CN104570239A - Single-fiber multidirection optical component - Google Patents

Abstract

The invention discloses a single-fiber multi-directional optical component, which comprises a casing with a light hole on one side, an optical interface component arranged outside the casing and aligned with the light hole, a base fixed in the casing, The laser receiving/sending device and the chip-side lens arranged on the base; the laser receiving/sending device is a detector chip and its auxiliary circuit or a laser chip and its auxiliary circuit, and the optical axis of the chip-side lens is in line with the Each of the laser receiving/transmitting devices is coaxially arranged, a light splitting element is arranged between the chip end lenses, and the optical hole is arranged coaxially with the optical interface part; the optical interface part includes a fiber end lens and a fiber sleeve barrel; the fiber end lens is located between one end of the fiber sleeve and the light hole of the casing; the light splitting element includes a light splitting channel and a filter set in the light splitting channel; the base is provided with an electrical interface. The invention has the advantages of high coupling efficiency, high sensitivity, convenient plugging and unplugging, multiple light guides and easy automatic manufacture.

Description

A single-fiber multi-directional optical component

technical field

The invention relates to a single-fiber multi-directional optical component, which belongs to the field of optical elements.

Background technique

According to the currently known component structure, the general optical component is to package the chip and the optical element coaxially, that is, the TO package (Transistor-Outline). Fix the TO package and the optical fiber together to make an optical component. The following disadvantages exist in this type of assembly:

(1) For the TO package of BK7 glass ball lens with a diameter of 1.5 mm, the laser beam emitted by the laser chip is coupled into the optical fiber, that is, emission coupling, and the coupling efficiency is low, generally less than 15%;

(2) The laser beam transmitted by the optical fiber is focused on the photosensitive surface of the detector chip, that is, receiving coupling, and the minimum spot diameter reaches 50 microns, which is very unfavorable for coupling;

(3) The structure of TO packaging is complex, the cost is high, the difficulty of automatic production is high, and the investment cost is also high;

(4) The position between the chip and the optical element is determined by the size of the TO tube base, TO tube cap, and substrate, and it is difficult to adjust in real time, resulting in a further decrease in coupling efficiency and an increase in the difficulty of the coupling process;

(5) The pin structure of the TO package makes it difficult for customers to use and automatic welding is difficult;

In addition, in existing products, optical components with only a single direction are far from meeting industrial needs. For example, optical components that only emit laser beams or only receive laser beams cannot meet the needs of multi-directional transmission and reception of laser beams. Great inconvenience.

Contents of the invention

The technical problem to be solved by the present invention is to provide a single-fiber multi-directional optical component with high coupling efficiency, high sensitivity, convenient plug-in, multiple light guides and easy automatic manufacture.

Technical scheme of the present invention is as follows:

A single-fiber multi-directional optical component, which includes a housing with a light hole on one side, an optical interface component arranged outside the housing and aligned with the light hole, a base fixed in the housing, and placed on the Laser receiving/transmitting device and chip-side lens on the base;

The laser receiving/sending device is a detector chip and its auxiliary circuit or a laser chip and its auxiliary circuit, and there are at least two laser receiving/sending devices; The laser chips correspond one by one, the chip-side lens is located in front of the photosensitive surface of the detector chip or the laser chip, and the optical axis of the chip-side lens corresponds to the photosensitive surface of the detector chip or the laser chip coaxially;

The optical axis of the chip-side lens is set coaxially with each of the laser receiving/transmitting devices, a light splitting element is arranged between the chip-side lenses, and the optical hole is set coaxially with the optical interface component;

The optical interface component includes an optical fiber end lens and an optical fiber sleeve; the optical fiber end lens is located between one end of the optical fiber sleeve and the light-through hole of the housing;

The light-splitting element includes a light-splitting channel and a filter arranged in the light-splitting channel; a channel opening is provided on the light-splitting channel, and the channel opening is respectively aligned with the optical axis and the light-through hole of each of the chip end lenses, The optical filter is placed obliquely to the channel opening, and its inclination angle is 45 degrees to the horizontal direction of the channel; the optical filter transmits or emits the laser beam of a specific wavelength as required;

The base includes a main base and a chip support base, the chip support base is welded or bonded on the main base; the laser receiving/transmitting device is sintered or bonded on the chip support base;

Each of the laser receiving/transmitting devices and its corresponding matching chip end lens form a group, and each group is separated by an electromagnetic shielding plate; the detector chip and its auxiliary circuit and its corresponding matching chip end lens form a group , forming a laser receiving cavity separated by electromagnetic shielding plates; the laser chip and its auxiliary circuit and its corresponding matching chip end lens group, separated by electromagnetic shielding plates to form a laser emitting cavity;

The base is also provided with an electrical interface, which is electrically connected to the laser receiving/transmitting device through bonding wires and via holes, and the electrical interface extends out of the housing to communicate with external electrical signals. The interface and the shell are airtightly sealed by sealant;

The receiving/emitting laser beam of the laser receiving/emitting device enters and exits through the light hole and the light splitting channel of the housing.

Further, the chip-side lens and the fiber-side lens are ball lenses, aspheric lenses, plano-convex lenses or cylindrical lenses.

Further, the main base and the chip support base are single-side/double-side metallized ceramic substrates, conventional PCB boards, aluminum-based PCB boards, copper-based PCB boards, or injection molded parts containing metal wiring.

Further, the power interface is arranged on the main base, and the power interface adopts wiring on the main base to form gold fingers or pin headers.

Further, the optical fiber sleeve is a pluggable optical fiber sleeve or a pigtail type optical fiber sleeve;

When the optical fiber sleeve is a pluggable optical fiber sleeve, the optical fiber sleeve includes a sleeve housing and a ferrule with a slit on the side; the ferrule is sleeved in the sleeve housing, so The outer wall on the opposite side of the slit on the ferrule barrel is welded to the inner wall of the sleeve shell; the jumper ferrule is used as an external connection and inserted into the ferrule barrel;

When the optical fiber sleeve is a pigtail type optical fiber sleeve, the optical fiber sleeve includes a rubber tail sleeve, a pigtail ferrule and a jumper ferrule; the jumper ferrule is welded in the pigtail ferrule , the outer casing of the pigtail ferrule is provided with a rubber tail sleeve.

Further, the optical interface component also includes a stop with a hole in the middle, and the optical fiber end lens, the stop and the optical fiber in the jumper ferrule are sequentially coaxial and seamlessly contacted.

Further, a single-fiber multi-directional optical component also includes a chip-end lens support seat and a fiber-end lens support seat; the chip-end lens support seat 2 and the fiber-end lens support seat are both provided with light-transmitting holes;

The chip-side lens is fixed in the chip-side lens support seat, and the chip-side lens is welded or bonded on the main base through the chip-side lens support seat, and the optical axis of the chip-side lens is connected to the chip-side lens support seat. The light-transmitting hole is coaxially corresponding; the photosensitive surface of the detector chip or the laser chip is corresponding to the optical axis of the chip end lens;

The fiber end lens is fixed in the fiber end lens support seat, and the fiber end lens is welded or bonded between one end of the fiber sleeve and the light passage hole of the housing through the fiber end lens support seat. The light hole, the light transmission hole on the fiber end lens support seat, and the optical axis of the fiber end lens are coaxially corresponding to the optical axis of the optical fiber in the jumper ferrule.

Further, the stopper is fixedly connected to the fiber end lens support seat, the fiber end lens support seat is a cylinder with a V-shaped groove at one end, and the fiber end lens passes through the V-shaped groove at one end of the fiber end lens support seat Tightly embedded therein, the fiber end lens is tightly fixed in the fiber end lens support seat through the stopper.

Further, the air-tight sealing is performed between the optical fiber end lens and the optical fiber end lens support seat through a sealant.

Further, the laser transmitting/receiving device is a photodiode such as a laser chip and a detector chip and its auxiliary circuit, and the auxiliary circuit is a conventional circuit.

Further, the receiving/sending laser beam of the laser receiving/sending device sequentially passes through the optical axis of the lens at the chip end, the light splitting channel, the light-through hole on the housing, the optical axis of the lens at the fiber end, and the hole in the middle of the block Access to the fiber in the jumper ferrule.

Further, the inner diameter of the ferrule barrel in a natural state is smaller than or equal to the diameter of the jumper ferrule.

Further, there is a crack on the side of the pigtail ferrule, the jumper ferrule is inserted into the pigtail ferrule, and the inner diameter of the pigtail ferrule in a natural state is less than or equal to the diameter of the jumper ferrule, The jumper ferrule in the pigtail ferrule barrel fixes the pigtail in the jumper ferrule through a sealant, and the pigtail is a form of optical fiber.

Further, the stopper is fixedly connected to the fiber end lens support seat, the fiber end lens is tightly fixed in the V-shaped groove of the fiber end lens support seat through the stopper, and the sealant is used to seal along the edge of the fiber end lens, In addition to the role of reinforcement, the outer edge of the contact between the V-groove and the fiber end lens is sealed to ensure that moisture or other dust cannot enter the housing through the light hole to contaminate or corrode the internal laser receiving/transmitting device, chip end lens and other components. device, resulting in inaccurate accuracy or shortened service life. In this application, the use of sealant for fixing and sealing is to achieve the above purpose and effect.

Further, the pluggable optical fiber sleeve also includes a sleeve ring, and the sleeve ring is sleeved outside the optical fiber end lens support seat, or sleeved outside the sleeve housing; or the sleeve ring is supported by the optical fiber end lens The seat is integrated, or the sleeve ring is integrated with the sleeve housing, and the sleeve ring is used to fix the optical interface in use.

Further, the stopper is located between the fiber end lens and the jumper ferrule; the thickness of the stopper determines the distance from the optical fiber in the jumper ferrule to the fiber end lens.

Further, the optical fiber is divided into APC type and UPC type. According to the type of optical fiber used, the shape of the corresponding block is also different, but as long as the hole in the center of the block is aligned with the center of the optical fiber.

Further, when the laser receiving/transmitting device is a laser chip, the laser receiving/transmitting device also includes a backlight detector, the backlight detector is sintered or bonded on the chip support base, and the chip support base Welded or bonded on the main base, the position of the backlight detector is based on the fact that its photosensitive surface can receive the light emitted by the laser chip and form an angle of about 8 to 15 degrees with the laser chip. After receiving the light from the laser chip, the photosensitive surface converts the light intensity signal into an electrical signal and feeds it back to the control device for controlling the light intensity. The control device sends a control signal to adjust the light intensity emitted by the laser chip.

Further, when the laser receiving/transmitting device is a detector chip, the laser receiving/transmitting device also includes a transimpedance amplifier chip and related filter capacitors, and the transimpedance amplifier chip and related filter capacitors are sintered or bonded on the chip On the support base, the chip support base is welded or glued on the main base, the detector chip converts the optical signal into an electrical signal, and the transimpedance amplifier chip amplifies the electrical signal before outputting it.

Further, according to the direction in which the pin headers protrude from the housing, it can be side pin headers, bottom pin headers, upper pin headers or other pin headers in different directions.

Further, the main base is covered with heat-conducting glue, which is beneficial to expand the heat dissipation area of each device inside the optical component and accelerate the heat dissipation speed.

Further, a sealant is laid on the side panels inside the housing for airtight packaging.

The beneficial effects of the present invention are:

(1) The present invention couples the laser light emitted by multiple laser chips into the same optical fiber by setting the light splitting element, or couples the laser light transmitted from the same optical fiber to multiple detector chips, or a mixture of the two; and According to the location and quantity of the laser receiving/transmitting devices, it can be used as a single-fiber bi-directional receiving and receiving light assembly or a single-fiber multi-directional receiving and receiving light assembly, which has a wide range of applications and is easy to use.

(2) The present invention isolates each laser transmitting/receiving device into a separate laser receiving cavity or laser emitting cavity through an electromagnetic shielding plate, so as to avoid mutual interference of generated electromagnetic signals and ensure accuracy and stability.

(3) In the present invention, an optical fiber end lens is added to the optical interface components to form secondary light concentration, which improves the degree of photopolymerization, and improves the efficiency of emission coupling and the sensitivity of reception coupling;

When the laser receiving/transmitting device is a laser chip and its auxiliary circuit, the minimum spot diameter of the launch coupling can be reduced, so that the cross-section of the optical fiber in the jumper ferrule is larger relative to the spot, and it is easier to accurately receive the launch coupling. The light spot reduces the requirements for the accuracy of its installation position in the fiber optic sleeve, thus simplifying the internal structure of the fiber sleeve and saving technical and time costs;

When the laser receiving/transmitting device is a detector chip and its auxiliary circuit, the minimum spot diameter for receiving coupling can be reduced, so that the photosensitive surface of the detector chip is larger relative to the spot, and it is easier to accurately receive the receiving coupling spot.

(4) The main base and the chip support base of the present invention have regular structures, which are easy to mount and bond on their planes, and solve the problem of low mounting and bonding efficiency caused by the difference in height and protrusion of the original TO socket. For the problem of poor clamping in the automated production process, the chip plane of the laser receiving/transmitting device is first mounted on the chip support base and bonded, and then the chip support base is welded or bonded on the main base , making the structure simple, easy to install, easy to automate production, and realize fully automated operation.

(5) The optical interface component of the present invention is provided with a stopper with a hole in the middle to ensure that the position of the jumper ferrule will not move forward, and the thickness of the stopper can accurately control the distance from the front end of the jumper ferrule to the lens at the fiber end.

(6) When the optical fiber sleeve used in the present invention is a plug-in optical fiber sleeve, cracks are opened on the side of the ferrule so that its cross section is C-shaped, and the elastic material has a certain elasticity so that its inner diameter can be adjusted. It is easy to put in the jumper ferrule, easy to assemble and replace the jumper ferrule, and the inner diameter of the ferrule barrel in the natural state is less than or equal to the diameter of the jumper ferrule, so that the jumper ferrule can be tightly fixed after being inserted into the ferrule barrel , and can maintain a certain insertion force;

When the optical fiber sleeve used in the present invention is a pigtail type optical fiber sleeve, it is integrally formed, and the laser transmitting/receiving device and the two types of optical fiber sleeves can be combined freely according to needs, and are suitable for various occasions.

(7) The present invention adopts a variety of electrical interfaces, such as gold fingers or pin headers, which have a wide range of applications and are easy to promote and use.

Description of drawings

Fig. 1 is a schematic structural diagram of Embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of Embodiment 2 of the present invention.

Fig. 3 is a cross-sectional view of the pluggable optical fiber sleeve in the present invention.

Fig. 4 is a cross-sectional view of a pigtailed fiber optic sleeve in the present invention.

Fig. 5 is a schematic diagram of the overall structure of the pluggable optical fiber sleeve in the present invention.

Fig. 6 is a schematic diagram of the positional relationship of the blocking platform in the present invention.

Fig. 7 is a schematic diagram of the internal structure of the laser emitting cavity in the present invention.

Among them, 1 shell, 2 main base, 3 chip support base, 4 power interface, 5 laser receiving/transmitting device, 6 optical hole, 7-1 chip end lens, 7-2 chip end lens support seat, 8 -1 fiber end lens, 8-2 fiber end lens support seat, 9 fiber optic sleeve, 9-1-1 sleeve shell, 9-1-2 ferrule barrel, 9-1-3 crack, 9-2- 1 rubber tail sleeve, 9-2-2 pigtail ferrule, 10 block, 11 optical filter, 12 light splitting channel, 13 electromagnetic shielding plate, 14 backlight detection chip, 15 sleeve ring, 16 V groove, 17 Jumper ferrule, 18 optical fiber, 19 sealant, 20 welding, 21 heat conduction glue.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

As shown in Figure 1 and Figures 3 to 7, Embodiment 1: it includes a housing 1, an optical interface component arranged on the housing 1, a main base 2 and a chip support base 3 fixed in the housing 1, The detector chip and its auxiliary circuit, the laser chip and its auxiliary circuit respectively arranged on the two chip supporting bases 3, and the two chip end lenses 7-1 correspondingly arranged on the main base 2; There is a light hole 6 on one side of the body 1, and the optical interface part is aligned with the light hole 6 on the housing 1; the chip support base 3 is welded or glued on the main base 2;

The two chip-side lenses 7-1 are respectively on the photosensitive surface of the detector chip and the front end of the laser chip, and the optical axes of the two chip-side lenses 7-1 are coaxially corresponding to the chip; A light-splitting element is provided between the chip end lenses 7-1; as shown in Figure 1, the light-splitting element includes a light-splitting channel 12 and two optical filters 11 arranged in the light-splitting channel 12; There are 3 channel openings, 2 of which are aligned with the optical axis of a chip-end lens 7-1, and the other channel opening is aligned with the light hole 6. There are two bends in the light splitting channel 12, and two The optical filter 11 is respectively located at two bends in the light splitting channel 12, and is placed obliquely in alignment with the two channel openings, and its inclination angle is 45 degrees with the light splitting channel 12; Laser transmission or emission;

In Fig. 1, the housing 1 is divided into two chambers by the electromagnetic shielding plate 13 in the middle, the laser receiving/transmitting device 5 in the upper chamber is a laser chip and its auxiliary circuit, and the laser receiving/transmitting device 5 in the lower chamber is The emitting device 5 is a detector chip and its auxiliary circuit; the laser chip emits light through the chip end lens 7-1 in its chamber and then passes through the optical filter 11, and is transmitted through the optical hole 6 through the optical filter 11 to emit , coupled into the optical fiber 18 of the jumper ferrule 17 in the fiber sleeve 9 through the optical fiber end lens 8-1; the laser light transmitted from the optical fiber 18 enters the optical fiber end lens 8-1 and then enters through the light hole 6 The spectroscopic element emits from the channel port after being reflected by two optical filters 11, and is coupled to the photosensitive surface of the detector chip through the chip end lens 7-1.

When the bending in the light-splitting channel 12 is at different angles, the inclination angle of the filter 11 should also be adjusted adaptively, so as to ensure that the light-splitting element can communicate the light in the two chambers with the light-through hole 6 respectively.

The optical interface component includes an optical fiber end lens 8-1 and an optical fiber sleeve 9; the optical fiber end lens 8-1 is located between one end of the optical fiber sleeve 9 and the optical hole 6 of the housing 1;

The laser chip and its auxiliary circuit and the chip end lens 7-1 on the front side form a group, the detector chip and its auxiliary circuit and the chip end lens 7-1 on the photosensitive front side form a group, two groups The electromagnetic shielding plates 13 are spaced between them, so a laser emitting cavity and a laser receiving cavity are formed.

The base is also provided with an electrical interface 4, which is electrically connected to the laser receiving/transmitting device 5 through bonding wires and via holes, and the electrical interface 4 extends out of the housing 1 to communicate with external electrical signals , the airtight seal between the power interface 4 and the housing 1 is performed by a sealant 19;

The receiving/emitting laser beam of the laser receiving/emitting device 5 enters and exits through the light hole 6 of the housing 1 .

Further, the chip-end lens 7-1 and the fiber-end lens 8-1 are ball lenses, aspheric lenses, plano-convex lenses or cylindrical lenses.

Further, the main base 2 and the chip supporting base 3 are single-side/double-side metallized ceramic substrates, conventional PCB boards, aluminum-based PCB boards, copper-based PCB boards, or injection molded parts containing metal wiring.

Further, the power supply interface 4 is arranged on the main base 2, and the power supply interface 4 adopts wiring on the main base 2 to form golden fingers or pin headers.

Further, the optical fiber sleeve 9 is a pluggable optical fiber sleeve or a pigtailed optical fiber sleeve;

When the optical fiber sleeve 9 is a pluggable optical fiber sleeve, the optical fiber sleeve 9 includes a sleeve housing 9-1-1 and a ferrule 9-1-1 with a crack 9-1-3 on the side 2. The ferrule barrel 9-1-2 is set inside the sleeve shell 9-1-1, and the outer wall on the opposite side of the crack 9-1-3 on the ferrule barrel 9-1-2 and the sleeve The inner wall of the shell 9-1-1 is welded to form a welding place 20; the jumper ferrule 17 is used as an external connection, and is inserted in the ferrule barrel 9-1-2;

When the optical fiber sleeve 9 is a pigtailed optical fiber sleeve, the optical fiber sleeve 9 includes a rubber tail sleeve 9-2-1, a pigtail ferrule 9-2-2 and a jumper ferrule 17; The jumper ferrule 17 is welded in the pigtail ferrule 9-2-2, and the pigtail ferrule 9-2-2 is covered with a rubber tail sleeve 9-2-1.

Further, the optical interface component also includes a blocking platform 10 with a hole in the middle, and the optical fiber end lens 8-1, the blocking platform 10 and the optical fiber 18 in the jumper ferrule 17 are sequentially in coaxial and seamless contact .

Further, a single-fiber multi-directional optical component also includes a chip end lens support seat 7-2 and a fiber end lens support seat 8-2; the chip end lens support seat 7-2 and the fiber end lens support seat 8-2 There are light-transmitting holes on them;

The chip-side lens 7-1 is fixed in the chip-side lens support seat 7-2, and the chip-side lens 7-1 is welded or bonded to the main base 2 through the chip-side lens support seat 7-2. The optical axis of the chip-side lens 7-1 corresponds coaxially to the light transmission hole on the chip-side lens support seat 7-2; the photosensitive surface of the detector chip or the laser chip corresponds to the optical axis of the chip-side lens 7-1;

The fiber end lens 8-1 is fixed in the fiber end lens support seat 8-2, and the fiber end lens 8-1 is welded or bonded to one end of the fiber optic sleeve 9 and the housing through the fiber end lens support seat 8-2 Between the light hole 6 of 1, the light hole 6 of the housing 1, the light hole 8-2 on the fiber end lens support seat, the optical axis of the fiber end lens 8-1 and the jumper ferrule 17 The optical axes of the optical fibers 18 correspond coaxially.

Further, the stopper 10 is fixedly connected to the fiber end lens support seat 8-2, the fiber end lens support seat 8-2 is a cylinder with a V-shaped groove 16 at one end, and the fiber end lens 8-1 The V-groove 16 at one end of the fiber end lens support seat 8 - 2 is tightly embedded therein, and the fiber end lens 8 - 1 is tightly fixed in the fiber end lens support seat 8 - 2 through the stopper 10 .

Further, the airtight seal between the optical fiber end lens 8 - 1 and the optical fiber end lens support seat 8 - 2 is performed by a sealant 19 .

Further, the laser transmitting/receiving device 5 is a photodiode such as a laser chip and a detector chip and its auxiliary circuit, and the auxiliary circuit is a conventional circuit.

Further, the receiving/sending laser beams of the laser receiving/sending device 5 sequentially pass through the optical axis of the chip end lens 7-1, the light splitting channel, the optical hole 6 on the housing 1, and the fiber end lens 7-1. The optical axis of the optical axis, the hole in the middle of the blocking platform 10 and the optical fiber 18 in the jumper ferrule 17 come in and out.

Further, the inner diameter of the ferrule barrel 9 - 1 - 2 in a natural state is smaller than or equal to the diameter of the jumper ferrule 17 .

Further, there is a slit 9-1-3 on the side of the pigtail ferrule 9-2-2, the jumper ferrule 17 is inserted into the pigtail ferrule 9-2-2, and the pigtail ferrule The inner diameter of the core barrel 9-2-2 in a natural state is less than or equal to the diameter of the jumper ferrule 17, and the jumper ferrule 17 in the pigtail ferrule 9-2-2 is fixed by a sealant 19 In the jumper ferrule 17 , the pigtail is a form of optical fiber 18 .

Further, the block 10 is fixedly connected to the fiber end lens support seat 8-2, and the fiber end lens 8-1 is tightly fixed in the V-shaped groove 16 of the fiber end lens support seat 8-2 through the block block 10 , through the sealant 19 to seal along the edge of the fiber end lens 8-1, in addition to the role of reinforcement, the V-shaped groove 16 is sealed with the outer edge of the fiber end lens 8-1 to ensure that moisture or other dust cannot pass through the light hole 6 If it enters the housing 1, it will pollute or corrode the laser receiving/transmitting device 5, the chip-side lens 7-1 and other components, resulting in misalignment of precision or shortened service life. In this application, the use of sealant 19 for fixing and sealing is to achieve the above purpose and effect.

Further, the pluggable optical fiber sleeve 9 also includes a sleeve ring 15, and the sleeve ring 15 is sleeved outside the optical fiber end lens support seat 8-2, or sleeved on the sleeve housing 9-1- 1 outside; or the sleeve ring 15 is made into one with the fiber end lens support seat 8-2, or the sleeve ring 15 is made into one with the sleeve housing 9-1-1, and the sleeve ring 15 is used for Fixed optical interface.

Further, the stopper 10 is located between the fiber end lens 8-1 and the jumper ferrule 17; the thickness of the stopper 10 determines the distance from the optical fiber 18 in the jumper ferrule 17 to the fiber end lens 8-1.

Further, the optical fiber 18 is divided into APC type and UPC type. According to different types of optical fiber 18 used, the shape of the corresponding block 10 is also different, but as long as the hole in the center of the block 10 is aligned with the center of the optical fiber 18.

Further, when the laser receiving/sending device 5 is a laser chip and its auxiliary circuit, the laser receiving/sending device 5 also includes a backlight detector 14, and the backlight detector 14 is sintered or bonded on the chip support base 3, the chip support base 3 is welded or bonded on the main base 2, the position of the backlight detector 14 can receive the light emitted by the laser chip with its photosensitive surface and the distance between the laser chip and the laser chip is about 8 to 15. The photosensitive surface of the backlight detector 14 receives the light emitted by the laser chip and converts the light intensity signal into an electrical signal and then feeds it back to the control device for controlling the light intensity. The control device sends a control signal to adjust the laser chip. The emitted light intensity.

Further, when the laser receiving/sending device 5 is a detector chip and its auxiliary circuit, the laser receiving/sending device also includes a transimpedance amplifier chip and related filter capacitors, and the transimpedance amplifier chip and related filter capacitors are sintered Or bonded on the chip support base 3, the chip support base 3 is welded or bonded on the main base 2, and the detector chip converts the optical signal into an electrical signal by the transimpedance amplifier chip to the electrical signal. The signal is amplified and output.

Further, according to the direction in which the pin headers protrude from the housing, it can be side pin headers, bottom pin headers, upper pin headers or other pin headers in different directions.

Further, the main base 2 is covered with thermally conductive glue 21, which is beneficial to expand the heat dissipation area of each device inside the optical component and accelerate the heat dissipation speed.

Further, a sealant 19 is laid on the side panels inside the housing 1 for airtight packaging.

As shown in Figures 2 to 7, Embodiment 2 includes a housing 1, an optical interface component disposed on the housing 1, a main base 2 fixed in the housing 1, and N chip support bases 3; The chip supporting base 3 is welded or bonded on the main base 2; N is greater than 2.

Each chip support base 3 is respectively provided with a laser receiving/sending device 5, referring to Fig. 2, the laser receiving/sending device 5 welded or bonded on the chip support base 3 can be a detector chip and its auxiliary circuit, It can also be a laser chip and its auxiliary circuit. Each detector chip and the laser chip are matched with a chip-side lens 7-1. One side of the housing 1 has an optical hole 6. Embodiment 2 also includes an optical interface component. , the optical interface component is aligned with the light hole 6 on the casing 1 .

As shown in Figure 2, each laser receiving/transmitting device 5 and its front matching chip-end lens 7-1 form a group, and each group is separated into independent small cavities by an electromagnetic shielding plate 13 to avoid internal laser The mutual interference and loss of light beams are beneficial to improve the accuracy, and also reduce the interference of external light.

The chip-side lens 7-1 is respectively at the front end of the photosensitive surface of each detector chip and laser chip, and the optical axis of each chip-side lens 7-1 is coaxially corresponding to the photosensitive surface; each chip-side lens 7-1 A light-splitting element is provided between them; as shown in Figure 2, the light-splitting element includes a light-splitting channel 12 and a plurality of filters 11 arranged in the light-splitting channel 12; the light-splitting channel 12 is provided with a channel corresponding to the light filter 11 mouth, wherein each channel mouth is aligned with the optical axis of a chip end lens 7-1, and another channel mouth is aligned with the light-through hole 66, and the number of the optical filter 11 is the same as the light beam that needs to be separated in the light splitting channel 12 If the quantity matches, splitting the light beam is equivalent to reflecting the light beam. The optical filters 11 are respectively located in the light splitting channel 12 where light splitting is required, and are placed obliquely at each channel opening. The inclination angle is 45 degrees to the light splitting channel 12. ; The filter 11 transmits or emits laser light of a specific wavelength;

In Fig. 2, housing 1 is separated into each chamber by electromagnetic shielding plate 13 in the middle, and the laser sending/receiving device 5 in each chamber has laser chip and auxiliary circuit thereof, and what have is detector chip and its auxiliary circuit.

The working process of this embodiment is as follows:

After the laser chip emits light through the chip end lens 7-1 in its chamber, it is transmitted or emitted through the optical filter 11 and emitted through the light hole 6, and then coupled into the optical fiber sleeve 9 through the fiber end lens 8-1 to jumper In the optical fiber 18 of the ferrule 17; the laser light transmitted from the optical fiber 18 enters the optical fiber end lens 8-1 and then enters the spectroscopic element through the optical hole 6, and is transmitted or reflected by the corresponding optical filter 11 and then passes through the channel port. The output is coupled to the photosensitive surface of the corresponding detector chip through the chip-side lens 7-1.

When the bends in the light-splitting channel 12 are at different angles, the inclination angle of the filter 11 should also be adjusted adaptively, so as to ensure that the light-splitting element can communicate the laser beams in each chamber with the light-through hole 6 respectively.

The optical interface component includes an optical fiber end lens 8-1 and an optical fiber sleeve 9; the optical fiber end lens 8-1 is located between one end of the optical fiber sleeve 9 and the optical hole 6 of the housing 1;

The laser chip and its auxiliary circuit and the chip end lens 7-1 on the front side form a group, the detector chip and its auxiliary circuit and the chip end lens 7-1 on the photosensitive front side form a group, two groups The electromagnetic shielding plates 13 are spaced between them, so a laser emitting cavity and a laser receiving cavity are formed.

The base is also provided with an electrical interface 4, which is electrically connected to the laser receiving/transmitting device 5 through bonding wires and via holes, and the electrical interface 4 extends out of the housing 1 to communicate with external electrical signals , the airtight seal between the power interface 4 and the housing 1 is performed by a sealant 19;

The receiving/emitting laser beam of the laser receiving/emitting device 5 enters and exits through the light hole 6 of the housing 1 .

Other features of Embodiment 2 are the same as Embodiment 1 except for the above-mentioned features.

The present invention has a simple and regular structure, adopts planar patching and bonding, and welds or bonds the chip support base on the main base according to the arrangement of the laser receiving/transmitting device 5. The shape is regular, easy to clamp, and can be used Conventional SMT equipment and bonding equipment can be completed without special customized equipment, which improves the efficiency of production and SMT packaging, and greatly reduces the labor cost and time cost of making the present invention.

The invention arranges two light-gathering elements, increases the light-gathering effect, improves the emission coupling efficiency and the sensitivity of the receiving coupling, has a simple structure, and is beneficial to automatic operation; adopts a plug-in electrical interface, and is convenient to use.

The implementation manners described above are only preferred embodiments of the present invention, rather than an exhaustive list of feasible implementations of the present invention. For those skilled in the art, any obvious changes made without departing from the principle and spirit of the present invention should be considered to be included in the protection scope of the claims of the present invention.

Claims (10)

1. the multidirectional optical assembly of single fiber, is characterized in that: it comprises side with the housing (1) of light hole (6), the pedestal be fixed in described housing (1), at least 2 the laser receiving/transmitting devices (5) be arranged on described pedestal, the die terminals lens (7-1), beam splitter described die terminals lens (7-1) between and with described light hole (6) the coaxial optical interface parts that arrange that arrange coaxial with each described laser receiving/transmitting device (5);

Described optical interface parts comprise optical fiber end lens (8-1) and optical fiber sleeve (9); Described optical fiber end lens (8-1) are positioned between the light hole (6) of optical fiber sleeve (9) one end and housing (1);

Described beam splitter comprises a point optical channel (12) and is arranged on the optical filter (11) in a point optical channel (12);

Described laser receiving/transmitting device (5) is detector chip and auxiliary circuit thereof or chip of laser and auxiliary circuit thereof, and described laser receiving/transmitting device (5) sinters or be bonded on described pedestal;

Each described laser receiving/transmitting device (5) forms one group with the die terminals lens (7-1) of its Corresponding matching, often spaced apart by electromagnetic shielding plate (13) between group;

Described pedestal is also provided with energising interface (4), described energising interface (4) is stretched out housing (1) and is communicated with extraneous electric signal.

2. the multidirectional optical assembly of a kind of single fiber according to claim 1, is characterized in that: described pedestal comprises main basal base (2) and die support pad (3), and described die support pad (3) is arranged on main basal base (2); Described laser receiving/transmitting device (5) is arranged on die support pad (3).

3. a kind of optical assembly for optical-fibre communications according to claim 2, is characterized in that: the ceramic substrate that described main basal base (2) and die support pad (3) are one-sided metallic, the ceramic substrate of two-sided metallization, conventional pcb board, aluminum base PCB plate, copper base pcb board or include the moulding of metal line.

4. the multidirectional optical assembly of a kind of single fiber according to claim 2, is characterized in that: described energising interface (4) is arranged on described main basal base (2), and described energising interface (4) adopts and generates golden finger or row's pin in the upper wiring of main basal base (2).

5. the multidirectional optical assembly of a kind of single fiber according to claim 1, is characterized in that: described optical fiber sleeve (9) is plug-in optical fiber sleeve or tail-fiber type optical fiber sleeve;

Described plug-in optical fiber sleeve comprises cover cylinder shell (9-1-1) and side has the lock pin cylinder (9-1-2) in crack (9-1-3); Be enclosed within described lock pin cylinder (9-1-2) in sleeve housing (9-1-1), the outer wall of upper crack (9-1-3) offside of described lock pin cylinder (9-1-2) welds with cover cylinder shell (9-1-1) inwall, is inserted in lock pin cylinder (9-1-2) in external wire jumper lock pin (17);

Described tail-fiber type optical fiber sleeve comprises tail gum cover (9-2-1), tail optical fiber lock pin cylinder (9-2-2) and wire jumper lock pin (17); Described wire jumper lock pin (17) is welded in tail optical fiber lock pin cylinder (9-2-2), is arranged with tail gum cover (9-2-1) outside described tail optical fiber lock pin cylinder (9-2-2).

6. the multidirectional optical assembly of a kind of single fiber according to claim 1, it is characterized in that: described optical interface parts also comprise the gear platform (10) of middle with hole, coaxial seamless contact successively between optical fiber (18) three in described optical fiber end lens (8-1), gear platform (10) and wire jumper lock pin (17).

7. the multidirectional optical assembly of a kind of single fiber according to claim 1 or 6, is characterized in that: it also comprises die terminals lens supports seat (7-2) and optical fiber end lens supports seat (8-2); Described die terminals lens supports seat (7-2) and optical fiber end lens supports seat (8-2) are equipped with light hole;

Described die terminals lens (7-1) are fixed in die terminals lens supports seat (7-2), described die terminals lens (7-1) weld or are bonded on main basal base (2) by die terminals lens supports seat (7-2), and the optical axis of described die terminals lens (7-1) is coaxially corresponding with the light hole on die terminals lens supports seat (7-2); The photosurface of described detector chip or chip of laser corresponding with the optical axis of die terminals lens (7-1);

Described optical fiber end lens (8-1) are fixed in optical fiber end lens supports seat (8-2), described optical fiber end lens (8-1) weld or are bonded between the light hole (6) of optical fiber sleeve (7) one end and housing (1) by optical fiber end lens supports seat (8-2), and the light hole on the light hole (6) of described housing (1), optical fiber end lens supports seat (8-2), the optical axis of optical fiber end lens (8-1) are corresponding with the light shaft coaxle in wire jumper lock pin (14).

8. the multidirectional optical assembly of a kind of single fiber according to claim 7, it is characterized in that: described optical fiber end lens supports seat (8-2) is provided with the cylindrical shell of V-type groove (16) for one end, and described optical fiber end lens (8-1) are closely embedded in wherein by the V-type groove (16) of optical fiber end lens supports seat (8-2) one end.

9. the multidirectional optical assembly of a kind of single fiber according to claim 1, it is characterized in that: point optical channel (12) in described beam splitter is provided with passway, described passway aims at optical axis and the light hole (6) of each described die terminals lens (7-1) respectively, described optical filter (11) aligned with channel mouth slant setting.

10. the multidirectional optical assembly of a kind of single fiber according to claim 1, is characterized in that: described die terminals lens (7-1) and optical fiber end lens (8-1) are globe lens, non-globe lens, plano-convex lens or lens pillar.