JP2007114809A - 光偏向器を備えた波長可変逆多重化器および波長可変レーザ - Google Patents
光偏向器を備えた波長可変逆多重化器および波長可変レーザ Download PDFInfo
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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
- G02B6/29379—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 characterised by the function or use of the complete device
- G02B6/29395—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 characterised by the function or use of the complete device configurable, e.g. tunable or reconfigurable
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- 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
- 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
- G02B6/12009—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 comprising arrayed waveguide grating [AWG] devices, i.e. with a phased array of waveguides
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- 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
- G02B6/293—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
- G02B6/29304—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 diffraction, e.g. grating
- G02B6/29305—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 diffraction, e.g. grating as bulk element, i.e. free space arrangement external to a light guide
- G02B6/2931—Diffractive element operating in reflection
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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
- G02B6/29304—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 diffraction, e.g. grating
- G02B6/29305—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 diffraction, e.g. grating as bulk element, i.e. free space arrangement external to a light guide
- G02B6/29313—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 diffraction, e.g. grating as bulk element, i.e. free space arrangement external to a light guide characterised by means for controlling the position or direction of light incident to or leaving the diffractive element, e.g. for varying the wavelength response
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- 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
- G02B6/293—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
- G02B6/29379—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 characterised by the function or use of the complete device
- G02B6/2938—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 characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM
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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
- H01S5/14—External cavity lasers
- H01S5/141—External cavity lasers using a wavelength selective device, e.g. a grating or etalon
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—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
- G02B2006/12083—Constructional arrangements
- G02B2006/12116—Polariser; Birefringent
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- H—ELECTRICITY
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- 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
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
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- H—ELECTRICITY
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- 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
- H01S5/0225—Out-coupling of light
- H01S5/02251—Out-coupling of light using optical fibres
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- H—ELECTRICITY
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- H01S5/00—Semiconductor lasers
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
- H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar
- H01S5/4031—Edge-emitting structures
- H01S5/4062—Edge-emitting structures with an external cavity or using internal filters, e.g. Talbot filters
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- H—ELECTRICITY
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- H01S5/00—Semiconductor lasers
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
- H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar
- H01S5/4087—Array arrangements, e.g. constituted by discrete laser diodes or laser bar emitting more than one wavelength
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Abstract
【解決手段】お互い異なる多数の波長を有する多数の光が導波される入力導波路と、入力導波路を介して伝達された光を、放射状に分散する光に偏向させる光偏向器であって、第1の有効屈折率を有する周辺領域と、前記第1の有効屈折率とは異なる第2の有効屈折率を持つ所定形状の偏向パターン領域とが境界を成して構成される光偏向器と、前記偏向された光を波長ごとに分離して反射する回折格子と、前記回折格子を介して回折した光を選択して出力する出力導波路とを含み、前記放射状に分散する光は、第2の有効屈折率に応じて変わる所定の軌跡上の特定点から出発して進むことを特徴とする波長可変逆多重化器を提供する。
【選択図】図5
Description
光通信システムにおいて、様々な波長のビームを一つの位置に集束させる機能(多重化)、任意のビームを波長に応じて特定の位置に分配させる機能(逆多重化)は、WDM(Wavelength Division Multiplexing)を基盤とする光システムでは必須である。
最近、電子商取引、VOD、画像会議といった新しいマルチメディアの出現とHDTV、LAN、CATVなどといった従来のデータ通信の発達に伴い、情報容量が急増している。超高速情報通信網事業者は、莫大なコストと時間がかかる新規の光ファイバを設置する代わりに、既存の光ファイバの帯域幅を極大化するWDM(Wavelength Division Multiplexing)伝送方式を使用することにより、伝送効率を極大化する方式を採用している。
次に、図2を参照して本発明の第1実施例に係る波長可変逆多重化器を詳細に説明する。図2は本発明の第1実施例に係る波長可変逆多重化器の構成図である。
以下、図5を参照して本発明の第2実施例に係る波長可変逆多重化器について説明する。図5は本発明の第2実施例に係る配列導波路回折格子の構造を用いた波長可変逆多重化器の構造図である。
以下、図6を参照して本発明の第3実施例に係る波長可変レーザを説明する。図6は第3実施例に係る波長可変レーザの概略構成図である。
110 入力導波路
120 出力導波路
130 回折格子
140 光偏向器
141 周辺領域
142 偏向パターン領域
143 円形パターン領域
1100 n金属層
1110 下部クラッド層
1120 コア層
1130 上部クラッド層
1140 上部クラッド層
1170 p金属層
210 入力導波路
220 出力導波路
240 光偏向器
250 入力結合器
260 出力結合器
270 円形導波路
510 光増幅器
520 凹回折格子
530 光偏向器
Claims (4)
- お互い異なる多数の波長を有する多数の光が導波される入力導波路と、
前記入力導波路を介して伝達された光を、放射状に分散する光に偏向させる光偏向器であって、第1の有効屈折率を有する周辺領域と、前記第1の有効屈折率とは異なる第2の有効屈折率を持つ所定形状の偏向パターン領域とが境界を成して構成される光偏向器と、
前記偏向された光を波長ごとに分離して反射する回折格子と、
前記回折格子を介して回折された光をそれぞれ選択して出力する複数の出力導波路とを備え、
前記放射状に分散する光は、第2の有効屈折率に応じて変わる所定の軌跡上の特定点が仮想的に変化することによって波長可変が行なわれ、前記偏向された光は、前記回折格子に入射する入射角を変えることを特徴とする波長可変逆多重化器。 - 前記光偏向器は、下部クラッド層、上部クラッド層およびコア層を含むことを特徴とする請求項1に記載の波長可変逆多重化器。
- 前記周辺領域と所定の偏向パターン領域は各領域のコア層に印加される電流差によって区分されることを特徴とする請求項1に記載の波長可変逆多重化器。
- 前記軌跡は、円形、放物線および直線の中のいずれか一つであることを特徴とする請求項1に記載の波長可変逆多重化器。
Applications Claiming Priority (1)
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KR1020040105679A KR100679241B1 (ko) | 2004-12-14 | 2004-12-14 | 광 편향기를 구비한 파장가변 다중화기, 역다중화기 및 파장가변 레이저 |
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JP2005304711A Division JP4477567B2 (ja) | 2004-12-14 | 2005-10-19 | 光偏向器を備えた波長可変逆多重化器および波長可変レーザ |
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JP2007114809A true JP2007114809A (ja) | 2007-05-10 |
JP4610569B2 JP4610569B2 (ja) | 2011-01-12 |
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JP2005304711A Active JP4477567B2 (ja) | 2004-12-14 | 2005-10-19 | 光偏向器を備えた波長可変逆多重化器および波長可変レーザ |
JP2007018287A Expired - Fee Related JP4610569B2 (ja) | 2004-12-14 | 2007-01-29 | 光偏向器を備えた波長可変逆多重化器 |
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US (1) | US7136553B2 (ja) |
EP (1) | EP1672398B1 (ja) |
JP (2) | JP4477567B2 (ja) |
KR (1) | KR100679241B1 (ja) |
AT (1) | ATE477511T1 (ja) |
DE (1) | DE602005022818D1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2014010037A1 (ja) * | 2012-07-11 | 2014-01-16 | 株式会社日立製作所 | 波長合分波器、光モジュールおよびそれを用いたサーバ |
US8774642B2 (en) | 2011-06-29 | 2014-07-08 | Fujitsu Limited | Optical transmission apparatus and optical interleaving control method |
JP2018085475A (ja) * | 2016-11-25 | 2018-05-31 | 富士通株式会社 | 多波長レーザ装置及び波長多重通信システム |
Families Citing this family (15)
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KR100608946B1 (ko) * | 2004-10-20 | 2006-08-03 | 광주과학기술원 | 자체잠김된 페브리-페롯 레이저 다이오드를 이용한 파장분할다중 방식의 수동형 광통신망과, 이에 사용되는 지역 기지국 및 그 제어 방법 |
KR100759820B1 (ko) * | 2006-07-18 | 2007-09-18 | 한국전자통신연구원 | 긴 공동 단일모드 레이저 다이오드 |
KR100863533B1 (ko) * | 2007-03-29 | 2008-10-15 | 주식회사 하이닉스반도체 | 반도체 장치 및 그 구동방법 |
KR100899808B1 (ko) * | 2007-11-01 | 2009-05-28 | 한국전자통신연구원 | 파장 선택 스위치 |
KR20090065160A (ko) * | 2007-12-17 | 2009-06-22 | 한국전자통신연구원 | 파장 선택 스위치 |
US8995836B2 (en) * | 2010-07-13 | 2015-03-31 | Futurewei Technologies, Inc. | Passive optical network with adaptive filters for upstream transmission management |
JP2012074597A (ja) * | 2010-09-29 | 2012-04-12 | Nippon Telegr & Teleph Corp <Ntt> | 波長可変光源 |
KR20120070836A (ko) * | 2010-12-22 | 2012-07-02 | 한국전자통신연구원 | 다파장 광 발생 장치 |
KR101262499B1 (ko) * | 2010-12-24 | 2013-05-08 | 엘지이노텍 주식회사 | 광 인쇄회로기판 및 그의 제조 방법 |
JP5881063B2 (ja) * | 2012-06-12 | 2016-03-09 | 日本電信電話株式会社 | 半導体光フィルタ |
EP2993743B1 (en) | 2014-09-02 | 2017-05-10 | Huawei Technologies Co., Ltd. | Tunable laser and method for tuning a lasing mode |
EP3029783B1 (en) | 2014-12-01 | 2020-03-04 | Huawei Technologies Co., Ltd. | Multi-channel tunable laser |
JP6897498B2 (ja) * | 2017-10-31 | 2021-06-30 | 日本電信電話株式会社 | 反射型波長フィルタ |
US10697806B2 (en) | 2018-11-16 | 2020-06-30 | General Electric Company | Integrated fiber-optic perturbation sensor |
JP7302430B2 (ja) * | 2019-10-24 | 2023-07-04 | 富士通株式会社 | 波長可変光源、これを用いた光伝送装置、及び波長可変光源の制御方法 |
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US8774642B2 (en) | 2011-06-29 | 2014-07-08 | Fujitsu Limited | Optical transmission apparatus and optical interleaving control method |
WO2014010037A1 (ja) * | 2012-07-11 | 2014-01-16 | 株式会社日立製作所 | 波長合分波器、光モジュールおよびそれを用いたサーバ |
JPWO2014010037A1 (ja) * | 2012-07-11 | 2016-06-20 | 株式会社日立製作所 | 波長合分波器、光モジュールおよびそれを用いたサーバ |
JP2018085475A (ja) * | 2016-11-25 | 2018-05-31 | 富士通株式会社 | 多波長レーザ装置及び波長多重通信システム |
Also Published As
Publication number | Publication date |
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JP4477567B2 (ja) | 2010-06-09 |
JP2006171706A (ja) | 2006-06-29 |
DE602005022818D1 (de) | 2010-09-23 |
KR100679241B1 (ko) | 2007-02-05 |
JP4610569B2 (ja) | 2011-01-12 |
US20060127006A1 (en) | 2006-06-15 |
EP1672398A1 (en) | 2006-06-21 |
ATE477511T1 (de) | 2010-08-15 |
KR20060067171A (ko) | 2006-06-19 |
US7136553B2 (en) | 2006-11-14 |
EP1672398B1 (en) | 2010-08-11 |
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