WO2018159373A1 - Optical module and optical monitoring device - Google Patents

Optical module and optical monitoring device 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
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PCT/JP2018/005876
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French (fr)
Japanese (ja)
Inventor
功 冨田
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日本電気株式会社
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Publication date
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Publication of WO2018159373A1 publication Critical patent/WO2018159373A1/en

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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)
  • Optical Couplings Of Light Guides (AREA)
  • Semiconductor Lasers (AREA)

Abstract

[Problem] To reduce the occupied area on a placement surface. [Solution] An optical branching unit 111 branches emitted light into first branched light α1 and second branched light α2 and emits the same. A filter 112 transmits only a specific wavelength band of the first branched light α1 as specific light α3 and emits the same. A specific light monitoring unit 113 receives and monitors the specific light α3 transmitted through and emitted by the filter 112. An emitted light monitoring unit 114 receives and monitors the second branched light α2, without such light passing through the filter 112. The filter 112 is disposed between the optical branching unit 111 and the specific light monitoring unit 113. A plane including the first branched light α1, the second branched light α2, and the specific light α3 is provided so as to extend in a direction perpendicular to a placement surface 116a on which the specific light monitoring unit 113, the emitted light monitoring unit 114, the optical branching unit 111, and the filter 112 are placed.

Description

光モジュールおよび光監視装置Optical module and optical monitoring device
　本発明は、光モジュール等に関し、例えば、光源部により出射される光である出射光を受光して監視する光監視機能を有する光モジュール等に関する。 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.
　近年、通信情報量の急激な増加に伴って、伝送容量の拡大が要求されている。光通信技術においても、伝送容量の拡大の要求に伴って、光ネットワークシステムの情報通信速度の高速化や情報通信量の大容量化が推進されている。また、光ネットワークに含まれる光モジュールに対しては、情報通信速度の高速化や情報通信量の大容量化に加えて、小型化も要求されている。さらに、光モジュールを光通信に用いる場合、出力する光の波長を一定に精度良く調整する必要もある。 In recent years, with the rapid increase in the amount of communication information, expansion of transmission capacity is required. Also in the optical communication technology, along with a request for an increase in transmission capacity, an increase in information communication speed and an increase in information communication amount of an optical network system are being promoted. Further, 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.
　出力光の波長調整機能を有する光モジュールの一例を説明する。 An example of an optical module having an output light wavelength adjustment function will be described.
　図６は、一般的な光モジュール５００の構成を透過して示す上面図である。図７は、一般的な光モジュール５００の構成を示す断面図であって、図６のＢ－Ｂ切断線で切断した断面図である。 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.
　図６および図７に示されるように、一般的な光モジュール５００は、光監視部５１０と、光源光出力部５２０と、筐体５３０とを備えている。また、光ファイバー７００は、集光レンズ６００を介して、一般的な光モジュール５００の端部に接続されている。 6 and 7, 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.
　図６および図７に示されるように、光監視部５１０は、光分岐部５１１と、フィルタ５１２と、特定光監視部５１３と、出射光監視部５１４と、光監視部側温度調整部５１５と、ペルチェ素子５１６を備えている。光分岐部５１１、フィルタ５１２、特定光監視部５１３、出射光監視部５１４および光監視部側温度調整部５１５は、ペルチェ素子５１６上に設けられている。 As shown in FIGS. 6 and 7, 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.
　光分岐部５１１は、光源光出力部５２０から入射する光を、第１の分岐光β１と第２の分岐光β２に分岐する。フィルタ５１２は、入射される第１の分岐光β１のうちで特定の波長帯域のみを透過して特定光として出射する。特定光監視部５１３は、フィルタ５１２により透過されて出力された特定光β３を受光して監視する。出射光監視部５１４は、フィルタ５１２を介すことなく、第２の分岐光β２を受光して、監視する。光監視部側温度調整部５１５は、光監視部５１０内の温度を調整する。 The light branching unit 511 branches the light incident from the light source light output unit 520 into the first branched light β1 and the second branched light β2. The filter 512 transmits only a specific wavelength band in the incident first branched light β1 and emits it as specific light. The specific light monitoring unit 513 receives and monitors the specific light β3 transmitted through the filter 512 and output. The outgoing light monitoring unit 514 receives and monitors the second branched light β2 without passing through the filter 512. The light monitoring unit side temperature adjustment unit 515 adjusts the temperature in the light monitoring unit 510.
　図６および図７に示されるように、光源光出力部５２０は、光源部５２１と、共振部５２２と、レンズ５２３と、レンズ５２４と、光源光出力部側温度調整部５２５と、アイソレータ５２６と、ペルチェ素子５２７を備えている。光源部５２１、共振部５２２、レンズ５２３、レンズ５２４、光源光出力部側温度調整部５２５およびアイソレータ５２６は、ペルチェ素子５２７上に設けられている。光源部５２１は、光源光を生成し、これを前方側（レンズ５２４側）および後方側（共振部５２２側）へ出射する。共振部５２２は、光源部５２１の出力光を共振させ、レンズ５２３を介して共振後の光を光監視部５１０へ出射する。共振部５２２には、たとえば、リング共振器を用いることができる。 As shown in FIGS. 6 and 7, 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. For the resonance part 522, for example, a ring resonator can be used.
　一般的な光モジュール５００は、光源部５２１の出射光が光監視部５１０に入射すると、光分岐部５１１は光源部５２１の出射光を第１の分岐光β１および第２の分岐光β２に分岐する。第１の分岐光β１は、フィルタ５１２を通って、特定光監視部５１３に入射する。第２の分岐光β２は、フィルタ５１２を通らずに、出射光監視部５１４に入射する。特定光監視部５１３は、フィルタ５１２により透過されて出射された特定光β３を受光して監視する。出射光監視部５１４は、第２の分岐光β２を受光して監視する。光監視部５１０は、特定光監視部５１３の監視結果である特定光β３の出力値と、出射光監視部５１４の監視結果である第２の分岐光β２の出力値の差分の経時変化から、波長のずれを検出する。そして、光監視部側温度調整部５１５は、波長のずれが無くなるように、光監視部５１０内および光源光出力部５２０内の温度を調整する。これにより、光源部５２１からアイソレータ５２６および集光レンズ６００を介して光ファイバー７００へ出射される光の波長を安定させることができる。 In the general optical module 500, when the light emitted from the light source unit 521 enters the light monitoring unit 510, the light branching unit 511 branches the light emitted from the light source unit 521 into the first branched light β1 and the second branched light β2. To do. The first branched light β1 passes through the filter 512 and enters the specific light monitoring unit 513. The second branched light β2 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 β3 transmitted through the filter 512 and emitted. The emitted light monitoring unit 514 receives and monitors the second branched light β2. The light monitoring unit 510 determines whether the output value of the specific light β3 that is the monitoring result of the specific light monitoring unit 513 and the output value of the second branched light β2 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.
　なお、関連する技術が、特許文献１－４にも開示されている。 Related techniques are also disclosed in Patent Documents 1-4.
特開２００８－２２７１７０号公報JP 2008-227170 A 特開２０１２－００８１４０号公報JP 2012-008140 A 特開２００３－１１０１９０号公報JP 2003-110190 A 特開２００２－２３７６５１号公報Japanese Patent Laid-Open No. 2002-237651
　しかしながら、図６および図７に示される一般的な光モジュール５００では、第１の分岐光β１および第２の分岐光β２は、互いに直交するように、光分岐部５１１、フィルタ５１２、特定光監視部５１３および出射光監視部５１４の載置面に対して平行方向に沿って、光分岐部５１１から出射される。このため、光監視部５１０の実装面積、すなわち光監視部５１０の載置面で占める面積が大きくなってしまうという問題があった。なお、特許文献１－３は、いずれも、光監視部が載置面上で占める面積が大きくなることを問題としていない。 However, in the general optical module 500 shown in FIGS. 6 and 7, the first branched light β1 and the second branched light β2 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.
　本発明は、このような事情を鑑みてなされたものであり、本発明の目的は、載置面上での専有面積を低減することができる光モジュール等を提供することにある。 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.
　本発明の光モジュールは、光を生成して出射する光源部と、前記光源部により出射される光である出射光を受光する光監視部と、前記光源部および前記光監視部を収容する筐体を備え、前記光監視部は、前記出射光を第１の分岐光および第２の分岐光に分岐して出射する光分岐部と、前記第１の分岐光のうちで特定の波長帯域のみを特定光として透過して出射するフィルタと、前記フィルタにより透過されて出射された前記特定光を受光して監視する特定光監視部と、前記フィルタを介さずに前記第２の分岐光を受光して監視する出射光監視部とを有し、前記フィルタは、前記光分岐部および前記特定光監視部の間に配置されており、前記第１の分岐光、前記第２の分岐光および前記特定光を含む面は、前記特定光監視部、前記出射光監視部、前記光分岐部および前記フィルタが載置される載置面に対して垂直な方向に延在するように、設けられている。 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. And 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. , So as to extend in a direction perpendicular to the mounting surface of the optical branching section and the filter is placed, it is provided.
　本発明の光監視装置は、光源部により出射される光である出射光を第１の分岐光および第２の分岐光に分岐して出射する光分岐部と、前記第１の分岐光のうちで特定の波長帯域のみを特定光として透過して出射するフィルタと、前記フィルタにより透過されて出射された前記特定光を受光して監視する特定光監視部と、前記フィルタを介さずに前記第２の分岐光を受光して監視する出射光監視部と、前記第１の分岐光、前記第２の分岐光および前記特定光を含む面は、前記特定光監視部、前記出射光監視部、前記光分岐部および前記フィルタが載置される載置面に対して垂直な方向に延在するように、設けられている。 An optical monitoring device according to the present invention 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.
　本発明にかかる光モジュール等によれば、載置面上での専有面積を低減することができる。 According to the optical module and the like according to the present invention, it is possible to reduce the area occupied on the mounting surface.
本発明の実施の形態における光モジュールの構成を透過して示す上面図である。It is a top view which permeate | transmits and shows the structure of the optical module in embodiment of this invention. 本発明の実施の形態における光モジュールの構成を示す断面図である。It is sectional drawing which shows the structure of the optical module in embodiment of this invention. 本発明の第１の実施の形態における光モジュールの動作フローを示す図である。It is a figure which shows the operation | movement flow of the optical module in the 1st Embodiment of this invention. 本発明の実施の形態における光監視装置の構成を透過して示す上面図である。It is a top view which permeate | transmits and shows the structure of the optical monitoring apparatus in embodiment of this invention. 本発明の実施の形態における光監視装置の構成を示す断面図である。It is sectional drawing which shows the structure of the optical monitoring apparatus in embodiment of this invention. 一般的な光モジュールの構成を透過して示す上面図である。It is a top view which permeate | transmits and shows the structure of a general optical module. 一般的な光モジュールの構成を示す断面図である。It is sectional drawing which shows the structure of a common optical module.
＜実施の形態＞
　本発明の第１の実施の形態における光モジュール１００の構成について説明する。図１は、光モジュール１００の構成を透過して示す上面図である。図２は、光モジュール１００の構成を示す断面図であって、図１のＡ－Ａ切断線で切断した断面図である。
る。 <Embodiment>
The configuration of the optical module 100 according to the first embodiment of the present invention will be described. 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
　図１および図２に示されるように、光監視部側温度調整部１１５と、ペルチェ素子１１６は、光監視部１１０と、光源光出力部１２０と、筐体１３０とを備えている。また、光ファイバー３００は、集光レンズ２００を介して、光モジュール１００の端部に接続されている。 As shown in FIGS. 1 and 2, 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.
　なお、光監視部１１０は、出射する光の波長を一定に調整する機能を有するため、「波長ロッカ」とも呼ばれている。 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.
　光監視部１１０および光源光出力部１２０は、筐体１３０に収容されている。 The light monitoring unit 110 and the light source light output unit 120 are accommodated in a housing 130.
　図１および図２に示されるように、光監視部１１０は、光分岐部１１１と、フィルタ１１２と、特定光監視部１１３と、出射光監視部１１４と、光監視部側温度調整部１１５と、ペルチェ素子１１６を備えている。光監視部１１０は、後述の光源部１２１により出射される光である出射光を受光する。 As shown in FIGS. 1 and 2, 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.
　光分岐部１１１、フィルタ１１２、特定光監視部１１３、出射光監視部１１４および光監視部側温度調整部１１５は、ペルチェ素子１１６上に設けられている。ここで、少なくとも、光監視部側温度調整部１１５およびペルチェ素子１１６は、本実施形態の必須の構成要素ではない。したがって、これらを省略して、光監視部１１０を構成することもできる。 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. Here, at least 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.
　図１および図２に示されるように、光分岐部１１１は、光源光出力部１２０側に配置されている。光分岐部１１１は、光源光出力部１２０側から入射する光を第１の分岐光α１および第２の分岐光α２に分岐して出射する。 As shown in FIGS. 1 and 2, 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 α1 and the second branched light α2 and emits it.
　第１の分岐光α１は、フィルタ１１２に入射する。第２の分岐光α２は、フィルタ１１２を通らないで、出射光監視部１１４に入射する。ここで、光源光出力部１２０側から入射する光は、後述の光源部１２１により出射される光である出射光である。なお、光分岐部１１１には、たとえば、プリズムが用いられる。 The first branched light α1 enters the filter 112. The second branched light α2 enters the outgoing light monitoring unit 114 without passing through the filter 112. Here, 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. For the light branching unit 111, for example, a prism is used.
　図１および図２に示されるように、フィルタ１１２は、光分岐部１１１と向かい合うように設けられている。また、フィルタ１１２は、光分岐部１１１および特定光監視部１１３の間に配置されている。フィルタ１１２は、入射される第１の分岐光α１のうちで特定の波長帯域のみを透過して特定光α３として出射する。フィルタ１１２には、たとえば、エタロン（etalon）素子が用いられる。エタロンは、２つの対向する反射面の多重干渉を利用した波長フィルタである。また、エタロンの特徴として、波長（周波数）領域において、周期的な透過ピークを持ち、半値幅の狭い鋭い透過波形が得られる。 1 and 2, 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 α1 and emits it as the specific light α3. For the filter 112, for example, an etalon element is used. 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.
　図１および図２に示されるように、特定光監視部１１３は、フィルタ１１２を介して、光分岐部１１１と向かい合うように設けられている。このため、第１の分岐光α１は、フィルタ１１２を通って、特定光監視部１１３に入射する。特定光監視部１１３は、特定光α３を受光して監視する。なお、特定光α３とは、前述の通り、フィルタ１１２により透過されて出射された光である。特定光監視部１１３には、たとえば、モニタ用ＰＤ（Photo Diode：フォトダイオード）を用いることができる。 1 and 2, 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 α1 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 α3. The specific light α3 is light transmitted through the filter 112 and emitted as described above. For the specific light monitoring unit 113, for example, a monitoring PD (Photo Diode) can be used.
　図１および図２に示されるように、出射光監視部１１４は、フィルタ１１２を介すことなく、光分岐部１１１と向かい合うように設けられている。このため、第２の分岐光α２は、フィルタ１１２を通らずに、出射光監視部１１４に入射する。出射光監視部１１４は、第２の分岐光α２を、フィルタ１１２を介すことなく、受光して、これを監視する。なお、出射光監視部１１４には、たとえば、モニタ用ＰＤを用いることができる。 As shown in FIGS. 1 and 2, 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 α <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 α2 without passing through the filter 112 and monitors it. For example, a monitor PD can be used for the emitted light monitoring unit 114.
　図１に示されるように、光監視部側温度調整部１１５は、フィルタ１１２の近傍に設けられている。光監視部側温度調整部１１５は、ペルチェ素子１１６を用いて、光監視部１１０内の温度を調整する。光監視部側温度調整部１１５には、たとえば、サーミスタを含む制御回路が用いられる。 As shown in FIG. 1, 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. For the light monitoring unit side temperature adjustment unit 115, for example, a control circuit including a thermistor is used.
　ここで、図１および図２に示されるように、第１の分岐光α１、第２の分岐光α２および特定光α３は、同一面上に設定されている。また、第１の分岐光α１および第２の分岐光α２は、互いに平行になるように設定されている。また、第１の分岐光α１と特定光α３は互いに平行になるように設定されている。 Here, as shown in FIGS. 1 and 2, the first branched light α1, the second branched light α2, and the specific light α3 are set on the same plane. Further, the first branched light α1 and the second branched light α2 are set to be parallel to each other. The first branched light α1 and the specific light α3 are set to be parallel to each other.
　また、第１の分岐光α１、第２の分岐光α２および特定光α３を含む面は、ペルチェ素子１１６の上面である載置面１１６ａに対して、垂直な方向に延在するように、設けられている。なお、ペルチェ素子１１６の上面である載置面１１６ａには、光分岐部１１１、フィルタ１１２、特定光監視部１１３、出射光監視部１１４および光監視部側温度調整部１１５が載置されている。なお、光分岐部１１１、フィルタ１１２、特定光監視部１１３、出射光監視部１１４および光監視部側温度調整部１１５を載置することができれば、載置面１１６ａを構成することができる。したがって、載置面１１６ａは、ペルチェ素子１１６の上面に限定されない。 The surface including the first branched light α1, the second branched light α2, and the specific light α3 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. In addition, 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.
　図１および図２に示されるように、光源光出力部１２０は、光源部１２１と、共振部１２２と、レンズ１２３と、レンズ１２４と、光源光出力部側温度調整部１２５と、アイソレータ１２６と、ペルチェ素子１２７を備えている。また、図１に示されるように、光源部１２１と、共振部１２２とを含む平面光波回路（Planar Lightwave Circuit）ＰＬＣを構成する。　光源部１２１、共振部１２２、レンズ１２３、レンズ１２４、光源光出力部側温度調整部１２５およびアイソレータ１２６は、ペルチェ素子１２７上に設けられている。 As shown in FIGS. 1 and 2, 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. Further, as shown in FIG. 1, 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.
　ここで、少なくとも、光源光出力部側温度調整部１２５と、アイソレータ１２６と、ペルチェ素子１２７は、本実施形態の必須の構成要素ではない。したがって、これらを省略して、光源光出力部１２０を構成することもできる。 Here, at least 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.
　図１および図２に示されるように、光源部１２１は、共振部１２２およびレンズ１２４の間に設けられている。光源部１２１には、たとえば、ＳＯＡ（Semiconductor Optical Amplifier：半導体光増幅器）を用いることができる。 1 and 2, the light source unit 121 is provided between the resonance unit 122 and the lens 124. For the light source unit 121, for example, an SOA (Semiconductor Optical Amplifier) can be used.
　図１および図２に示されるように、共振部１２２は、レンズ１２３および光源部１２１の間に設けられている。共振部１２２には、たとえば、リング共振器を用いることができる。なお、共振部１２２には、共振部１２２の温度を変更できるように、ヒータ（不図示）が設けられている。 As shown in FIGS. 1 and 2, the resonance unit 122 is provided between the lens 123 and the light source unit 121. For the resonance unit 122, for example, a ring resonator can be used. The resonating unit 122 is provided with a heater (not shown) so that the temperature of the resonating unit 122 can be changed.
　ここで、ＰＬＣは、光源光を、光源部１２１のレンズ１２４側端面からレンズ１２４へ向けて出力するとともに、レンズ１２３へ向けて出力する。 Here, 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.
　図１および図２に示されるように、レンズ１２３は、光監視部１１０側に設けられている。レンズ１２３は、光分岐部１１１と向き合うように設けられている。レンズ１２３は、共振部１２２により出射される光を、光分岐部１１１側へ出射する。レンズ１２３には、たとえば、コリメートレンズが用いられる。 1 and FIG. 2, 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. For the lens 123, for example, a collimating lens is used.
　図１および図２に示されるように、レンズ１２４は、集光レンズ２００側に設けられている。レンズ１２４は、光源部１２１およびアイソレータ１２６の間に、設けられている。レンズ１２４は、光源部１２１により出射される光源光を、アイソレータ１２６および集光レンズ２００を介して、光ファイバー３００に入射させる。レンズ１２４には、たとえば、コリメートレンズが用いられる。 As shown in FIGS. 1 and 2, 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. For the lens 124, for example, a collimating lens is used.
　図１に示されるように、光源光出力部側温度調整部１２５は、光源光出力部１２０内であって、光源部１２１の近傍に設けられている。光源光出力部側温度調整部１２５は、ペルチェ素子１２７を用いて光源光出力部１２０内の温度を調整する。光源光出力部側温度調整部１２５には、たとえば、サーミスタを含む制御回路が用いられる。 As shown in FIG. 1, 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. For the light source light output unit side temperature adjustment unit 125, for example, a control circuit including a thermistor is used.
　図１および図２に示されるように、アイソレータ１２６は、筐体１３０のうち、光ファイバー３００側に、設けられている。アイソレータ１２６は、レンズ１２４および集光レンズ２００の間に、設けられている。アイソレータ１２６は、順方向に進む光のみを透過し、逆方向に進む光を遮断する。具体的には、アイソレータ１２６は、レンズ１２４から入射する光を、集光レンズ２００側へ向けて透過する。一方、アイソレータ１２６は、集光レンズ２００側から入射する光を遮断する。 1 and 2, 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.
　図１および図２に示されるように、筐体１３０は、光監視部１１０および光源光出力部１２０を収容する。筐体１３０の材料には、たとえば、ステンレス材のような金属部材が用いられている。筐体１３０は、複数の端子１３１および取り付け部１３２を有している。ここで、少なくとも、複数の端子１３１および取り付け部１３２は、本実施形態の必須の構成要素ではない。したがって、これらを省略して、筐体１３０を構成することもできる。 1 and 2, the housing 130 accommodates the light monitoring unit 110 and the light source light output unit 120. As 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. Here, 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.
　図１に示されるように、複数の端子１３１は、筐体１３０の外部に、筐体の外方に向けて延出するように、設けられている。筐体１３０は、電子基板（不図示）上に取り付けられる。この際、複数の端子１３１は、電子基板上に形成されたパッドに、半田付けにより、取り付けられる。 As shown in FIG. 1, 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). At this time, the plurality of terminals 131 are attached to the pads formed on the electronic substrate by soldering.
　図１に示されるように、複数の取り付け部１３２は、筐体１３０の外部であって、四隅近傍に設けられている。複数の取り付け部１３２は、電子基板に形成された取り付け孔（不図示）に、ネジ止め等により、固定される。 As shown in FIG. 1, 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.
　図１および図２に示されるように、集光レンズ２００は、筐体１３０の一端部および光ファイバー３００の間に取り付けられる。集光レンズ２００は、レンズ１２４およびアイソレータ１２６を介して出射された光源光を集光して、光ファイバー３００内に向けて出射する。 As shown in FIGS. 1 and 2, 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.
　図１および図２に示されるように、光ファイバー３００は、集光レンズ２００を介して、筐体１３０に取り付けられている。光ファイバー３００は、光モジュール１００から出射される光を、外部装置（不図示）へ伝送する。 As shown in FIGS. 1 and 2, 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).
　以上の通り、光モジュール１００の構成について、説明した。 As described above, the configuration of the optical module 100 has been described.
　次に、光モジュール１００の動作について、説明する。図３は、光モジュール１００の動作フローを示す図である。 Next, the operation of the optical module 100 will be described. FIG. 3 is a diagram illustrating an operation flow of the optical module 100.
　図３に示されるように、ＰＬＣが、光源光を出射する（Ｓ１）。具体的には、ＰＬＣは、光源光を生成し、これを前方側（レンズ１２４側）および後方側（共振部１２２側）へ出射する。 As shown in FIG. 3, 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).
　ＰＬＣから出力された光は、光源部１２１のレンズ１２４側端面から出力され、レンズ１２４およびアイソレータ１２６を介して光ファイバー３００に入射する。また、ＰＬＣから出力された光は、共振部１２２およびレンズ１２３を介して、光監視部１１０の光分岐部１１１に入射する（Ｓ２）。 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).
　光分岐部１１１が、入射光を第１の分岐光α１と第２の分岐光α２に分岐する（Ｓ３）。具体的には、光分岐部１１１は、光源光出力部１２０側から入射する光を受け取ると、この入射光を第１の分岐光α１および第２の分岐光α２に分岐して出射する。 The light branching unit 111 branches the incident light into the first branched light α1 and the second branched light α2 (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 α1 and the second branched light α2, and emits it.
　第１の分岐光α１は、フィルタ１１２に入射する（Ｓ４）。フィルタ１１２は、入射される第１の分岐光α１のうちで特定の波長帯域のみを透過して特定光α３として出射する（Ｓ５）。特定光α３は、特定光監視部１１３に入射する（Ｓ６）。特定光監視部１１３は、特定光α３を受光して、これを監視する（Ｓ７）。 The first branched light α1 is incident on the filter 112 (S4). The filter 112 transmits only the specific wavelength band of the incident first branched light α1 and emits it as the specific light α3 (S5). The specific light α3 enters the specific light monitoring unit 113 (S6). The specific light monitoring unit 113 receives the specific light α3 and monitors it (S7).
　ここで、図１および図２に示されるように、第１の分岐光α１、第２の分岐光α２および特定光α３は、同一面上に設定されている。また、第１の分岐光α１と、第２の分岐光α２は、互いに平行になるように設定されている。同様に第１の分岐光α１と、特定光α３は、互いに平行になるように設定されている。 Here, as shown in FIGS. 1 and 2, the first branched light α1, the second branched light α2, and the specific light α3 are set on the same plane. Further, the first branched light α1 and the second branched light α2 are set to be parallel to each other. Similarly, the first branched light α1 and the specific light α3 are set to be parallel to each other.
　第２の分岐光α２は、出射光監視部１１４に入射する（Ｓ８）。このとき、第２の分岐光α２は、フィルタ１１２を通らずに、出射光監視部１１４に入射する。 The second branched light α2 enters the outgoing light monitoring unit 114 (S8). At this time, the second branched light α2 enters the outgoing light monitoring unit 114 without passing through the filter 112.
　出射光監視部１１４は、第２の分岐光α２を受光して、これを監視する（Ｓ９）。 The emitted light monitoring unit 114 receives the second branched light α2 and monitors it (S9).
　光監視部１１０は、特定光α３および第２の分岐光α２に基づいて、特定光α３および第２の分岐光α２の出力値の比を算出する（Ｓ１０）。そして、光監視部５１０は、特定光監視部５１３の監視結果である特定光α３の出力値と、出射光監視部５１４の監視結果である第２の分岐光α２の出力値の比に基づいて、特定光α３波長λを検出する。 The light monitoring unit 110 calculates the ratio of the output values of the specific light α3 and the second branched light α2 based on the specific light α3 and the second branched light α2 (S10). Then, the light monitoring unit 510 is based on the ratio between the output value of the specific light α3 that is the monitoring result of the specific light monitoring unit 513 and the output value of the second branched light α2 that is the monitoring result of the emitted light monitoring unit 514. The specific light α3 wavelength λ is detected.
　そして、特定光α３の波長の検出値λが特定光α３の波長の目標値λ０に近づくように、光監視部１１０は、共振部１２２に取り付けられたヒータ（不図示）の温度を調整することで、共振部１２２のリング部分の温度を調整する。（Ｓ１１）。これにより、共振部１２２のリング径が調整され、ＰＬＣから出力される光の波長が調整される。このようなフィードバック制御により、特定光α３の波長の検出値λを特定光α３の波長の目標値λ０に近づけることができる。 Then, the light monitoring unit 110 adjusts the temperature of a heater (not shown) attached to the resonance unit 122 so that the detected value λ of the wavelength of the specific light α3 approaches the target value λ0 of the wavelength of the specific light α3. Thus, the temperature of the ring portion of the resonance unit 122 is adjusted. (S11). Thereby, the ring diameter of the resonance part 122 is adjusted, and the wavelength of the light output from PLC is adjusted. By such feedback control, the detected value λ of the wavelength of the specific light α3 can be brought close to the target value λ0 of the wavelength of the specific light α3.
　これにより、光源部１２１からアイソレータ１２６および集光レンズ２００を介して光ファイバー３００へ出射される光の波長を安定させることができる。 Thereby, 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.
　以上の通り、光モジュール１００の動作について説明した。 As described above, the operation of the optical module 100 has been described.
　なお、光監視部１１０を次のように光監視装置１１０Ａとして構成することができる。 The light monitoring unit 110 can be configured as the light monitoring device 110A as follows.
　図４は、本発明の実施の形態における光監視装置１１０Ａの構成を透過して示す上面図である。図５は、光監視装置１１０Ａの構成を示す断面図である。 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.
　図４および図５に示されるように、光監視装置１１０Ａは、光分岐部１１１と、フィルタ１１２と、特定光監視部１１３と、出射光監視部１１４と、光監視部側温度調整部１１５と、筐体１１７を備えている。 As shown in FIGS. 4 and 5, 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.
　ここで、図１および図２に示される光監視部１１０と、図４および図５に示される光監視装置１１０Ａを対比する。光監視装置１１０Ａは、筐体１１７を有し、ペルチェ素子１１６を有さない点で、光監視部１１０と相違する。 Here, 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 | casing 117 and does not have the Peltier element 116. FIG.
　筐体１１７は、光分岐部１１１と、フィルタ１１２と、特定光監視部１１３と、出射光監視部１１４と、光監視部側温度調整部１１５を、収容する。 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.
　また、筐体１１７は、開口部１１７ａを有する。光源光は、この開口部１１７ａを介して、筐体１１７内の光分岐部１１１に入射する。 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.
　なお、光監視装置１１０Ａは、たとえば、図１および図２のペルチェ素子１１６の上に、設けられる。これにより、光監視装置１１０Ａは、光監視部１１０と同様の機能を奏する。 Note that the 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.
　以上の通り、本発明の実施の形態における光モジュール１００は、光源部１２１と、光監視部１１０と、筐体１３０を備えている。光源部１２１は、光を生成して出射する。光監視部１１０は、光源部１２１により出射される光である出射光を受光する。筐体１３０は、光源部１２１および光監視部１１０を収容する。光監視部１１０は、光分岐部１１１と、フィルタ１１２と、特定光監視部１１３と、出射光監視部１１４とを有する。光分岐部１１１は、出射光を第１の分岐光α１および第２の分岐光α２に分岐して出射する。フィルタ１１２は、第１の分岐光α１のうちで特定の波長帯域のみを特定光α３として透過して出射する。特定光監視部１１３は、フィルタ１１２により透過されて出射された特定光α３を受光して監視する。出射光監視部１１４は、フィルタ１１２を介さずに第２の分岐光α２を受光して監視する。フィルタ１１２は、光分岐部１１１および特定光監視部１１３の間に配置されている。第１の分岐光α１、第２の分岐光α２および特定光α３を含む面は、特定光監視部１１３、出射光監視部１１４、光分岐部１１１およびフィルタ１１２が載置される載置面１１６ａに対して垂直な方向に延在するように、設けられている。 As described above, the optical module 100 according to the embodiment of the present invention 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 α1 and the second branched light α2, and emits it. The filter 112 transmits and emits only the specific wavelength band of the first branched light α1 as the specific light α3. The specific light monitoring unit 113 receives and monitors the specific light α3 transmitted through the filter 112 and emitted. The emitted light monitoring unit 114 receives and monitors the second branched light α2 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 α1, the second branched light α2, and the specific light α3 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.
　このように、第１の分岐光α１、第２の分岐光α２および特定光α３を含む面は、特定光監視部１１３、出射光監視部１１４、光分岐部１１１およびフィルタ１１２が載置される載置面１１６ａに対して垂直な方向（ここでは、完全に垂直な方向である必要はなく、数度（°）程度の誤差も含まれる。）に延在するように、設けられている。このため、特定光監視部１１３、出射光監視部１１４、光分岐部１１１およびフィルタ１１２が載置面１１６ａで占める面積を最も小さくすることができる。この結果、光モジュール１００によれば、載置面１１６ａ上での専有面積を低減することができる。したがって、図６および図７を用いて説明した光監視部５１０と比較して、光監視部１１０の大きさを小さくすることができる。さらに、一般的な光モジュール５００と比較して、光モジュール１００の大きさを小さくすることができる。 Thus, 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 α1, the second branched light α2, and the specific light α3. 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. As a result, according to 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.
　また、本発明の実施の形態における光モジュール１００において、特定光監視部１１３および出射光監視部１１４は、同一の基材上に設けられている。これにより、部品点数を減らすことができる。 In the optical module 100 according to the embodiment of the present invention, 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.
　また、本発明の実施の形態における光モジュール１００において、光源部１２１は、光監視部１１０と、筐体１３０に接続された光ファイバー３００とに、出射光を出射する。これにより、光源部１２１の出射光を光ファイバー３００に入射することができる。 In the optical module 100 according to the embodiment of the present invention, 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.
　本発明の実施の形態における光監視装置（光監視部１１０）は、光分岐部１１１と、フィルタ１１２と、特定光監視部１１３と、出射光監視部１１４とを有する。光分岐部１１１は、光源部１２１により出射される光である出射光を第１の分岐光α１および第２の分岐光α２に分岐して出射する。フィルタ１１２は、第１の分岐光α１のうちで特定の波長帯域のみを特定光α３として透過して出射する。特定光監視部１１３は、フィルタ１１２により透過されて出射された特定光α３を受光して監視する。出射光監視部１１４は、フィルタ１１２を介さずに第２の分岐光α２を受光して監視する。フィルタ１１２は、光分岐部１１１および特定光監視部１１３の間に配置されている。第１の分岐光α１、第２の分岐光α２および特定光α３を含む面は、特定光監視部１１３、出射光監視部１１４、光分岐部１１１およびフィルタ１１２が載置される載置面１１６ａに対して垂直な方向に延在するように、設けられている。 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 α1 and the second branched light α2, and outputs the branched light. The filter 112 transmits and emits only the specific wavelength band of the first branched light α1 as the specific light α3. The specific light monitoring unit 113 receives and monitors the specific light α3 transmitted through the filter 112 and emitted. The emitted light monitoring unit 114 receives and monitors the second branched light α2 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 α1, the second branched light α2, and the specific light α3 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.
　このような構成であっても、上述した光モジュール１００と同様の効果を奏することができる。 Even with such a configuration, the same effect as the optical module 100 described above can be obtained.
　また、本発明の実施の形態における光監視装置（光監視部１１０）において、特定光監視部１１３および出射光監視部１１４は、同一の基材上に設けられている。このような構成であっても、上述した光モジュール１００と同様の効果を奏することができる。 In the light monitoring device (light monitoring unit 110) according to the embodiment of the present invention, 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.
　以上、実施の形態をもとに本発明を説明した。実施の形態は例示であり、本発明の主旨から逸脱しない限り、上述各実施の形態に対して、さまざまな変更、増減、組合せを加えてもよい。これらの変更、増減、組合せが加えられた変形例も本発明の範囲にあることは当業者に理解されるところである。 The present invention has been described above based on the embodiments. The embodiment is an exemplification, and various modifications, increases / decreases, and combinations may be added to the above-described embodiments without departing from the gist of the present invention. It will be understood by those skilled in the art that modifications to which these changes, increases / decreases, and combinations are also within the scope of the present invention.
　この出願は、２０１７年２月２８日に出願された日本出願特願２０１７－０３５８４４を基礎とする優先権を主張し、その開示の全てをここに取り込む。 This application claims priority based on Japanese Patent Application No. 2017-035844 filed on Feb. 28, 2017, the entire disclosure of which is incorporated herein.
　１００　　光モジュール
　１１０　　光監視部
　１１０Ａ　　光監視装置
　１１１　　光分岐部
　１１２　　フィルタ
　１１３　　特定光監視部
　１１４　　出射光監視部
　１１５　　光監視部側温度調整部
　１１６　　ペルチェ素子
　１１６ａ　　載置面
　１１７　　筐体
　１２０　　光源光出力部
　１２１　　光源部
　１２２　　共振部
　１２３　　レンズ
　１２４　　レンズ
　１２５　　光源光出力部側温度調整部
　１２６　　アイソレータ
　１２７　　ペルチェ素子
　１３０　　筐体
　２００　　集光レンズ
　３００　　光ファイバー
　５００　　一般的な光モジュール
　５１０　　光監視部
　５１１　　光分岐部
　５１２　　フィルタ
　５１３　　特定光監視部
　５１４　　出射光監視部
　５１５　　光監視部側温度調整部
　５１６　　ペルチェ素子
　５２０　　光源光出力部
　５２１　　光源部
　５２２　　共振部
　５２３　　レンズ
　５２４　　レンズ
　５２５　　光源光出力部側温度調整部
　５２６　　アイソレータ
　５２７　　ペルチェ素子
　５３０　　筐体
　６００　　集光レンズ
　７００　　光ファイバー DESCRIPTION OF SYMBOLS 100 Optical module 110 Optical monitoring part 110A Optical monitoring apparatus 111 Optical branching part 112 Filter 113 Specific light monitoring part 114 Emission light monitoring part 115 Optical monitoring part side temperature control part 116 Peltier element 116a Mounting surface 117 Case 120 Light source light output part REFERENCE SIGNS LIST 121 Light source unit 122 Resonant unit 123 Lens 124 Lens 125 Light source light output unit side temperature adjustment unit 126 Isolator 127 Peltier element 130 Case 200 Condensing lens 300 Optical fiber 500 General optical module 510 Optical monitoring unit 511 Optical branching unit 512 Filter 513 Specific light monitoring unit 514 Emission light monitoring unit 515 Light monitoring unit side temperature adjustment unit 516 Peltier element 520 Light source light output unit 521 Light source unit 522 Resonance unit 523 Lens 524 Lens 525 Light source light output unit side temperature Adjustment unit 526 isolator 527 Peltier device 530 housing 600 a condenser lens 700 the optical fiber

Claims (5)

  1. 　光を生成して出射する光源部と、
    　前記光源部により出射される光である出射光を受光する光監視部と、
    　前記光源部および前記光監視部を収容する筐体を備え、
    　前記光監視部は、
    　前記出射光を第１の分岐光および第２の分岐光に分岐して出射する光分岐部と、
    　前記第１の分岐光のうちで特定の波長帯域のみを特定光として透過して出射するフィルタと、
    　前記フィルタにより透過されて出射された前記特定光を受光して監視する特定光監視部と、
    　前記フィルタを介さずに前記第２の分岐光を受光して監視する出射光監視部とを有し、
    　前記フィルタは、前記光分岐部および前記特定光監視部の間に配置されており、
    　前記第１の分岐光、前記第２の分岐光および前記特定光を含む面は、前記特定光監視部、前記出射光監視部、前記光分岐部および前記フィルタが載置される載置面に対して垂直な方向に延在するように、設けられている光モジュール。     A light source unit that generates and emits light;
    A light monitoring unit for receiving outgoing light which is light emitted by the light source unit;
    A housing for housing the light source unit and the light monitoring unit;
    The light monitoring unit
    A light branching part for branching the emitted light into a first branched light and a second branched light and emitting the branched light;
    A filter that transmits and emits only a specific wavelength band of the first branched light as the specific light;
    A specific light monitoring unit that receives and monitors the specific light transmitted and emitted by the filter;
    An outgoing light monitoring unit that receives and monitors the second branched light without passing through the filter;
    The filter is disposed between the optical branching unit and the specific light monitoring unit,
    The surface including the first branched light, the second branched light, and the specific light is a mounting surface on which the specific light monitoring unit, the emitted light monitoring unit, the light branching unit, and the filter are mounted. An optical module provided to extend in a direction perpendicular to the optical module.
  2. 　前記特定光監視部および前記出射光監視部は、同一の基材上に設けられている請求項１に記載の光モジュール。 The optical module according to claim 1, wherein the specific light monitoring unit and the emitted light monitoring unit are provided on the same base material.
  3. 　前記光源部は、前記光監視部と、前記筐体に接続された光ファイバーとに、前記出射光を出射する請求項１または２に記載の光モジュール。 3. The optical module according to claim 1, wherein the light source unit emits the emitted light to the light monitoring unit and an optical fiber connected to the housing.
  4. 　光源部により出射される光である出射光を第１の分岐光および第２の分岐光に分岐して出射する光分岐部と、
    　前記第１の分岐光のうちで特定の波長帯域のみを特定光として透過して出射するフィルタと、
    　前記フィルタにより透過されて出射された前記特定光を受光して監視する特定光監視部と、
    　前記フィルタを介さずに前記第２の分岐光を受光して監視する出射光監視部と、
    　前記第１の分岐光、前記第２の分岐光および前記特定光を含む面は、前記特定光監視部、前記出射光監視部、前記光分岐部および前記フィルタが載置される載置面に対して垂直な方向に延在するように、設けられている光監視装置。     A light branching unit that splits outgoing light, which is light emitted by the light source unit, into first branched light and second branched light, and
    A filter that transmits and emits only a specific wavelength band of the first branched light as the specific light;
    A specific light monitoring unit that receives and monitors the specific light transmitted and emitted by the filter;
    An outgoing light monitoring unit that receives and monitors the second branched light without passing through the filter;
    The surface including the first branched light, the second branched light, and the specific light is a mounting surface on which the specific light monitoring unit, the emitted light monitoring unit, the light branching unit, and the filter are mounted. An optical monitoring device provided so as to extend in a direction perpendicular to the vertical direction.
  5. 　前記特定光監視部および前記出射光監視部は、同一の基材上に設けられている請求項４に記載の光監視装置。 The light monitoring device according to claim 4, wherein the specific light monitoring unit and the emitted light monitoring unit are provided on the same base material.
PCT/JP2018/005876 2017-02-28 2018-02-20 Optical module and optical monitoring device WO2018159373A1 (en)

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JP2017035844 2017-02-28

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002237651A (en) * 2000-12-06 2002-08-23 Mitsubishi Electric Corp Wavelength monitor device and semiconductor laser
US7009716B2 (en) * 2003-08-26 2006-03-07 Electronics And Telecommunications Research Institute System for monitoring optical output/wavelength
JP2008053555A (en) * 2006-08-25 2008-03-06 Fujitsu Ltd Wavelength locker
JP2008227170A (en) * 2007-03-13 2008-09-25 Nec Electronics Corp Optical module
JP2010232337A (en) * 2009-03-26 2010-10-14 Fujitsu Optical Components Ltd Light source device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002237651A (en) * 2000-12-06 2002-08-23 Mitsubishi Electric Corp Wavelength monitor device and semiconductor laser
US7009716B2 (en) * 2003-08-26 2006-03-07 Electronics And Telecommunications Research Institute System for monitoring optical output/wavelength
JP2008053555A (en) * 2006-08-25 2008-03-06 Fujitsu Ltd Wavelength locker
JP2008227170A (en) * 2007-03-13 2008-09-25 Nec Electronics Corp Optical module
JP2010232337A (en) * 2009-03-26 2010-10-14 Fujitsu Optical Components Ltd Light source device

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