JPH11202165A - Optical module - Google Patents

Abstract

(57) Abstract: An optical module having a configuration in which a coupling structure between a light emitting element and a light guide member can be stably manufactured with a small amount of labor in an attaching process. An optical module includes a first support member and a second support member. The first support member 101 includes a portion where the semiconductor laser 102 is installed and fixed, a portion where the first lens 103 is provided, and a first lens 1.
And a light deflecting unit 105 provided with a deflecting unit for deflecting at least a part of the light transmitted through the third support member 201 in the direction of the second support member 201. And a light guide unit 202 for guiding the light through the second lens 203 and inputting the light to the optical fiber 206 attached to the output end.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical module and a method of manufacturing the same, and more particularly, to a surface-emitting type package that can be easily assembled and a method of manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, in optical communication, an optical module in which an optical waveguide element such as a light source, a receiver, and an optical amplifier is optically coupled to an optical fiber as an information transmission medium is often used. In such an optical module,
It is important that the coupling between the optical waveguide and the optical fiber is performed efficiently and that the optical fiber is formed so that there is little change with time. There are various methods for coupling an optical waveguide element and an optical fiber that have been conventionally used. One of the methods is a method in which output light of a semiconductor laser is made incident on an optical fiber by optical coupling using two lenses. What is important in manufacturing a laser module using such a method is how to adjust the positional relationship between the semiconductor laser and the optical fiber so as to reduce the number of adjustment points and stably adjust the position to the optimum position.

[0003]

However, in the conventional method used to couple the output light of the semiconductor laser to the optical fiber, many optical coupling elements are strictly placed on the optical axis of the output light of the semiconductor laser. There is a drawback that they have to be juxtaposed and require a very laborious mounting process, and there is a need for a method that can be stably mass-produced.

Accordingly, an object of the first invention relating to the present application is to stably fabricate a coupling structure between a light emitting element such as a semiconductor laser and an optical guide member such as an optical fiber with a small amount of labor in a mounting step. A means for deflecting the optical axis of the light (typically in a vertical direction) after the first lens, thereby facilitating attachment of optical components such as an optical element, a second lens and an optical fiber. To provide modules.

A second object of the present invention is to provide a method of manufacturing the above optical module.

[0006]

An optical module according to the present invention to achieve the above object is an optical module comprising a first supporting member and a second supporting member, wherein the first supporting member is A portion where the light emitting element such as a semiconductor laser is installed / fixed, a portion where the first lens is provided, and at least a part of the light transmitted from the light emitting element through the first lens is directed in the direction of the second support member (typically Has a light deflecting unit provided with a deflecting unit for deflecting light in the vertical direction), and the second support member guides light from the light deflecting unit via a second lens provided in the light guiding unit. It is characterized by having a light guide section for inputting to a light guide member such as an optical fiber attached to an output end of the light guide section. According to this configuration, since the optical axis of the light is deflected to the upper side of the second support member after the first lens, it is easy to attach optical components such as the optical element, the second lens, and the optical fiber by using gravity. become.

[0007] More specifically, the following configuration is possible. If the second support member has a portion for fixing the first lens, light from the light emitting element is collimated by the first lens during the operation of joining and joining the first support member and the second support member to the second lens. It can be easily adjusted to guide it into the light guide of the support member. The first lens may be fixed to a V-groove formed in the first support member. In this case, the position of the first support member is adjusted along the V groove so that the light from the light emitting element is collimated by the first lens and guided into the light guide portion of the second support member, and then fixed to the V groove. I do. With this configuration, it becomes easy to install an optical functional element or the like in the V-groove behind the first lens. Thus, light from a light emitting element such as a semiconductor laser can be easily coupled to a light guide member such as an optical fiber.

[0008] At least one optical functional element (such as an optical isolator) may be provided in an optical path between the first lens and the second lens. Since this optical path is bent, the optical functional element can be taken in and installed compactly without making the outer shape of the optical module too long.

Further, the first support member and the second support member are joined together by joining the joining planes, and the optical path emitted from the light emitting element and reaching the light deflecting section via the first lens extends parallel to the joining plane. The light deflecting unit can deflect the light path in a direction substantially perpendicular to the bonding plane. Further, if the light guide portion of the second support member is formed as an opening extending in a direction substantially perpendicular to the joint plane, it is possible to securely and easily fit and fix the second lens in the opening using gravity. It is performed. This mode is a typical example of the optical module of the present invention, and is a mode in which the effects of the present invention are surely exhibited.

If the first support member is formed from silicon,
The heat radiation characteristics of a light emitting element such as a semiconductor laser can be further improved.

Further, in an optical module including a light emitting element and a lens coupling element for coupling light from the light emitting element to a light guide member, a second supporting member provided with the light emitting element and a second member provided with the light guide member are provided. The support member is joined and joined, and a first lens for collimating light from the light emitting element is provided between the first support member and the second support member in the vicinity of the light emitting element surface that emits the light, The first support member includes a deflecting unit that directs at least a part of light from the light emitting element toward the second support member, which is substantially perpendicular to an optical path connecting the light emitting element and the first lens, to an output side of the first lens. The second support member may be configured to couple the substantially vertically upward light to the light guide member via a second lens provided in an opening extending substantially vertically. . In this configuration, a semiconductor optical module including a semiconductor laser as a light emitting element as an optical transmitter and a lens coupling element provided to couple the semiconductor laser light to an optical fiber as an optical guide member is provided. A semiconductor laser is provided on a first support member of the module, and a first lens is provided near a resonator surface that emits laser light to collimate the semiconductor laser light, and a first lens is provided on a side surface adjacent to an emission side of the first lens. ,
Deflecting means for directing at least a part of the laser light upward substantially perpendicularly to the upper surface of the first support member, and deflecting the light via an optical function element provided on the second support member and a second lens Can be combined with These modes are also typical examples of the optical module of the present invention, and are modes that reliably achieve the effects of the present invention.

If a 45 ° mirror surface for directing light in the vertical direction is used as the deflecting means, the optical axes of the optical functional elements after the first lens can be more reliably aligned in the direction of gravity. If the mirror surface is made of a metal material and the reflectance when light is incident on the mirror surface at 45 degrees is approximately 100%, the light can be efficiently directed in the vertical direction.

Further, the semiconductor laser chip, which is a light emitting element provided on the first support member, is a polarization modulation laser having a characteristic of changing the polarization depending on the current to be injected, and the polarized light beam is adjacent to the emission side of the first lens. A splitter is provided as a deflecting means, and the polarized light of the laser light directs the laser light upward substantially perpendicularly to the upper surface of the first support member by the polarization beam splitter, and a second lens provided on the second support member Can be coupled to the optical fiber via the optical fiber. In this configuration, a polarization-modulated semiconductor laser is applied, and a polarization selecting unit is used as a unit for directing the laser light in the vertical direction. In this configuration, the polarization beam splitter uses the other polarization of the polarization-modulated laser by installing a photodetector immediately after emission of the polarization beam splitter in order to receive laser light having a polarization that is not vertically directed by the polarization beam splitter. Output light intensity can be monitored, and feedback can be given to the intensity of light propagating in the optical fiber. In this way, the unnecessary polarization component of the light source can be removed from the light to the optical fiber by the polarization state of the laser light, and the intensity of the signal light can be adjusted by receiving the unnecessary polarization component at the same time. Become.

According to a second aspect of the present invention, there is provided a method for manufacturing an optical module, comprising the steps of: Joining the first support member on which the light emitting element is installed to the second support member so as to guide the second lens to the light guide portion of the second support member; A light guide member is provided at the output end of the light guide portion of the member, and light from the second lens is coupled thereto.
It is characterized by having an installation process. In this manufacturing method, a first lens that converts light from the light emitting element into parallel light may be fixed to the second support member.

Further, the first support member on which the light emitting element is installed is joined to the second support member so that the light from the light emitting element becomes parallel light and is guided to the light guide portion of the second support member. In the process, the first lens is installed in the groove of the first support member so that the light from the light emitting element becomes parallel light, and then the first support member is joined to the second support member, or the first support member is joined. Are joined together with the second support member, and then the first light in the groove of the first support member is changed so that the light from the light emitting element becomes parallel light.
It is possible to adjust the installation position of the lens.

According to these manufacturing methods, a coupling structure of a light emitting element such as a semiconductor laser and a light guide member such as an optical fiber can be stably manufactured with less labor in an attaching process.

[0017]

DETAILED DESCRIPTION OF THE INVENTION First Embodiment FIG. 1, a cross-sectional view of a laser module of the first embodiment (FIG. 2
AA ′ section of FIG. The laser module includes a first support member 101 and a second support member 201 in the form of a block. The first support member 101 has excellent heat conduction that can be used as a heat sink for a semiconductor laser such as single crystal silicon. It is desirable to form with a member.

FIG. 2 is a plan view of the first support member 101. FIG. An electrode pad 110 for mounting the semiconductor laser 102 and a semiconductor laser 102 are mounted on the first support member 101.
And a printed wiring terminal 111 for connecting an external electrode and an electrode terminal 112 outside the module.
Further, continuously with the concave portion where the semiconductor laser 102 is installed,
A groove 113 for adjusting the position of the first lens 103 as a ball lens and a 45 ° mirror surface 105 are formed. or,
The second support member 201 has a lens fixing groove 210 for fixing the first lens 103 for collimating the laser beam from the semiconductor laser 102 with an appropriate adhesive 210a, and a second lens 203 as a rod lens. An opening 202 for fixing and a fiber holder 205 for fixing the optical fiber 206 are provided.

The assembly of the laser module of the present embodiment is as follows.
First, the semiconductor laser 102 is applied to the electrode pad 110 on the first support member 101 shown in FIG.
Die bonding with solder such as n. In order to align the optical axes, the cavity direction of the semiconductor laser 102 and the center mark 107 of the electrode pad 110 are aligned at the time of die bonding. Further, laser driving is enabled by wire bonding the upper electrodes of the semiconductor laser 102 and the electrode terminals 111. Next, the semiconductor laser 10
After the installation of the second support member 201, in order to collimate (collimate) the laser light emitted from the semiconductor laser 102, as shown in FIG.
Put on top. Thereby, the first lens 103 fixed in the fixing groove 210 of the second support member 201 is set in the groove 113 of the first support member 101, and the laser beam is made parallel. At this time, the laser light emitted from the semiconductor laser 102 is collimated parallel to the joint plane between the first support member 101 and the second support member 201, and the opening 202 is formed to extend perpendicular to the joint plane. Have been.

The first lens 103 used in this embodiment is a ball lens made of TaF ₃ having a diameter of 0.8 mm. When this ball lens is used, the emission end face of the semiconductor laser 102 and the surface of the first lens 103 are Is about 20 μm. The center of the first lens 103 fixed to the second support member 201 is aligned with the center of the optical axis of the semiconductor laser 102 die-bonded to the first support member 101. Regarding the method of aligning the optical axis, the height of the light emitting portion of the semiconductor laser 102 can be easily set from the manufacturing process, so that it is easy to align the height of the laser light emitting portion with the center of the first lens 103.

In this state, the laser light emitted from the semiconductor laser 102 passes through the first lens 103 and is turned off by 45 °.
The light is reflected by the mirror 105 and passes through an opening 202 formed perpendicular to the second support member 201. At this time, the spot diameter of the laser beam is observed from the upper surface of the opening 202 using a vidicon or the like, and the second support member 201 is positioned in the XY plane (FIG.
(In the plane of the drawing) to make the laser light transmitted through the first lens 103 parallel. In this fine adjustment stage, the center position of the laser beam reflected by the 45 ° mirror 105 is shifted from the center of the opening 202 because the first lens 103 and the opening 202 are integrated into the second support member 201. May be slightly shifted, but this is not a problem.

45 formed on the first support member 101
The material of the mirror 105 is desirably a metal coat made of a material that is totally reflected when the mirror 105 enters the mirror at a wavelength of 45 ° at the wavelength of the laser light of the semiconductor laser 102 bonded to the die. The beam diameter of the laser beam collimated in this way does not exceed the diameter of the ball lens 103. When the parallelization of the laser light is confirmed by the vidicon on the upper surface of the opening 202, the oscillation of the semiconductor laser 102 is stopped, and the periphery of the joint surface between the first support member 101 and the second support member 201 is welded by laser welding or the like. To fix both.

Next, a second lens 203 is inserted into the opening 202 in order to couple the laser beam collimated in this manner with the optical fiber 206. Here, the second lens 203
Used a rod lens. The opening diameter of the opening 202 is slightly smaller than the diameter of the second lens 203 on the joint surface side with the first support member 101 so that the second lens 203 does not fall on the first support member 101, and The aperture diameter is set to a size that does not cause the laser beam collimated by one lens 103 to be eccentric. In order to fix the second lens 203, a second lens holder 204 is inserted from above the opening 202, and the second lens holder 204 is brought into contact with the second lens 203 so that the second lens 203 is fixed.
03 is fixed. In this step, since the work is performed in the posture shown in FIG. 1, the optical axis is set at an appropriate position simply by dropping the second lens 203 into the opening 202 by using gravity, and the work is extremely simple. Become. Needless to say, the working posture of the completed optical module is not limited to the posture shown in FIG. 1, and any posture can be used.

As the fixing method, there are a method of fitting the second lens holder 204 and the opening 202, and a method of fixing the opening 2
There is also a method in which a tap is formed only on the upper part of the second lens holder 02, and the outside of the second lens holder 204 is formed into a screw structure so that the two are engaged with each other and fixed. At this time, the second lens holder 20
4 is a length that does not protrude from the upper surface of the second support member 201.

Here, the semiconductor laser 102 is again oscillated, and the fiber holder 205 arranged on the opening 202 of the second support member 201 is adjusted in the XY plane to couple the laser beam to the optical fiber 206. That is, adjustment is performed while measuring the coupling efficiency, and the fiber holder 205 is fixed to the second support member 201 at a position of about -2 dB by laser welding or the like. Further, the optical fiber 206 is finely adjusted in the Z-axis direction (vertical direction in FIG. 1) and fixed to the fiber holder 205 by laser welding or the like.

By assembling in this manner (ie, first, the positions of the first support member 101 and the second support member 201 are adjusted to obtain parallel light, and then the positions of the fiber holder 205 and the optical fiber 206 are changed. A large number of optical coupling elements can be easily assembled on the optical axis of the semiconductor laser 102, and mass production can be stably performed.

Second Embodiment FIG. 3 shows the configuration of a second embodiment of the present invention. This embodiment is basically the same as the first embodiment, and the same members are given the same numbers. The difference from the first embodiment is
An optical isolator 301 is provided as a measure against returning light to the semiconductor laser 102. The oscillation mode of the semiconductor laser 102 used in the present embodiment is a TE mode. For this purpose, it is necessary to rotate the optical isolator 301 around an axis to adjust the incident direction and reduce the insertion loss.

In this embodiment, the opening 4 has the same diameter up to the lower part.
The rotation of the optical isolator 301 and the fixing of the optical isolator 301 and the second lens 203 are performed by using the second lens holder 401 placed in the second lens holder 401. That is, FIG.
As shown in (2), after inserting the optical isolator 301 into the second lens holder 401, the rod lens 203 having the same outer diameter as the optical isolator 301 is inserted, and the second lens holder 403 is further inserted and fitted. Optical isolator 3
01 and the second lens 203 are fixed. The second lens retainer 403 may have a screw structure as described in the first embodiment. Thus, the second lens holder 401
Is inserted into the opening 402 of the second support member 201 to finely adjust the rotation direction to minimize the return light, and then the second lens holder holder 404 is inserted and fitted into the second lens holder 401. Optical isolator 301 and second lens 20
3 is fixed. As a fixing method of the second lens holder 401, a screw is set up on the outside of the holder and a screw is also set up on the opening 402 of the second support member 201, so that the second lens holder 401 is rotated and inserted at an appropriate position. May be fixed with an adhesive such as a screw lock. After the fixing, the fiber holder 205 and the optical fiber 206 are fixed to the second support member 201 by laser welding or the like as in the first embodiment.

As described above, since the optical isolator 301 can be inserted vertically, it is easy to align the optical axis, and the insertion loss can be reduced to 0.1 to 0.2 dB. Further, by inserting the optical isolator in two stages, it is possible to reduce the return light to about 60 to 70 dB. Other points are the same as the first embodiment.

Third Embodiment FIG. 5 shows the configuration of a third embodiment of the present invention. This embodiment is also basically the same as the first embodiment, and the same members are given the same numbers. The difference from the first embodiment is
The first lens is not a ball lens but a rod lens 501
Is used to make parallel light (collimated light). When the rod lens 501 is used as the first lens, a V-groove 510 for fixing the lens on the optical axis of the first support member 101 is formed, and the rod lens 501 is disposed in the V-groove 510, 501 to V-groove 510
The laser light is collimated by sliding along.
In this case, the rod lens 501 is fixed to the second support member 201, and the second support member 201 is put on the first support member 101 to slide the rod lens 501 along the V-shaped groove 510, V-groove 5 of 1 support member 101
In a state where the rod lens 501 is disposed on the first support member 101, the second support member 201 is put on the first support member 101 (in this case, the second support member 20 is placed on the first support member 101).
1 in a state where the rod lens 501 on the V-groove 510 can be contacted from outside with the first support member 10
After arranging the rod lens 501 in the V-groove 510 and fixing the rod lens 501 at an appropriate position, the second support member 201 is put on the first support member 101, and the parallel light is applied to the opening of the second support member 201. Lead.

With this configuration, a space for inserting an optical element such as an optical isolator (space behind the V-groove 510 where the rod lens 501 is disposed) can be formed without lowering the coupling efficiency. Becomes At this time, when two stages of optical isolators are inserted, the first
Since the V-groove 510 of the support member 101 and the opening of the second support member 201 can be inserted separately, the form of the module can be combined into a contact. The other points are the same as the above embodiment.

Fourth Embodiment FIG. 6 shows a fourth embodiment of the present invention. FIG. 6 shows the laser module of the present embodiment in a sectional view along the optical axis of the laser light as in FIG. The same members as those of the other examples are given the same numbers. In this embodiment, the semiconductor laser 10
As No. 2, a laser whose polarization state of output light is switched between TE and TM depending on the state of excitation is used. Such a semiconductor laser is disclosed in, for example, Japanese Patent Application Laid-Open No. 7-162888, but has a distribution in which the active layer and the grating period are adjusted to realize a state in which the gains of the TE mode and the TM mode compete with each other. The feedback type semiconductor laser can be realized by separating the semiconductor laser into two regions into which current can be independently injected.

In order to obtain an intensity-modulated signal using the semiconductor laser 102 having the above configuration, a 45-degree mirror surface 105 is required.
Instead, a polarizing beam splitter 601 was used. The first lens 103 and the second lens 202 are fixed to the second support member 201 as in the first and second embodiments. The polarization beam splitter 601 is fixed to the first support member 101, and in this embodiment, only the TM mode laser light is directed in the vertical direction and can be coupled to the optical fiber 206. As a result, the polarization direction of the output light is switched by a slight change in the current injected into the semiconductor laser 102, and the output light is directed vertically by the polarization beam splitter 601 and coupled to the optical fiber 206, and the optical pulse signal having a large extinction ratio Can be obtained. Other configurations and manufacturing methods are the same as those of the first embodiment.

As shown in FIG. 7, at the same time, a laser beam that can travel straight through the polarization beam splitter 601 depending on the direction of polarization can also be used. In this case, the polarization beam splitter 601
An opening 701 is also provided at the rear of the device, and the intensity of the laser beam that has traveled straight is monitored by a photodetector 702 or the like. Accordingly, there is no need to provide a detector behind the semiconductor laser 102, and the end face of the semiconductor laser 102 can be coated with a highly reflective film at the rear end face, so that high output can be expected. Other configurations and manufacturing methods are the same as those of the first embodiment.

Although the embodiment described above does not mention the hermetic sealing, the first support member is fixed to the first support member by welding or the like, and then the first holder is mounted in a nitrogen atmosphere. It is also possible to hermetically seal the members installed in the support member and the second support member. By hermetically sealing, the function of the optical element inside the module can be maintained in a good state for a long time. The optical fiber used in the embodiment is not limited to a single mode optical fiber, but may be any type as long as it can transmit light.
Further, in the above-described embodiment, the module is configured to couple the laser beam to the optical fiber. However, a receptacle may be used instead of the optical fiber in order to further reduce the size of the module.

[0036]

As described above, according to the invention of the present application, it is possible to easily arrange a large number of optical coupling elements on the optical axis of the output light of a light emitting element such as a semiconductor laser. The mounting process is simplified, and optical modules can be stably mass-produced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a configuration of a first exemplary embodiment of the present invention.

FIG. 2 is a plan view of a first support member according to the first embodiment of the present invention.

FIG. 3 is a sectional view showing a configuration of a second embodiment of the present invention.

FIG. 4 is a configuration diagram of a second lens holder according to a second embodiment of the present invention.

FIG. 5 is a side view of a first support member according to a third embodiment of the present invention.

FIG. 6 is a sectional view showing a configuration of a fourth embodiment of the present invention.

FIG. 7 is a sectional view showing a configuration of a modification of the fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 101 First support member 102 Semiconductor laser 103 First lens 105 Mirror surface 107 Center mark 110 Electrode pad 111 Printed wiring terminal 112 External terminal 113 Position adjustment groove 201 Second support member 202, 402, 701 Opening 203 Second lens 204, 403 Second lens holder 205 Fiber holder 206 Optical fiber 210 Lens fixing groove 210a Adhesive 301 Optical isolator 401 Second lens holder 501 Rod lens 510 V groove 601 Polarizing beam splitter 702 Receiver

Claims (17)

[Claims] 1. An optical module comprising a first support member and a second support member, wherein the first support member includes a portion on which a light emitting element is installed, a portion on which a first lens is provided, and a first lens. A light deflecting unit provided with a deflecting unit for deflecting at least a part of the light transmitted from the light emitting element in the direction of the second support member, wherein the second support member irradiates the light from the light deflecting unit. An optical module, comprising: a light guide section that guides the light through a second lens provided in the light guide section and inputs the light to a light guide member attached to an output end of the light guide section. 2. The optical module according to claim 1, wherein the second support member has a portion for fixing the first lens. A first lens formed on the first support member;
2. The semiconductor optical module according to claim 1, wherein the semiconductor optical module is fixed in a groove. 4. The optical module according to claim 1, wherein at least one optical functional element is provided in an optical path between the first lens and the second lens. 5. The first support member and the second support member are joined so that their joint planes are joined together, and an optical path emitted from the light emitting element and reaching the light deflecting unit via the first lens extends parallel to the joint plane. 5. The optical module according to claim 1, wherein the light deflecting unit deflects the light path in a direction substantially perpendicular to the bonding plane. 6. The light guide portion of the second support member is an opening extending in a direction substantially perpendicular to the joint plane.
The lens is fitted and fixed.
An optical module as described. 7. The optical module according to claim 1, wherein the first support member is made of silicon. 8. An optical module comprising a light emitting element and a lens coupling element for coupling light from the light emitting element to a light guide member, wherein the optical module has a first light emitting element.
The first support member and the second support member are configured by joining and joining the support member and the second support member provided with the light guide member.
Between the supporting members, a first lens for collimating light from the light emitting element is provided near the light emitting element surface that emits the light,
The first support member includes a deflecting unit that directs at least a part of light from the light emitting element toward the second support member, which is substantially perpendicular to an optical path connecting the light emitting element and the first lens, to an output side of the first lens. Wherein the second support member couples the substantially vertically upwardly directed light to the light guide member via a second lens provided in an opening extending in a substantially vertical direction. The optical module according to claim 1. 9. A semiconductor optical module comprising a semiconductor laser as a light emitting element as an optical transmitter and a lens coupling element provided for coupling the semiconductor laser light to an optical fiber as an optical guide member, A semiconductor laser is provided on a first support member of the semiconductor optical module, and a first lens is provided near a resonator surface that emits laser light to collimate the semiconductor laser light, and is adjacent to an emission side of the first lens. A deflecting means for directing at least a part of the laser light upward substantially perpendicularly to the upper surface of the first support member, and an optical functional element and a second lens provided on the second support member. The optical module according to claim 8, wherein the optical module is coupled to an optical fiber through the optical fiber. 10. The optical module according to claim 1, wherein the deflecting means is a 45-degree mirror surface. 11. The optical module according to claim 10, wherein the mirror surface is made of a metal material, and has a reflectance of approximately 100% when light is incident on the mirror surface at 45 degrees. 12. A semiconductor laser chip, which is a light emitting element provided on a first support member, is a polarization-modulated laser having a characteristic that its polarization is changed by an electric current to be injected, and a polarized light beam adjacent to an emission side of the first lens. A splitter is provided as a deflecting unit, and the polarization of the laser light causes the polarization beam splitter to direct the laser light substantially vertically upward with respect to the upper surface of the first support member, and this light is provided on the second support member. Second
The optical module according to claim 1, wherein the optical module is coupled to an optical fiber via a lens. 13. An optical module according to claim 12, wherein a photodetector is provided immediately after emission of the polarization beam splitter in order to receive a laser beam having a polarization not vertically directed by the polarization beam splitter. 14. The method for manufacturing an optical module according to claim 1, wherein the light from the light emitting element is converted into parallel light and guided to the light guide portion of the second support member. Joining the first support member provided with the first support member to the second support member, installing the second lens on the light guide portion of the second support member, and outputting the light guide portion of the second support member. A method for manufacturing an optical module, comprising: installing a light guide member in a portion so that light from a second lens is coupled thereto. 15. The light from the light emitting element is converted into parallel light to form a second light.
In the process of joining the first support member on which the light emitting element is installed to the second support member so as to be guided to the guide portion of the support member, the second support member converts the light from the light emitting element into parallel light. The method according to claim 14, wherein the first lens is fixed. 16. The light from the light emitting element becomes parallel light and becomes second light.
In the process of joining the first support member, on which the light emitting element is installed, to the second support member so as to be guided to the guide portion of the support member, the first support member converts the light from the light emitting element into parallel light. The method for manufacturing an optical module according to claim 14, wherein the first support member is joined to the second support member after setting the first lens in the groove portion. 17. The light from the light emitting element is converted into parallel light,
In the process of joining the first support member on which the light emitting element is installed to the second support member so as to be guided to the guide portion of the support member, after joining the first support member to the second support member, The method for manufacturing an optical module according to claim 14, wherein an installation position of the first lens in the groove of the first support member is adjusted so that light from the light emitting element becomes parallel light.