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WO2018159373A1 - Module optique et dispositif de surveillance optique - Google Patents

Module optique et dispositif de surveillance optique Download PDF

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Publication number
WO2018159373A1
WO2018159373A1 PCT/JP2018/005876 JP2018005876W WO2018159373A1 WO 2018159373 A1 WO2018159373 A1 WO 2018159373A1 JP 2018005876 W JP2018005876 W JP 2018005876W WO 2018159373 A1 WO2018159373 A1 WO 2018159373A1
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WO
WIPO (PCT)
Prior art keywords
light
unit
monitoring unit
specific
branched
Prior art date
Application number
PCT/JP2018/005876
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English (en)
Japanese (ja)
Inventor
功 冨田
Original Assignee
日本電気株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本電気株式会社 filed Critical 日本電気株式会社
Publication of WO2018159373A1 publication Critical patent/WO2018159373A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/02—Structural details or components not essential to laser action
    • H01S5/022—Mountings; Housings
    • H01S5/0239—Combinations of electrical or optical elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
    • H01S5/068—Stabilisation of laser output parameters
    • H01S5/0683—Stabilisation of laser output parameters by monitoring the optical output parameters
    • H01S5/0687—Stabilising the frequency of the laser

Definitions

  • the present invention relates to an optical module or the like, for example, an optical module or the like having an optical monitoring function for receiving and monitoring emitted light that is light emitted from a light source unit.
  • optical modules included in an optical network are required to be downsized in addition to increasing the information communication speed and increasing the amount of information communication. Furthermore, when the optical module is used for optical communication, it is necessary to adjust the wavelength of the output light to a certain level with high accuracy.
  • FIG. 6 is a top view showing the structure of a general optical module 500 in a transparent manner.
  • FIG. 7 is a cross-sectional view showing a configuration of a general optical module 500, which is a cross-sectional view taken along the line BB of FIG.
  • the general optical module 500 includes an optical monitoring unit 510, a light source light output unit 520, and a housing 530.
  • the optical fiber 700 is connected to the end of a general optical module 500 via a condenser lens 600.
  • the optical monitoring unit 510 includes an optical branching unit 511, a filter 512, a specific light monitoring unit 513, an emitted light monitoring unit 514, and an optical monitoring unit side temperature adjustment unit 515.
  • a Peltier element 516 is provided.
  • the light branching unit 511, the filter 512, the specific light monitoring unit 513, the emitted light monitoring unit 514, and the light monitoring unit side temperature adjustment unit 515 are provided on the Peltier element 516.
  • the light branching unit 511 branches the light incident from the light source light output unit 520 into the first branched light ⁇ 1 and the second branched light ⁇ 2.
  • the filter 512 transmits only a specific wavelength band in the incident first branched light ⁇ 1 and emits it as specific light.
  • the specific light monitoring unit 513 receives and monitors the specific light ⁇ 3 transmitted through the filter 512 and output.
  • the outgoing light monitoring unit 514 receives and monitors the second branched light ⁇ 2 without passing through the filter 512.
  • the light monitoring unit side temperature adjustment unit 515 adjusts the temperature in the light monitoring unit 510.
  • the light source light output unit 520 includes a light source unit 521, a resonance unit 522, a lens 523, a lens 524, a light source light output unit side temperature adjustment unit 525, and an isolator 526.
  • a Peltier element 527 is provided.
  • the light source unit 521, the resonance unit 522, the lens 523, the lens 524, the light source light output unit side temperature adjustment unit 525, and the isolator 526 are provided on the Peltier element 527.
  • the light source unit 521 generates light source light and emits the light to the front side (lens 524 side) and the rear side (resonance unit 522 side).
  • the resonating unit 522 resonates the output light of the light source unit 521 and emits the resonated light to the light monitoring unit 510 via the lens 523.
  • a ring resonator can be used for the resonance part 522.
  • the light branching unit 511 branches the light emitted from the light source unit 521 into the first branched light ⁇ 1 and the second branched light ⁇ 2. To do.
  • the first branched light ⁇ 1 passes through the filter 512 and enters the specific light monitoring unit 513.
  • the second branched light ⁇ 2 enters the outgoing light monitoring unit 514 without passing through the filter 512.
  • the specific light monitoring unit 513 receives and monitors the specific light ⁇ 3 transmitted through the filter 512 and emitted.
  • the emitted light monitoring unit 514 receives and monitors the second branched light ⁇ 2.
  • the light monitoring unit 510 determines whether the output value of the specific light ⁇ 3 that is the monitoring result of the specific light monitoring unit 513 and the output value of the second branched light ⁇ 2 that is the monitoring result of the emitted light monitoring unit 514 are changed over time. Detect wavelength shift. Then, the light monitoring unit side temperature adjustment unit 515 adjusts the temperatures in the light monitoring unit 510 and the light source light output unit 520 so that there is no wavelength shift. Thereby, the wavelength of the light emitted from the light source unit 521 to the optical fiber 700 via the isolator 526 and the condenser lens 600 can be stabilized.
  • JP 2008-227170 A JP 2012-008140 A JP 2003-110190 A Japanese Patent Laid-Open No. 2002-237651
  • the first branched light ⁇ 1 and the second branched light ⁇ 2 are orthogonal to each other so that the optical branching unit 511, the filter 512, and the specific light monitoring are performed.
  • the light branching unit 511 emits light along the direction parallel to the mounting surfaces of the unit 513 and the outgoing light monitoring unit 514. For this reason, there is a problem that the mounting area of the light monitoring unit 510, that is, the area occupied by the mounting surface of the light monitoring unit 510 is increased. In Patent Documents 1-3, there is no problem that the area occupied by the light monitoring unit on the mounting surface becomes large.
  • the present invention has been made in view of such circumstances, and an object of the present invention is to provide an optical module and the like that can reduce the area occupied on the mounting surface.
  • An optical module of the present invention includes a light source unit that generates and emits light, a light monitoring unit that receives emitted light that is light emitted from the light source unit, and a housing that houses the light source unit and the light monitoring unit.
  • a light branching unit for branching the emitted light into a first branched light and a second branched light, and only a specific wavelength band among the first branched light.
  • a specific light monitoring unit that receives and monitors the specific light transmitted and emitted by the filter, and receives the second branched light without passing through the filter.
  • the emitted light monitoring unit for monitoring, and the filter is disposed between the light branching unit and the specific light monitoring unit, and the first branched light, the second branched light, and the
  • the surface including the specific light includes the specific light monitoring unit and the emission light monitoring.
  • An optical monitoring device includes an optical branching unit that splits outgoing light, which is light emitted from a light source unit, into first branched light and second branched light, and the first branched light.
  • a filter that transmits and emits only a specific wavelength band as specific light, a specific light monitor that receives and monitors the specific light transmitted and emitted by the filter, and the first light without passing through the filter.
  • An outgoing light monitoring unit that receives and monitors the two branched lights, and the surface including the first branched light, the second branched light, and the specific light includes the specific light monitoring part, the outgoing light monitoring part, It is provided so as to extend in a direction perpendicular to the mounting surface on which the optical branching unit and the filter are mounted.
  • optical module and the like it is possible to reduce the area occupied on the mounting surface.
  • FIG. 1 is a top view showing the configuration of the optical module 100 in a transparent manner.
  • FIG. 2 is a cross-sectional view showing a configuration of the optical module 100, which is a cross-sectional view taken along the line AA in FIG.
  • the light monitoring unit side temperature adjusting unit 115, the Peltier element 116 includes a light monitoring unit 110, a light source light output unit 120, and a housing 130.
  • the optical fiber 300 is connected to the end of the optical module 100 via the condenser lens 200.
  • the light monitoring unit 110 is also called a “wavelength locker” because it has a function of adjusting the wavelength of emitted light to be constant.
  • the light monitoring unit 110 and the light source light output unit 120 are accommodated in a housing 130.
  • the optical monitoring unit 110 includes an optical branching unit 111, a filter 112, a specific light monitoring unit 113, an emitted light monitoring unit 114, and an optical monitoring unit side temperature adjustment unit 115.
  • the Peltier element 116 is provided.
  • the light monitoring unit 110 receives emitted light that is light emitted from the light source unit 121 described later.
  • the light branching unit 111, the filter 112, the specific light monitoring unit 113, the emitted light monitoring unit 114, and the light monitoring unit side temperature adjustment unit 115 are provided on the Peltier element 116.
  • the light monitoring unit side temperature adjustment unit 115 and the Peltier element 116 are not essential components of the present embodiment. Accordingly, the light monitoring unit 110 can be configured by omitting these.
  • the light branching unit 111 is arranged on the light source light output unit 120 side.
  • the light branching unit 111 splits the light incident from the light source light output unit 120 side into the first branched light ⁇ 1 and the second branched light ⁇ 2 and emits it.
  • the first branched light ⁇ 1 enters the filter 112.
  • the second branched light ⁇ 2 enters the outgoing light monitoring unit 114 without passing through the filter 112.
  • the light incident from the light source light output unit 120 side is emitted light which is light emitted from the light source unit 121 described later.
  • a prism is used for the light branching unit 111.
  • the filter 112 is provided so as to face the optical branching unit 111.
  • the filter 112 is disposed between the light branching unit 111 and the specific light monitoring unit 113.
  • the filter 112 transmits only a specific wavelength band of the incident first branched light ⁇ 1 and emits it as the specific light ⁇ 3.
  • an etalon element is used for the filter 112 for example.
  • An etalon is a wavelength filter that utilizes multiple interference between two opposing reflecting surfaces. Further, as a feature of the etalon, a sharp transmission waveform having a periodic transmission peak and a narrow half-value width is obtained in the wavelength (frequency) region.
  • the specific light monitoring unit 113 is provided so as to face the light branching unit 111 via the filter 112. Therefore, the first branched light ⁇ 1 passes through the filter 112 and enters the specific light monitoring unit 113.
  • the specific light monitoring unit 113 receives and monitors the specific light ⁇ 3.
  • the specific light ⁇ 3 is light transmitted through the filter 112 and emitted as described above.
  • a monitoring PD Photo Diode
  • the outgoing light monitoring unit 114 is provided to face the light branching unit 111 without passing through the filter 112. For this reason, the second branched light ⁇ ⁇ b> 2 enters the outgoing light monitoring unit 114 without passing through the filter 112.
  • the emitted light monitoring unit 114 receives the second branched light ⁇ 2 without passing through the filter 112 and monitors it.
  • a monitor PD can be used for the emitted light monitoring unit 114.
  • the light monitoring unit side temperature adjustment unit 115 is provided in the vicinity of the filter 112.
  • the light monitoring unit side temperature adjustment unit 115 uses the Peltier element 116 to adjust the temperature in the light monitoring unit 110.
  • a control circuit including a thermistor is used for the light monitoring unit side temperature adjustment unit 115.
  • the first branched light ⁇ 1, the second branched light ⁇ 2, and the specific light ⁇ 3 are set on the same plane. Further, the first branched light ⁇ 1 and the second branched light ⁇ 2 are set to be parallel to each other. The first branched light ⁇ 1 and the specific light ⁇ 3 are set to be parallel to each other.
  • the surface including the first branched light ⁇ 1, the second branched light ⁇ 2, and the specific light ⁇ 3 is provided so as to extend in a direction perpendicular to the mounting surface 116a that is the upper surface of the Peltier element 116. It has been.
  • the optical branching unit 111, the filter 112, the specific light monitoring unit 113, the emitted light monitoring unit 114, and the light monitoring unit side temperature adjustment unit 115 are mounted on the mounting surface 116a that is the upper surface of the Peltier element 116. . If the light branching unit 111, the filter 112, the specific light monitoring unit 113, the emitted light monitoring unit 114, and the light monitoring unit side temperature adjustment unit 115 can be mounted, the mounting surface 116a can be configured. Therefore, the mounting surface 116 a is not limited to the upper surface of the Peltier element 116.
  • the light source light output unit 120 includes a light source unit 121, a resonance unit 122, a lens 123, a lens 124, a light source light output unit side temperature adjustment unit 125, and an isolator 126.
  • the Peltier device 127 is provided.
  • a planar lightwave circuit (Planar Lightwave Circuit) PLC including a light source unit 121 and a resonance unit 122 is configured.
  • the light source unit 121, the resonance unit 122, the lens 123, the lens 124, the light source light output unit side temperature adjustment unit 125, and the isolator 126 are provided on the Peltier element 127.
  • the light source light output unit side temperature adjustment unit 125, the isolator 126, and the Peltier element 127 are not essential components of the present embodiment. Therefore, the light source light output unit 120 can be configured by omitting these.
  • the light source unit 121 is provided between the resonance unit 122 and the lens 124.
  • an SOA semiconductor Optical Amplifier
  • the resonance unit 122 is provided between the lens 123 and the light source unit 121.
  • a ring resonator can be used for the resonance unit 122.
  • the resonating unit 122 is provided with a heater (not shown) so that the temperature of the resonating unit 122 can be changed.
  • the PLC outputs the light source light from the end surface on the lens 124 side of the light source unit 121 toward the lens 124 and also toward the lens 123.
  • the lens 123 is provided on the light monitoring unit 110 side.
  • the lens 123 is provided so as to face the light branching unit 111.
  • the lens 123 emits the light emitted from the resonance unit 122 to the light branching unit 111 side.
  • a collimating lens is used for the lens 123.
  • the lens 124 is provided on the condenser lens 200 side.
  • the lens 124 is provided between the light source unit 121 and the isolator 126.
  • the lens 124 causes the light source light emitted from the light source unit 121 to enter the optical fiber 300 through the isolator 126 and the condenser lens 200.
  • a collimating lens is used for the lens 124.
  • the light source light output unit side temperature adjustment unit 125 is provided in the light source light output unit 120 and in the vicinity of the light source unit 121.
  • the light source light output unit side temperature adjustment unit 125 adjusts the temperature in the light source light output unit 120 using the Peltier element 127.
  • a control circuit including a thermistor is used for the light source light output unit side temperature adjustment unit 125.
  • the isolator 126 is provided on the optical fiber 300 side of the housing 130.
  • the isolator 126 is provided between the lens 124 and the condenser lens 200.
  • the isolator 126 transmits only light traveling in the forward direction and blocks light traveling in the reverse direction. Specifically, the isolator 126 transmits light incident from the lens 124 toward the condenser lens 200 side. On the other hand, the isolator 126 blocks light incident from the condenser lens 200 side.
  • the housing 130 accommodates the light monitoring unit 110 and the light source light output unit 120.
  • a material of the housing 130 for example, a metal member such as a stainless material is used.
  • the housing 130 has a plurality of terminals 131 and a mounting portion 132.
  • at least the plurality of terminals 131 and the attachment portion 132 are not essential components of the present embodiment. Accordingly, the casing 130 can be configured by omitting these.
  • the plurality of terminals 131 are provided outside the housing 130 so as to extend outward from the housing.
  • the housing 130 is mounted on an electronic board (not shown).
  • the plurality of terminals 131 are attached to the pads formed on the electronic substrate by soldering.
  • the plurality of attachment portions 132 are provided outside the housing 130 and in the vicinity of the four corners.
  • the plurality of attachment portions 132 are fixed to attachment holes (not shown) formed in the electronic substrate by screwing or the like.
  • the condenser lens 200 is attached between one end of the housing 130 and the optical fiber 300.
  • the condenser lens 200 condenses the light source light emitted through the lens 124 and the isolator 126 and emits the light toward the optical fiber 300.
  • the optical fiber 300 is attached to the housing 130 via the condenser lens 200.
  • the optical fiber 300 transmits light emitted from the optical module 100 to an external device (not shown).
  • FIG. 3 is a diagram illustrating an operation flow of the optical module 100.
  • the PLC emits light source light (S1). Specifically, the PLC generates light source light and emits the light to the front side (lens 124 side) and the rear side (resonance unit 122 side).
  • the light output from the PLC is output from the lens 124 side end surface of the light source unit 121 and enters the optical fiber 300 via the lens 124 and the isolator 126.
  • the light output from the PLC is incident on the light branching unit 111 of the light monitoring unit 110 via the resonance unit 122 and the lens 123 (S2).
  • the light branching unit 111 branches the incident light into the first branched light ⁇ 1 and the second branched light ⁇ 2 (S3). Specifically, when receiving the light incident from the light source light output unit 120 side, the light branching unit 111 branches the incident light into the first branched light ⁇ 1 and the second branched light ⁇ 2, and emits it.
  • the first branched light ⁇ 1 is incident on the filter 112 (S4).
  • the filter 112 transmits only the specific wavelength band of the incident first branched light ⁇ 1 and emits it as the specific light ⁇ 3 (S5).
  • the specific light ⁇ 3 enters the specific light monitoring unit 113 (S6).
  • the specific light monitoring unit 113 receives the specific light ⁇ 3 and monitors it (S7).
  • the first branched light ⁇ 1, the second branched light ⁇ 2, and the specific light ⁇ 3 are set on the same plane. Further, the first branched light ⁇ 1 and the second branched light ⁇ 2 are set to be parallel to each other. Similarly, the first branched light ⁇ 1 and the specific light ⁇ 3 are set to be parallel to each other.
  • the second branched light ⁇ 2 enters the outgoing light monitoring unit 114 (S8). At this time, the second branched light ⁇ 2 enters the outgoing light monitoring unit 114 without passing through the filter 112.
  • the emitted light monitoring unit 114 receives the second branched light ⁇ 2 and monitors it (S9).
  • the light monitoring unit 110 calculates the ratio of the output values of the specific light ⁇ 3 and the second branched light ⁇ 2 based on the specific light ⁇ 3 and the second branched light ⁇ 2 (S10). Then, the light monitoring unit 510 is based on the ratio between the output value of the specific light ⁇ 3 that is the monitoring result of the specific light monitoring unit 513 and the output value of the second branched light ⁇ 2 that is the monitoring result of the emitted light monitoring unit 514. The specific light ⁇ 3 wavelength ⁇ is detected.
  • the light monitoring unit 110 adjusts the temperature of a heater (not shown) attached to the resonance unit 122 so that the detected value ⁇ of the wavelength of the specific light ⁇ 3 approaches the target value ⁇ 0 of the wavelength of the specific light ⁇ 3.
  • the temperature of the ring portion of the resonance unit 122 is adjusted. (S11).
  • the ring diameter of the resonance part 122 is adjusted, and the wavelength of the light output from PLC is adjusted.
  • the detected value ⁇ of the wavelength of the specific light ⁇ 3 can be brought close to the target value ⁇ 0 of the wavelength of the specific light ⁇ 3.
  • the wavelength of light emitted from the light source unit 121 to the optical fiber 300 via the isolator 126 and the condenser lens 200 can be stabilized.
  • the light monitoring unit 110 can be configured as the light monitoring device 110A as follows.
  • FIG. 4 is a top view showing the configuration of the optical monitoring device 110A according to the embodiment of the present invention in a transparent manner.
  • FIG. 5 is a cross-sectional view showing the configuration of the optical monitoring device 110A.
  • the optical monitoring device 110A includes an optical branching unit 111, a filter 112, a specific light monitoring unit 113, an emitted light monitoring unit 114, and an optical monitoring unit side temperature adjustment unit 115.
  • a housing 117 is provided.
  • the optical monitoring unit 110 shown in FIGS. 1 and 2 is compared with the optical monitoring device 110A shown in FIGS. 110 A of optical monitoring apparatuses differ from the optical monitoring part 110 by the point which has the housing
  • FIG. 1 the optical monitoring unit 110 shown in FIGS. 1 and 2 is compared with the optical monitoring device 110A shown in FIGS. 110 A of optical monitoring apparatuses differ from the optical monitoring part 110 by the point which has the housing
  • the housing 117 houses the light branching unit 111, the filter 112, the specific light monitoring unit 113, the emitted light monitoring unit 114, and the light monitoring unit side temperature adjustment unit 115.
  • the casing 117 has an opening 117a.
  • the light source light enters the light branching portion 111 in the casing 117 through the opening 117a.
  • optical monitoring device 110A is provided, for example, on the Peltier element 116 shown in FIGS. Thereby, the optical monitoring device 110A has the same function as the optical monitoring unit 110.
  • the optical module 100 includes the light source unit 121, the light monitoring unit 110, and the housing 130.
  • the light source unit 121 generates and emits light.
  • the light monitoring unit 110 receives emitted light that is light emitted from the light source unit 121.
  • the housing 130 accommodates the light source unit 121 and the light monitoring unit 110.
  • the light monitoring unit 110 includes a light branching unit 111, a filter 112, a specific light monitoring unit 113, and an emitted light monitoring unit 114.
  • the light branching unit 111 branches the emitted light into the first branched light ⁇ 1 and the second branched light ⁇ 2, and emits it.
  • the filter 112 transmits and emits only the specific wavelength band of the first branched light ⁇ 1 as the specific light ⁇ 3.
  • the specific light monitoring unit 113 receives and monitors the specific light ⁇ 3 transmitted through the filter 112 and emitted.
  • the emitted light monitoring unit 114 receives and monitors the second branched light ⁇ 2 without passing through the filter 112.
  • the filter 112 is disposed between the light branching unit 111 and the specific light monitoring unit 113.
  • the surface including the first branched light ⁇ 1, the second branched light ⁇ 2, and the specific light ⁇ 3 is a mounting surface 116a on which the specific light monitoring unit 113, the emitted light monitoring unit 114, the light branching unit 111, and the filter 112 are mounted. Are provided so as to extend in a direction perpendicular to the direction.
  • the specific light monitoring unit 113, the emitted light monitoring unit 114, the light branching unit 111, and the filter 112 are placed on the surface including the first branched light ⁇ 1, the second branched light ⁇ 2, and the specific light ⁇ 3. It is provided so as to extend in a direction perpendicular to the mounting surface 116a (here, it is not necessarily a completely perpendicular direction, and an error of about several degrees (°) is included). For this reason, the area which the specific light monitoring part 113, the emitted light monitoring part 114, the light branching part 111, and the filter 112 occupy in the mounting surface 116a can be made the smallest.
  • the optical module 100 the exclusive area on the mounting surface 116a can be reduced. Therefore, the size of the light monitoring unit 110 can be reduced as compared with the light monitoring unit 510 described with reference to FIGS. 6 and 7. Furthermore, the size of the optical module 100 can be reduced as compared with the general optical module 500.
  • the specific light monitoring unit 113 and the emitted light monitoring unit 114 are provided on the same base material. Thereby, the number of parts can be reduced.
  • the light source unit 121 emits outgoing light to the optical monitoring unit 110 and the optical fiber 300 connected to the housing 130. Thereby, the light emitted from the light source unit 121 can be incident on the optical fiber 300.
  • the light monitoring device (light monitoring unit 110) in the embodiment of the present invention includes a light branching unit 111, a filter 112, a specific light monitoring unit 113, and an emitted light monitoring unit 114.
  • the light branching unit 111 branches the emitted light, which is the light emitted from the light source unit 121, into the first branched light ⁇ 1 and the second branched light ⁇ 2, and outputs the branched light.
  • the filter 112 transmits and emits only the specific wavelength band of the first branched light ⁇ 1 as the specific light ⁇ 3.
  • the specific light monitoring unit 113 receives and monitors the specific light ⁇ 3 transmitted through the filter 112 and emitted.
  • the emitted light monitoring unit 114 receives and monitors the second branched light ⁇ 2 without passing through the filter 112.
  • the filter 112 is disposed between the light branching unit 111 and the specific light monitoring unit 113.
  • the surface including the first branched light ⁇ 1, the second branched light ⁇ 2, and the specific light ⁇ 3 is a mounting surface 116a on which the specific light monitoring unit 113, the emitted light monitoring unit 114, the light branching unit 111, and the filter 112 are mounted.
  • the specific light monitoring unit 113 and the emitted light monitoring unit 114 are provided on the same base material. Even if it is such a structure, there can exist an effect similar to the optical module 100 mentioned above.

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optics & Photonics (AREA)
  • Semiconductor Lasers (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

Le problème décrit par la présente invention est de réduire la zone occupée sur une surface de placement. La solution selon l'invention porte sur une unité de ramification optique (111) qui ramifie la lumière émise en une première lumière ramifiée (α1) et une seconde lumière ramifiée (α2) et qui les émet. Un filtre (112) transmet uniquement une bande de longueur d'onde spécifique de la première lumière ramifiée (α1) en tant que lumière spécifique (α3) et émet cette dernière. Une unité de surveillance de lumière spécifique (113) reçoit et surveille la lumière spécifique (α3) transmise à travers le filtre (112) et émise par celui-ci. Une unité de surveillance de lumière émise (114) reçoit et surveille la seconde lumière ramifiée (α2) sans que cette lumière ne passe à travers le filtre (112). Le filtre (112) est situé entre l'unité de ramification optique (111) et l'unité de surveillance de lumière spécifique (113). Un plan comprenant la première lumière ramifiée (α1), la seconde lumière ramifiée (α2) et la lumière spécifique (α3) est situé de façon à s'étendre dans une direction perpendiculaire à une surface de placement (116a) sur laquelle sont placés l'unité de surveillance de lumière spécifique (113), l'unité de surveillance de lumière émise (114), l'unité de ramification optique (111) et le filtre (112).
PCT/JP2018/005876 2017-02-28 2018-02-20 Module optique et dispositif de surveillance optique WO2018159373A1 (fr)

Applications Claiming Priority (2)

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JP2017-035844 2017-02-28
JP2017035844 2017-02-28

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WO2018159373A1 true WO2018159373A1 (fr) 2018-09-07

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002237651A (ja) * 2000-12-06 2002-08-23 Mitsubishi Electric Corp 波長モニタ装置および半導体レーザ装置
US7009716B2 (en) * 2003-08-26 2006-03-07 Electronics And Telecommunications Research Institute System for monitoring optical output/wavelength
JP2008053555A (ja) * 2006-08-25 2008-03-06 Fujitsu Ltd 波長ロッカー
JP2008227170A (ja) * 2007-03-13 2008-09-25 Nec Electronics Corp 光モジュール
JP2010232337A (ja) * 2009-03-26 2010-10-14 Fujitsu Optical Components Ltd 光源装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002237651A (ja) * 2000-12-06 2002-08-23 Mitsubishi Electric Corp 波長モニタ装置および半導体レーザ装置
US7009716B2 (en) * 2003-08-26 2006-03-07 Electronics And Telecommunications Research Institute System for monitoring optical output/wavelength
JP2008053555A (ja) * 2006-08-25 2008-03-06 Fujitsu Ltd 波長ロッカー
JP2008227170A (ja) * 2007-03-13 2008-09-25 Nec Electronics Corp 光モジュール
JP2010232337A (ja) * 2009-03-26 2010-10-14 Fujitsu Optical Components Ltd 光源装置

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