JP2019211583A - 光デバイス - Google Patents
光デバイス Download PDFInfo
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- JP2019211583A JP2019211583A JP2018106540A JP2018106540A JP2019211583A JP 2019211583 A JP2019211583 A JP 2019211583A JP 2018106540 A JP2018106540 A JP 2018106540A JP 2018106540 A JP2018106540 A JP 2018106540A JP 2019211583 A JP2019211583 A JP 2019211583A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 244
- 230000010287 polarization Effects 0.000 claims abstract description 140
- 238000013459 approach Methods 0.000 claims description 6
- 230000006866 deterioration Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 18
- 238000000034 method Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/21—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference
- G02F1/225—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference in an optical waveguide structure
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/286—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
- G02B6/2808—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using a mixing element which evenly distributes an input signal over a number of outputs
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
- G02B6/2821—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using lateral coupling between contiguous fibres to split or combine optical signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/06—Polarisation multiplex systems
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/21—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour by interference
- G02F1/212—Mach-Zehnder type
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Optical Integrated Circuits (AREA)
Abstract
Description
ただし、λ:光の波長、Pp1(λ):偏波合成器16から出力される偏波多重光に含まれる第1の分岐光の光パワー、Pp2(λ):偏波合成器16から出力される偏波多重光に含まれる第2の分岐光の光パワー
ただし、λ:光の波長、Pc1(λ):光カプラ12から出力される第1の分岐光の光パワー、Pc2(λ):光カプラ12から出力される第2の分岐光の光パワー
なお、上記実施例では、光カプラ12が非対称型の方向性結合器である例を示したが、開示の技術はこれに限定されない。例えば、光カプラは、非対称型のマッハツェンダ干渉計であってもよい。図8は、変形例における光カプラ32の構成例を示す図である。
上述した光デバイス1は、例えば光信号を送受信する光送受信モジュールに適用することが可能である。図9は、上記実施例及び変形例に係る光デバイス1が実装された光送受信モジュール100の構成例を示す図である。図9に示すように、光送受信モジュール100は、LD(Laser Diode)101と、光デバイス1と、ドライバ103と、受信回路104と、DSP(Digital Signal Processor)105とを有する。また、受信回路104は、TIA(Transimpedance Amplifier)104aを有する。ドライバ103から出力されるRF信号によって光デバイス1の光変調器13,14が駆動され、光デバイス1は、LD101からの入力光を分岐して得られる第1の分岐光及び第2の分岐光を変調及び偏波多重し、得られた偏波多重光を光信号として送出する。
12、32 光カプラ
15 偏波変換器
16 偏波合成器
Claims (5)
- 入力光を分岐して第1の分岐光及び第2の分岐光を出力する光カプラと、
前記光カプラから出力される前記第2の分岐光の偏波方向を変換する偏波変換器と、
前記光カプラから出力される前記第1の分岐光と前記偏波変換器によって偏波方向が変換された前記第2の分岐光とを合成して偏波多重光を出力する偏波合成器と、
を有し、
前記光カプラは、前記偏波多重光に含まれる前記第2の分岐光に関する前記偏波合成器の波長特性を打ち消す波長特性を有することを特徴とする光デバイス。 - 前記偏波合成器は、前記偏波多重光に含まれる前記第2の分岐光に関して、光の波長が前記偏波多重光に割り当てられた所定の波長帯域の端部に近づくほど光パワーが低下する波長特性を有し、
前記光カプラは、前記光カプラから出力される前記第2の分岐光に関して、光の波長が前記所定の波長帯域の端部に近づくほど光パワーが増加する波長特性を有することを特徴とする請求項1に記載の光デバイス。 - 前記光カプラの波長特性は、前記光カプラから出力される前記第1の分岐光及び前記第2の分岐光の光パワーの比が、前記偏波合成器から出力される前記偏波多重光に含まれる前記第1の分岐光及び前記第2の分岐光の光パワーの比の逆数に等しくなるように、決定されることを特徴とする請求項1又は2に記載の光デバイス。
- 前記光カプラは、幅が異なる2つの光導波路を有する非対称型の方向性結合器であることを特徴とする請求項1〜3のいずれか一つに記載の光デバイス。
- 前記光カプラは、幅が同一であり且つ長さが異なる2つの光導波路を有する非対称型のマッハツェンダ干渉計であることを特徴とする請求項1〜3のいずれか一つに記載の光デバイス。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2018106540A JP7106996B2 (ja) | 2018-06-01 | 2018-06-01 | 光デバイス |
US16/369,259 US10560213B2 (en) | 2014-06-01 | 2019-03-29 | Optical device |
Applications Claiming Priority (1)
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JP2018106540A JP7106996B2 (ja) | 2018-06-01 | 2018-06-01 | 光デバイス |
Publications (2)
Publication Number | Publication Date |
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JP2019211583A true JP2019211583A (ja) | 2019-12-12 |
JP7106996B2 JP7106996B2 (ja) | 2022-07-27 |
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JP2018106540A Active JP7106996B2 (ja) | 2014-06-01 | 2018-06-01 | 光デバイス |
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US (1) | US10560213B2 (ja) |
JP (1) | JP7106996B2 (ja) |
Citations (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4669815A (en) * | 1985-08-12 | 1987-06-02 | Trw Inc. | Integrated optical waveguide multiplexer/demultiplexer |
JPH02287408A (ja) * | 1989-04-28 | 1990-11-27 | Nippon Telegr & Teleph Corp <Ntt> | 導波型光分岐素子 |
JPH055811A (ja) * | 1991-06-28 | 1993-01-14 | Nippon Telegr & Teleph Corp <Ntt> | 導波路形光結合器 |
JPH06130238A (ja) * | 1992-09-07 | 1994-05-13 | Nippon Telegr & Teleph Corp <Ntt> | 光分波回路 |
JPH06508933A (ja) * | 1991-04-05 | 1994-10-06 | ポリヴァロー、ソシエテ・アン・コマンディトウ | シンプルモード光導波路用波長平坦化2×2分岐子およびその製造方法 |
US5694496A (en) * | 1993-05-07 | 1997-12-02 | Nippon Telegraph And Telephone Corporation | Optical waveplate and A method of manufacturing the optical waveplate |
JP2002026818A (ja) * | 2000-05-31 | 2002-01-25 | Lucent Technol Inc | 誘導ブリュアン散乱を抑圧するために偏波多重化を用いる光ファイバ伝送システム |
JP2006065089A (ja) * | 2004-08-27 | 2006-03-09 | Nippon Telegr & Teleph Corp <Ntt> | 光方向性結合器および波長無依存カプラ |
JP2010139572A (ja) * | 2008-12-09 | 2010-06-24 | Fujitsu Ltd | 偏波変換デバイス及び偏波多重変調器 |
WO2010140363A1 (ja) * | 2009-06-02 | 2010-12-09 | 日本電信電話株式会社 | 広帯域干渉計型偏波合成分離器 |
JP2011034057A (ja) * | 2009-07-10 | 2011-02-17 | Nippon Telegr & Teleph Corp <Ntt> | 光変調器 |
US20130094797A1 (en) * | 2011-10-13 | 2013-04-18 | Finisar Corporation | Optical Transmitter With Tunable Chirp |
JP2013195643A (ja) * | 2012-03-19 | 2013-09-30 | Fujitsu Optical Components Ltd | 光変調器 |
JP2015045790A (ja) * | 2013-08-29 | 2015-03-12 | 富士通オプティカルコンポーネンツ株式会社 | 光モジュールおよび光送信機 |
WO2016052343A1 (ja) * | 2014-09-30 | 2016-04-07 | 株式会社フジクラ | 基板型光導波路素子及び基板型光導波路素子の製造方法 |
US20170264389A1 (en) * | 2014-12-02 | 2017-09-14 | Xieon Networks S.À.R.L. | Spectral inversion detection for polarization-division multiplexed optical transmission |
JP2018040946A (ja) * | 2016-09-07 | 2018-03-15 | 日本電信電話株式会社 | 光モニタ回路 |
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JP6508933B2 (ja) | 2014-12-17 | 2019-05-08 | 株式会社トーキン | 電磁干渉抑制体及び回路基板 |
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- 2018-06-01 JP JP2018106540A patent/JP7106996B2/ja active Active
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- 2019-03-29 US US16/369,259 patent/US10560213B2/en active Active
Patent Citations (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4669815A (en) * | 1985-08-12 | 1987-06-02 | Trw Inc. | Integrated optical waveguide multiplexer/demultiplexer |
JPH02287408A (ja) * | 1989-04-28 | 1990-11-27 | Nippon Telegr & Teleph Corp <Ntt> | 導波型光分岐素子 |
JPH06508933A (ja) * | 1991-04-05 | 1994-10-06 | ポリヴァロー、ソシエテ・アン・コマンディトウ | シンプルモード光導波路用波長平坦化2×2分岐子およびその製造方法 |
JPH055811A (ja) * | 1991-06-28 | 1993-01-14 | Nippon Telegr & Teleph Corp <Ntt> | 導波路形光結合器 |
JPH06130238A (ja) * | 1992-09-07 | 1994-05-13 | Nippon Telegr & Teleph Corp <Ntt> | 光分波回路 |
US5694496A (en) * | 1993-05-07 | 1997-12-02 | Nippon Telegraph And Telephone Corporation | Optical waveplate and A method of manufacturing the optical waveplate |
JP2002026818A (ja) * | 2000-05-31 | 2002-01-25 | Lucent Technol Inc | 誘導ブリュアン散乱を抑圧するために偏波多重化を用いる光ファイバ伝送システム |
JP2006065089A (ja) * | 2004-08-27 | 2006-03-09 | Nippon Telegr & Teleph Corp <Ntt> | 光方向性結合器および波長無依存カプラ |
JP2010139572A (ja) * | 2008-12-09 | 2010-06-24 | Fujitsu Ltd | 偏波変換デバイス及び偏波多重変調器 |
WO2010140363A1 (ja) * | 2009-06-02 | 2010-12-09 | 日本電信電話株式会社 | 広帯域干渉計型偏波合成分離器 |
JP2011034057A (ja) * | 2009-07-10 | 2011-02-17 | Nippon Telegr & Teleph Corp <Ntt> | 光変調器 |
US20130094797A1 (en) * | 2011-10-13 | 2013-04-18 | Finisar Corporation | Optical Transmitter With Tunable Chirp |
JP2013195643A (ja) * | 2012-03-19 | 2013-09-30 | Fujitsu Optical Components Ltd | 光変調器 |
JP2015045790A (ja) * | 2013-08-29 | 2015-03-12 | 富士通オプティカルコンポーネンツ株式会社 | 光モジュールおよび光送信機 |
WO2016052343A1 (ja) * | 2014-09-30 | 2016-04-07 | 株式会社フジクラ | 基板型光導波路素子及び基板型光導波路素子の製造方法 |
US20170264389A1 (en) * | 2014-12-02 | 2017-09-14 | Xieon Networks S.À.R.L. | Spectral inversion detection for polarization-division multiplexed optical transmission |
JP2018040946A (ja) * | 2016-09-07 | 2018-03-15 | 日本電信電話株式会社 | 光モニタ回路 |
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JP7106996B2 (ja) | 2022-07-27 |
US10560213B2 (en) | 2020-02-11 |
US20190372699A1 (en) | 2019-12-05 |
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