JP7284431B2 - 光送信器 - Google Patents
光送信器 Download PDFInfo
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- JP7284431B2 JP7284431B2 JP2021548094A JP2021548094A JP7284431B2 JP 7284431 B2 JP7284431 B2 JP 7284431B2 JP 2021548094 A JP2021548094 A JP 2021548094A JP 2021548094 A JP2021548094 A JP 2021548094A JP 7284431 B2 JP7284431 B2 JP 7284431B2
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- soa
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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
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/12—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region the resonator having a periodic structure, e.g. in distributed feedback [DFB] lasers
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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
- H01S5/026—Monolithically integrated components, e.g. waveguides, monitoring photo-detectors, drivers
- H01S5/0265—Intensity modulators
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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
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
- H01S5/0601—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium comprising an absorbing region
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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
- H01S5/50—Amplifier structures not provided for in groups H01S5/02 - H01S5/30
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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
- H01S5/026—Monolithically integrated components, e.g. waveguides, monitoring photo-detectors, drivers
-
- 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
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/1003—Waveguide having a modified shape along the axis, e.g. branched, curved, tapered, voids
- H01S5/1014—Tapered waveguide, e.g. spotsize converter
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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
- H01S5/20—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers
- H01S5/22—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers having a ridge or stripe structure
- H01S5/2205—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers having a ridge or stripe structure comprising special burying or current confinement layers
- H01S5/2222—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers having a ridge or stripe structure comprising special burying or current confinement layers having special electric properties
- H01S5/2224—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers having a ridge or stripe structure comprising special burying or current confinement layers having special electric properties semi-insulating semiconductors
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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
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/32—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures
- H01S5/3211—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures characterised by special cladding layers, e.g. details on band-discontinuities
- H01S5/3213—Structure or shape of the active region; Materials used for the active region comprising PN junctions, e.g. hetero- or double- heterostructures characterised by special cladding layers, e.g. details on band-discontinuities asymmetric clading layers
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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
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/34—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers
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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
- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/34—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers
- H01S5/343—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser
- H01S5/34306—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser emitting light at a wavelength longer than 1000nm, e.g. InP based 1300 and 1500nm lasers
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Semiconductor Lasers (AREA)
Description
式(1)において、Γは光利得を有する活性層(MQW)への光閉じ込め係数、dおよびwはそれぞれ活性層の厚さおよび幅、aは微分利得、τsはキャリア寿命である。一般的なSOAでは、高出力特性を得るために、式(1)を考慮してSOA内部の層構造を調整して、右辺の左側の項(dw/Γ)を大きくすることによって、飽和光出力Psatを拡大し、AXELを高出力化できる。すなわち、SOAにおいて飽和光出力Psatを高出力化するには、光閉じ込め係数Γを抑制して(dw/Γを大きく)、単位長さあたりの光利得が小さく、活性層体積(dwに相当)が大きい導波路構造とするのが望ましい。
Claims (4)
- 基板上に、
多重量子井戸を有する活性領域を有する分布帰還型(DFB)レーザと、
前記DFBレーザとは異なる組成の多重量子井戸を有する吸収領域を含み、前記DFBレーザの発振光を変調する電界吸収型(EA)変調器と、
前記DFBレーザと同一組成の活性領域を有し、前記EA変調器からの信号光を増幅する半導体光増幅器(SOA)とがモノリシックに集積された光送信器であって、
前記SOAの光導波方向に垂直な断面におけるコア層の幅が、前記DFBレーザのコア層の幅より小さいことを特徴とする光送信器。 - 前記DFBレーザおよび前記SOAの光導波構造は、同一の層構造および同一組成を有すること
を特徴とする請求項1に記載の光送信器。 - 前記SOAの前記コア層の前記幅は、0.8μm以上、2.0μm以下であることを特徴とする請求項2に記載の光送信器。
- 前記DFBレーザおよび前記SOAの光導波構造は、一括プロセスによって形成されたことを特徴とする請求項1、2または3に記載の光送信器。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2019/037958 WO2021059449A1 (ja) | 2019-09-26 | 2019-09-26 | 光送信器 |
Publications (2)
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JPWO2021059449A1 JPWO2021059449A1 (ja) | 2021-04-01 |
JP7284431B2 true JP7284431B2 (ja) | 2023-05-31 |
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JP2021548094A Active JP7284431B2 (ja) | 2019-09-26 | 2019-09-26 | 光送信器 |
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US (1) | US20220352692A1 (ja) |
JP (1) | JP7284431B2 (ja) |
WO (1) | WO2021059449A1 (ja) |
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WO2023228346A1 (ja) * | 2022-05-26 | 2023-11-30 | 三菱電機株式会社 | 半導体光集積素子および製造方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002368327A (ja) | 2001-06-05 | 2002-12-20 | Furukawa Electric Co Ltd:The | 半導体レーザ装置 |
JP2003069162A (ja) | 2001-08-29 | 2003-03-07 | Nippon Telegr & Teleph Corp <Ntt> | 光増幅器 |
WO2016063605A1 (ja) | 2014-10-23 | 2016-04-28 | ソニー株式会社 | 光半導体素子及びレーザ装置組立体 |
US20170179679A1 (en) | 2015-12-16 | 2017-06-22 | Electronics And Telecommunications Research Institute | Semiconductor optical device |
JP2018074098A (ja) | 2016-11-04 | 2018-05-10 | 日本電信電話株式会社 | 半導体光集積回路 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US5175643A (en) * | 1991-09-30 | 1992-12-29 | Xerox Corporation | Monolithic integrated master oscillator power amplifier |
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2019
- 2019-09-26 US US17/760,844 patent/US20220352692A1/en active Pending
- 2019-09-26 WO PCT/JP2019/037958 patent/WO2021059449A1/ja active Application Filing
- 2019-09-26 JP JP2021548094A patent/JP7284431B2/ja active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002368327A (ja) | 2001-06-05 | 2002-12-20 | Furukawa Electric Co Ltd:The | 半導体レーザ装置 |
JP2003069162A (ja) | 2001-08-29 | 2003-03-07 | Nippon Telegr & Teleph Corp <Ntt> | 光増幅器 |
WO2016063605A1 (ja) | 2014-10-23 | 2016-04-28 | ソニー株式会社 | 光半導体素子及びレーザ装置組立体 |
US20170179679A1 (en) | 2015-12-16 | 2017-06-22 | Electronics And Telecommunications Research Institute | Semiconductor optical device |
JP2018074098A (ja) | 2016-11-04 | 2018-05-10 | 日本電信電話株式会社 | 半導体光集積回路 |
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JPWO2021059449A1 (ja) | 2021-04-01 |
US20220352692A1 (en) | 2022-11-03 |
WO2021059449A1 (ja) | 2021-04-01 |
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