JP4056538B2 - 可変多チャンネルフィルター - Google Patents
可変多チャンネルフィルター Download PDFInfo
- Publication number
- JP4056538B2 JP4056538B2 JP2005183352A JP2005183352A JP4056538B2 JP 4056538 B2 JP4056538 B2 JP 4056538B2 JP 2005183352 A JP2005183352 A JP 2005183352A JP 2005183352 A JP2005183352 A JP 2005183352A JP 4056538 B2 JP4056538 B2 JP 4056538B2
- Authority
- JP
- Japan
- Prior art keywords
- polarization
- channel filter
- optical fiber
- channel
- coupler
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
-
- 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
- G02B6/27—Optical coupling means with polarisation selective and adjusting means
- G02B6/2726—Optical coupling means with polarisation selective and adjusting means in or on light guides, e.g. polarisation means assembled in a light guide
- G02B6/274—Optical coupling means with polarisation selective and adjusting means in or on light guides, e.g. polarisation means assembled in a light guide based on light guide birefringence, e.g. due to coupling between light guides
-
- 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
- G02B6/27—Optical coupling means with polarisation selective and adjusting means
- G02B6/2753—Optical coupling means with polarisation selective and adjusting means characterised by their function or use, i.e. of the complete device
- G02B6/2766—Manipulating the plane of polarisation from one input polarisation to another output polarisation, e.g. polarisation rotators, linear to circular polarisation 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
- G02B6/29331—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
- G02B6/29332—Wavelength selective couplers, i.e. based on evanescent coupling between light guides, e.g. fused fibre couplers with transverse coupling between fibres having different propagation constant wavelength dependency
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Polarising Elements (AREA)
- Optical Integrated Circuits (AREA)
Description
20:偏光調節器(λ/2)
30:偏光調節器(λ/4)
40:3dBカプラ
100:可変多チャンネルフィルター
Claims (6)
- 複数個の偏光維持光ファイバ部分と、
偏光調節器(λ/2)と、
偏光調節器(λ/4)と、
3dBカプラと、を含み、
上記それぞれの偏光維持光ファイバ部分を通る光信号の偏光状態を、上記偏光調節器(λ/2)及び偏光調節器(λ/4)で調節して、波長可変及びチャンネル間隔を調節できるように構成された可変多チャンネルフィルターであり、
入力光信号を、上記3dBカプラを通じて二つの部分に分離し、かつ、時計回り方向及び反時計回り方向でそれぞれ反対方向に進行するようにし、
分けられた二つの信号が、上記偏光調節器(λ/4)を経た後、それぞれ多重に直列連結された上記偏光維持光ファイバ部分と上記偏光調節器(λ/2)を経て相互に異なる位相変化を生じ、上記3dBカプラを通じて結合することにより多チャンネルフィルター特性を発生させる、
ことを特徴とする、可変多チャンネルフィルター。 - 少なくとも一個又は複数個の偏光維持光ファイバ部分と、
偏光調節器(λ/2)と、
偏光調節器(λ/4)と、
3dBカプラと、を含み、
上記それぞれの偏光維持光ファイバ部分を通る光信号の偏光状態を、上記偏光調節器(λ/2)及び偏光調節器(λ/4)で調節して、波長可変及びチャンネル間隔を調節できるように構成され、
入力光信号を、上記3dBカプラを通じて二つの部分に分離し、かつ、時計回り方向及び反時計回り方向でそれぞれ反対方向に進行するようにし、
分離した二つの信号が、上記偏光調節器(λ/4)を経た後それぞれ多重に直列連結された上記偏光維持光ファイバ部分と上記偏光調節器(λ/2)を経て相互に異なる位相変化を生じ、上記3dBカプラを通じて結合することにより多チャンネルフィルター特性を発生させる、
可変多チャンネルフィルターが、
複数個繋がれている、
ことを特徴とする可変多チャンネルフィルター。 - 上記偏光維持光ファイバは、
シリカ光ファイバ、フォトニッククリスタル光ファイバ、バルク(bulk)偏光維持素子、ポリマー光ファイバ等の複屈折性を持っている素子のうちいずれか一つである、
ことを特徴とする、請求項1又は2に記載の可変多チャンネルフィルター。 - 上記偏光調節器(λ/2)は、
光信号のチャンネル間隔を調節することができる、
ことを特徴とする、請求項1又は2に記載の可変多チャンネルフィルター。 - 上記偏光調節器(λ/4)は、
光信号の波長位置を調節することができる、
ことを特徴とする、請求項1又は2に記載の可変多チャンネルフィルター。 - 上記二つの光信号の間には、干渉現象が生じ、この干渉現象によって多チャンネルフィルター特性を現わす、
ことを特徴とする、請求項1又は2に記載の可変多チャンネルフィルター。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020040100567A KR100658532B1 (ko) | 2004-12-02 | 2004-12-02 | 가변 다채널 필터 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006163344A JP2006163344A (ja) | 2006-06-22 |
JP4056538B2 true JP4056538B2 (ja) | 2008-03-05 |
Family
ID=36574297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005183352A Expired - Fee Related JP4056538B2 (ja) | 2004-12-02 | 2005-06-23 | 可変多チャンネルフィルター |
Country Status (3)
Country | Link |
---|---|
US (1) | US7251382B2 (ja) |
JP (1) | JP4056538B2 (ja) |
KR (1) | KR100658532B1 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101013030B1 (ko) * | 2009-06-26 | 2011-02-14 | 한국과학기술연구원 | 쌍파장 광섬유 레이저, 포토닉 마이크로파 노치 필터 및 노치 주파수 가변 방법 |
CN102023337B (zh) * | 2009-09-22 | 2012-01-18 | 北京大学 | 一种双偏振光保偏光纤消偏器 |
CN102571197B (zh) * | 2011-12-29 | 2014-10-08 | 东南大学 | 基于组合波片偏振调节的快速偏振控制方法 |
CN104469555B (zh) * | 2013-09-13 | 2018-05-18 | 华为技术有限公司 | 全光信息交换装置及方法 |
CN103676008B (zh) * | 2013-12-31 | 2016-01-20 | 武汉光迅科技股份有限公司 | 一种光梳状滤波器 |
KR101642576B1 (ko) * | 2014-07-04 | 2016-07-25 | 부경대학교 산학협력단 | 광섬유 유연 다파장 필터 및 이를 이용한 스펙트럼 파장 제어방법 |
WO2016145347A1 (en) * | 2015-03-12 | 2016-09-15 | University Of Georgia Research Foundation, Inc. | Photonics based tunable multiband microwave filter |
US10541661B2 (en) * | 2016-08-18 | 2020-01-21 | University Of Georgia Research Foundation, Inc. | Continuously tunable and highly reconfigurable multiband RF filter |
KR102054243B1 (ko) * | 2018-02-19 | 2019-12-10 | 부경대학교 산학협력단 | 고차 광섬유 다파장 필터 및 이를 이용한 연속 파장 조정 방법 |
CN109494555A (zh) * | 2018-12-29 | 2019-03-19 | 北京信息科技大学 | 基于级联光栅结合Sagnac环的可调光纤激光器 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08110487A (ja) * | 1994-10-11 | 1996-04-30 | Koshin Kogaku:Kk | 波長可変フィルタ装置 |
KR100281410B1 (ko) * | 1998-11-24 | 2001-02-01 | 정선종 | 광섬유 편광 간섭계를 이용한 파장 가변 광필터링 시스템 |
JP3388227B2 (ja) * | 1999-11-05 | 2003-03-17 | 独立行政法人通信総合研究所 | 光分散測定装置およびそれを用いた測定方法 |
KR100315421B1 (ko) * | 1999-12-21 | 2001-11-26 | 오길록 | 파장 간격 가변 두 파장 광섬유 광학 필터 및 이를 이용한레이저 |
KR100354336B1 (ko) * | 2000-10-17 | 2002-09-28 | 한국과학기술연구원 | 초고속 광신호처리용 파장변환장치 |
JP3360074B2 (ja) * | 2001-03-08 | 2002-12-24 | 科学技術振興事業団 | 可変光波機能回路及び可変光波機能装置 |
-
2004
- 2004-12-02 KR KR1020040100567A patent/KR100658532B1/ko not_active IP Right Cessation
-
2005
- 2005-06-23 JP JP2005183352A patent/JP4056538B2/ja not_active Expired - Fee Related
- 2005-06-29 US US11/170,637 patent/US7251382B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2006163344A (ja) | 2006-06-22 |
KR20060061940A (ko) | 2006-06-09 |
US7251382B2 (en) | 2007-07-31 |
US20060120656A1 (en) | 2006-06-08 |
KR100658532B1 (ko) | 2006-12-15 |
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