JPWO2020162451A1 - 光機能素子およびレーザ素子 - Google Patents
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- 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
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- 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
- H01S5/14—External cavity lasers
- H01S5/141—External cavity lasers using a wavelength selective device, e.g. a grating or etalon
- H01S5/142—External cavity lasers using a wavelength selective device, e.g. a grating or etalon which comprises an additional resonator
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- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/12007—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind forming wavelength selective elements, e.g. multiplexer, demultiplexer
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- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
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- 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
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29331—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by evanescent wave coupling
- G02B6/29335—Evanescent coupling to a resonator cavity, i.e. between a waveguide mode and a resonant mode of the cavity
- G02B6/29338—Loop resonators
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- 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
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29344—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by modal interference or beating, i.e. of transverse modes, e.g. zero-gap directional coupler, MMI
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- 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
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- 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
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- 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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- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
- H01S5/0607—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying physical parameters other than the potential of the electrodes, e.g. by an electric or magnetic field, mechanical deformation, pressure, light, temperature
- H01S5/0612—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium by varying physical parameters other than the potential of the electrodes, e.g. by an electric or magnetic field, mechanical deformation, pressure, light, temperature controlled by temperature
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- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
- H01S5/065—Mode locking; Mode suppression; Mode selection ; Self pulsating
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- 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
- H01S5/1206—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 having a non constant or multiplicity of periods
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- 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
- H01S5/125—Distributed Bragg reflector [DBR] lasers
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- Semiconductor Lasers (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
Description
図1は、実施形態1に係る光機能素子の模式図である。この光機能素子10は、基板S上に形成された以下の導波路:第1光カプラである光カプラ1と、第2光カプラである光カプラ2と、光入出力導波路3、4、5、6と、第1円弧状導波路である円弧状導波路7と、第2円弧状導波路である円弧状導波路8と、を備えている。
図7は、実施形態2に係るレーザ素子の模式図である。このレーザ素子100は、特許文献1に開示されるようなバーニア効果を利用した波長可変型のレーザ素子として構成されている。レーザ素子100は、共通の基板S上に集積された光機能素子10、20、30、40を備えている。なお、図7では、後述する各ヒータや電極、および各ヒータや電極に電流を供給するための配線や電極パッドは図示を省略している。
1a、1b、1d、1e 入出力ポート
1c MMI導波路部
1ca、1cb 端部
1cc、1cd テーパ部
1ce 等幅部
3、4、5、6 光入出力導波路
7、8 円弧状導波路
10、20、30、40 光機能素子
100 レーザ素子
L1 実線
L2 破線
S 基板
Claims (7)
- 長手方向において対向する第1端部および第2端部を有する多モード干渉導波路部と、前記第1端部において幅方向に並列する2つの第1入出力ポートと、前記第2端部において幅方向に並列する2つの第2入出力ポートと、を有する多モード干渉導波路型の第1光カプラと、
長手方向において第1端部および第2端部を有する多モード干渉導波路部と、前記第1端部において幅方向に並列する2つの第1入出力ポートと、前記第2端部において幅方向に並列する2つの第2入出力ポートと、を有する多モード干渉導波路型の第2光カプラと、
前記第1光カプラの前記第1入出力ポートの一方と、前記第2光カプラの前記第1入出力ポートの一方と、を光学的に接続する第1円弧状導波路と、
前記第1光カプラの前記第2入出力ポートの一方と、前記第2光カプラの前記第2入出力ポートの一方と、を光学的に接続する第2円弧状導波路と、
を備え、前記第1光カプラ、前記第2光カプラ、前記第1円弧状導波路、および前記第2円弧状導波路はリング共振器を構成しており、
前記第1光カプラおよび前記第2光カプラの多モード干渉導波路部は、それぞれ、前記第1端部または前記第2端部での幅よりも、長手方向における平均的な幅が狭い狭幅部を有する
ことを特徴とする光機能素子。 - 前記第1光カプラおよび前記第2光カプラの分岐比は0%より大きく50%未満、または50%より大きく100%未満である
ことを特徴とする請求項1または2に記載の光機能素子。 - 前記狭幅部は、長手方向において幅が連続的または多段階的に変化する
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機能素子。 - 前記狭幅部の幅が、長手方向において略一定であり、前記第1端部または前記第2端部の幅の25%以上100%未満である
ことを特徴とする請求項1〜4のいずれか一つに記載の光機能素子。 - 前記狭幅部の長さが前記多モード干渉導波路部の長さの10%以上である
ことを特徴とする請求項5に記載の光機能素子。 - 請求項1〜6のいずれか一つに記載の光機能素子を備える
ことを特徴とするレーザ素子。
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JP2019019541 | 2019-02-06 | ||
JP2019019541 | 2019-02-06 | ||
PCT/JP2020/004120 WO2020162451A1 (ja) | 2019-02-06 | 2020-02-04 | 光機能素子およびレーザ素子 |
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US (1) | US20210367401A1 (ja) |
JP (1) | JPWO2020162451A1 (ja) |
CN (1) | CN113474955A (ja) |
WO (1) | WO2020162451A1 (ja) |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2000241644A (ja) * | 1998-12-22 | 2000-09-08 | Nippon Telegr & Teleph Corp <Ntt> | 多モード干渉光カプラ |
JP2002514783A (ja) * | 1998-05-08 | 2002-05-21 | ザ トラスティーズ オブ コロンビア ユニヴァーシティ イン ザ シティ オブ ニューヨーク | 小型にした干渉に基づくマルチモードカップラ |
US20030147432A1 (en) * | 2002-02-06 | 2003-08-07 | Jds Uniphase Corporation | Widely tunable laser |
JP2003337236A (ja) * | 2002-05-17 | 2003-11-28 | Nec Corp | 光リング共振器、光導波路デバイスならびに光リング共振器の製造方法 |
JP2006284791A (ja) * | 2005-03-31 | 2006-10-19 | Oki Electric Ind Co Ltd | マルチモード干渉光カプラ |
JP2008066318A (ja) * | 2006-09-04 | 2008-03-21 | Nippon Telegr & Teleph Corp <Ntt> | 半導体波長可変レーザ |
JP2011197069A (ja) * | 2010-03-17 | 2011-10-06 | Fujitsu Ltd | 光導波路素子及びそのような光導波路素子を備えた光受信機 |
JP2013093627A (ja) * | 2013-02-18 | 2013-05-16 | Nippon Telegr & Teleph Corp <Ntt> | 半導体波長可変レーザ |
JP2013168440A (ja) * | 2012-02-14 | 2013-08-29 | Japan Oclaro Inc | 半導体光変調素子及び光モジュール |
US20150207291A1 (en) * | 2014-01-20 | 2015-07-23 | Rockley Photonics Limited | Tunable soi laser |
Family Cites Families (2)
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US6792172B1 (en) * | 1998-05-08 | 2004-09-14 | The Trustees Of Columbia University Of The City Of New York | Reduced size multimode interference based coupler |
CN105759357B (zh) * | 2016-05-13 | 2019-09-03 | 东南大学 | 一种基于槽式波导的紧凑式模阶数转换器 |
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2020
- 2020-02-04 WO PCT/JP2020/004120 patent/WO2020162451A1/ja active Application Filing
- 2020-02-04 JP JP2020571213A patent/JPWO2020162451A1/ja active Pending
- 2020-02-04 CN CN202080012607.5A patent/CN113474955A/zh active Pending
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- 2021-08-03 US US17/392,899 patent/US20210367401A1/en active Pending
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2002514783A (ja) * | 1998-05-08 | 2002-05-21 | ザ トラスティーズ オブ コロンビア ユニヴァーシティ イン ザ シティ オブ ニューヨーク | 小型にした干渉に基づくマルチモードカップラ |
JP2000241644A (ja) * | 1998-12-22 | 2000-09-08 | Nippon Telegr & Teleph Corp <Ntt> | 多モード干渉光カプラ |
US20030147432A1 (en) * | 2002-02-06 | 2003-08-07 | Jds Uniphase Corporation | Widely tunable laser |
JP2003337236A (ja) * | 2002-05-17 | 2003-11-28 | Nec Corp | 光リング共振器、光導波路デバイスならびに光リング共振器の製造方法 |
JP2006284791A (ja) * | 2005-03-31 | 2006-10-19 | Oki Electric Ind Co Ltd | マルチモード干渉光カプラ |
JP2008066318A (ja) * | 2006-09-04 | 2008-03-21 | Nippon Telegr & Teleph Corp <Ntt> | 半導体波長可変レーザ |
JP2011197069A (ja) * | 2010-03-17 | 2011-10-06 | Fujitsu Ltd | 光導波路素子及びそのような光導波路素子を備えた光受信機 |
JP2013168440A (ja) * | 2012-02-14 | 2013-08-29 | Japan Oclaro Inc | 半導体光変調素子及び光モジュール |
JP2013093627A (ja) * | 2013-02-18 | 2013-05-16 | Nippon Telegr & Teleph Corp <Ntt> | 半導体波長可変レーザ |
US20150207291A1 (en) * | 2014-01-20 | 2015-07-23 | Rockley Photonics Limited | Tunable soi laser |
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CN113474955A (zh) | 2021-10-01 |
US20210367401A1 (en) | 2021-11-25 |
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