JP3875673B2 - 複数モードのファイバと切り換え可能なモード変換器を備えた調節可能な分散補償装置 - Google Patents
複数モードのファイバと切り換え可能なモード変換器を備えた調節可能な分散補償装置 Download PDFInfo
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- JP3875673B2 JP3875673B2 JP2003312229A JP2003312229A JP3875673B2 JP 3875673 B2 JP3875673 B2 JP 3875673B2 JP 2003312229 A JP2003312229 A JP 2003312229A JP 2003312229 A JP2003312229 A JP 2003312229A JP 3875673 B2 JP3875673 B2 JP 3875673B2
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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
- G02B6/02—Optical fibres with cladding with or without a coating
-
- 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
- G02B6/29371—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 principle based on material dispersion
- G02B6/29374—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 principle based on material dispersion in an optical light guide
- G02B6/29376—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 principle based on material dispersion in an optical light guide coupling light guides for controlling wavelength dispersion, e.g. by concatenation of two light guides having different dispersion properties
- G02B6/29377—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 principle based on material dispersion in an optical light guide coupling light guides for controlling wavelength dispersion, e.g. by concatenation of two light guides having different dispersion properties controlling dispersion around 1550 nm, i.e. S, C, L and U bands from 1460-1675 nm
-
- 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
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
- H04B10/2513—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion
- H04B10/25133—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion including a lumped electrical or optical dispersion compensator
-
- 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
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/14—Mode converters
-
- 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
- G02B6/29395—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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- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Light Guides In General And Applications Therefor (AREA)
Description
ここでDAHOMはAHOMによって生じる全体的分散であり、Dk(i)はファイバのk番目のモードの分散であり、k(i)は切り換え構成であってそれが、どのMCが光をそのk番目のモードへと切り換えるかを決定する(kは1からファイバによってサポートされる異なる分散値のモードの数、Mまでの値をとる)。
ng=n−λdn/dλ (2)
で表わすことが可能であり、ここでngは群屈折率、nは屈折率、λは波長である。
Dmax=D01×Ltotal=+67.599ps/nm (3)
Dmin=D02×Ltotal=−532.035ps/nm (4)
ここでDminとDmaxはそれぞれ、図4に例示したAHOMが生じることのできる最小および最大の分散値である。したがって、この装置の分散調整のための最小過程サイズDstepは以下となる。
DAHOM=Dmax−(d×Dstep) (6)
で与えられる。
Claims (6)
- a.光信号を第1のモードから第2のモードへ変換する第1のスイッチ状態と前記光信号を第1のモードから第2のモードへは変換しない第2のスイッチ状態とを有する第1のモード変換器と、
b.少なくとも前記第1のモードと前記第2のモードとをサポートし、そして前記第1のモードの光信号に対して第1の分散値を、そして前記第2のモードの光信号に対して第2の分散値を有する、長さL1を有する第1の長さの光ファイバと、
c.前記光信号を第2のモードから前記第2のモードとは異なる第3のモードへ変換する第1のスイッチ状態と前記光信号を前記第2のモードから前記第3のモードへは変換しない第2のスイッチ状態とを有し、これにより光信号出力を生成する第2のモード変換器と、
d.前記第1のモード変換器を前記第1のスイッチ状態へ切り替えて第1の分散値で前記光信号出力を生成し、そして前記第1のモード変換器を前記第2のスイッチ状態へ切り替えて前記第2の分散値で前記光信号出力を生成するスイッチ素子とを含むことを特徴とする光学装置。 - 請求項1に記載の光学装置において、前記第3のモードと前記第1のモードが同じモードであることを特徴とする光学装置。
- 請求項1に記載の光学装置であって、さらに、
e.少なくとも第3のモードと前記第3のモードとは異なるモードとをサポートし、そして前記第3のモードの光信号に対して第1の分散値を、そして前記第3のモードとは異なるモードの光信号に対して第2の分散値を有する、長さL 2 を有する第2の長さの光ファイバと、
f.前記光信号を前記第3のモードから前記第3のモードとは異なるモードへ変換する第1のスイッチ状態と前記光信号を前記第3のモードから前記第3のモードとは異なるモードへは変換しない第2のスイッチ状態とを有し、これにより光信号出力を生成する第3のモード変換器と、
g.前記第2のモード変換器を前記第1のスイッチ状態へ切り替えて、前記第2の長さの光ファイバの前記第1の分散値で前記光信号出力を生成し、そして前記第2のモード変換器を前記第2のスイッチ状態へ切り替えて、前記第2の長さの光ファイバの前記第2の分散値で前記光信号出力を生成するスイッチ素子とを含むことを特徴とする光学装置。 - 請求項3に記載の光学装置において、前記長さL 1 と前記長さL 2 とが同じ長さであることを特徴とする光学装置。
- 請求項3に記載の光学装置において、前記長さL 1 と前記長さL 2 とが異なる長さであることを特徴とする光学装置。
- a.光信号を第1のモードから第2のモードへ変換する第1のスイッチ状態と光信号を第1のモードから第2のモードへは変換しない第2のスイッチ状態とを有する第1のモード変換器を介して光信号を伝送するステップと、
b.少なくとも前記第1のモードと前記第2のモードとをサポートし、そして前記光信号が前記第1のモードであるときには第1の分散値を有し、そして前記光信号が前記第2のモードであるときには第2の分散値を有する、長さL 1 を有する第1の長さの光ファイバを介して前記光信号を伝送するステップと、
c.前記光信号を第2のモードから前記第2のモードとは異なるモードへ変換する第1のスイッチ状態と前記光信号を第2のモードから前記第2のモードとは異なるモードへは変換しない第2のスイッチ状態とを有する第2のモード変換器を介して前記光信号を伝送するステップとを含み、前記第2のモード変換器が、前記第1のスイッチ状態の前記第1のモード変換器で切り替えられ、そして前記第2のスイッチ状態の前記第1のモード変換器で切り替えられることができ、これにより、光信号出力を生成するものであり、さらに、
d.前記第1のモード変換器を前記第1のスイッチ状態に切り替えて、前記第1の分散値で光信号出力を生成するステップと、
e.前記第2のモード変換器を前記第2のスイッチ状態に切り替えて、前記第2の分散値で光信号出力を生成するステップとを含むことを特徴とする方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/234,287 US6937788B2 (en) | 2002-09-04 | 2002-09-04 | Adjustable dispersion compensator with few mode fibers and switchable mode converters |
Publications (3)
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JP2004104782A JP2004104782A (ja) | 2004-04-02 |
JP2004104782A5 JP2004104782A5 (ja) | 2005-05-26 |
JP3875673B2 true JP3875673B2 (ja) | 2007-01-31 |
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JP2003312229A Expired - Fee Related JP3875673B2 (ja) | 2002-09-04 | 2003-09-04 | 複数モードのファイバと切り換え可能なモード変換器を備えた調節可能な分散補償装置 |
Country Status (9)
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US (1) | US6937788B2 (ja) |
EP (1) | EP1396742B1 (ja) |
JP (1) | JP3875673B2 (ja) |
KR (1) | KR100941983B1 (ja) |
CN (1) | CN1497279B (ja) |
AU (1) | AU2003244566B2 (ja) |
CA (1) | CA2437877C (ja) |
DE (1) | DE60314210T2 (ja) |
IL (1) | IL157502A (ja) |
Families Citing this family (25)
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US7177510B2 (en) * | 2004-08-09 | 2007-02-13 | Fitel Usa Corp. | Polarization insensitive microbend fiber gratings and devices using the same |
JP2006145757A (ja) * | 2004-11-18 | 2006-06-08 | Fujitsu Ltd | 分散補償器 |
US20070206910A1 (en) * | 2006-03-04 | 2007-09-06 | Siddharth Ramachandran | Optical fibers and optical fiber devices with total dispersion greater than material dispersion |
JP4826462B2 (ja) * | 2006-12-20 | 2011-11-30 | 株式会社日立製作所 | 分散補償器、光伝送システム及び光伝送方法 |
AU2008213831B2 (en) * | 2007-02-05 | 2012-12-20 | Ofs Fitel, Llc | Selectively pumping a gain-doped region of an optical fiber |
US8270786B2 (en) * | 2008-11-21 | 2012-09-18 | Ofs Fitel, Llc | Optical fiber mode couplers |
US8054892B2 (en) * | 2009-02-12 | 2011-11-08 | Agere Systems Inc. | Compensating transmission line to reduce sensitivity of performance due to channel length variation |
US8818195B2 (en) | 2010-08-20 | 2014-08-26 | Adva Optical Networking Se | Method of operating an optical transmission system and optical transmission system |
US8958703B2 (en) * | 2011-03-04 | 2015-02-17 | Alcatel Lucent | Multipath channel for optical subcarrier modulation |
EP2541809B1 (en) * | 2011-06-30 | 2016-11-02 | Xieon Networks S.à r.l. | Method and system for reducing the modal delay in a multimode transmission system |
EP2742377B1 (en) * | 2011-08-10 | 2019-02-27 | OFS Fitel, LLC | Few moded fiber device employing mode conversion |
CN103907302B (zh) * | 2011-09-02 | 2017-11-17 | 阿尔卡特朗讯 | 用于空分复用系统的方法和装置 |
EP2645609B1 (en) * | 2012-03-30 | 2014-10-29 | Alcatel Lucent | Method of optical data transmission using mode division multiplexing |
JP5893994B2 (ja) * | 2012-04-02 | 2016-03-23 | 日本電信電話株式会社 | 光ファイバ伝送システム及び光ファイバ伝送方法 |
CN102914421B (zh) * | 2012-10-19 | 2015-08-12 | 苏州光环科技有限公司 | 一种用于测量光学双折射媒介中偏振串扰的方法及其设备 |
JP6023020B2 (ja) * | 2013-07-26 | 2016-11-09 | 日本電信電話株式会社 | 光増幅器 |
WO2016070420A1 (zh) | 2014-11-07 | 2016-05-12 | 华为技术有限公司 | 一种模式转换器、多模波导传输装置及方法 |
CN104792402B (zh) * | 2015-04-16 | 2017-07-28 | 华中科技大学 | 一种基于光纤萨格纳克干涉仪的声波传感测量装置 |
CN105891957B (zh) * | 2016-06-15 | 2019-01-08 | 北京邮电大学 | 一种全光纤的一阶oam模式产生系统 |
US10969611B2 (en) * | 2017-07-14 | 2021-04-06 | The Government Of The United States Of America, As Represented By The Secretary Of The Navy | Devices for transmitting a modulated optical signal using a few-mode fiber |
JP6989793B2 (ja) * | 2017-08-01 | 2022-02-03 | 日本電信電話株式会社 | 光伝送システム |
JP7061771B2 (ja) * | 2018-04-18 | 2022-05-02 | 日本電信電話株式会社 | モード交換器 |
CN112346174B (zh) | 2019-08-09 | 2022-12-02 | 华为技术有限公司 | 一种聚合物波导和太赫兹信号传输方法 |
RU2762850C1 (ru) * | 2021-04-15 | 2021-12-23 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Поволжский государственный университет телекоммуникаций и информатики" | Способ компенсации дисперсии маломодовой волоконно-оптической линии связи |
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2002
- 2002-09-04 US US10/234,287 patent/US6937788B2/en not_active Expired - Lifetime
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- 2003-08-19 CA CA2437877A patent/CA2437877C/en not_active Expired - Fee Related
- 2003-08-20 IL IL157502A patent/IL157502A/en active IP Right Grant
- 2003-09-02 EP EP03019933A patent/EP1396742B1/en not_active Expired - Lifetime
- 2003-09-02 DE DE60314210T patent/DE60314210T2/de not_active Expired - Lifetime
- 2003-09-03 CN CN031581056A patent/CN1497279B/zh not_active Expired - Fee Related
- 2003-09-04 KR KR1020030061674A patent/KR100941983B1/ko active IP Right Grant
- 2003-09-04 JP JP2003312229A patent/JP3875673B2/ja not_active Expired - Fee Related
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Publication number | Publication date |
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EP1396742A2 (en) | 2004-03-10 |
DE60314210D1 (de) | 2007-07-19 |
CN1497279B (zh) | 2010-05-26 |
CA2437877A1 (en) | 2004-03-04 |
AU2003244566A1 (en) | 2004-03-25 |
CA2437877C (en) | 2011-10-25 |
KR100941983B1 (ko) | 2010-02-16 |
KR20040021562A (ko) | 2004-03-10 |
US20040047551A1 (en) | 2004-03-11 |
IL157502A (en) | 2008-06-05 |
IL157502A0 (en) | 2004-03-28 |
DE60314210T2 (de) | 2008-02-14 |
CN1497279A (zh) | 2004-05-19 |
JP2004104782A (ja) | 2004-04-02 |
EP1396742A3 (en) | 2004-06-02 |
AU2003244566B2 (en) | 2008-11-13 |
US6937788B2 (en) | 2005-08-30 |
EP1396742B1 (en) | 2007-06-06 |
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