ES2040756T3 - Metodos y dispositivos para alterar la polarizacion optica. - Google Patents

Metodos y dispositivos para alterar la polarizacion optica.

Info

Publication number
ES2040756T3
ES2040756T3 ES198787311107T ES87311107T ES2040756T3 ES 2040756 T3 ES2040756 T3 ES 2040756T3 ES 198787311107 T ES198787311107 T ES 198787311107T ES 87311107 T ES87311107 T ES 87311107T ES 2040756 T3 ES2040756 T3 ES 2040756T3
Authority
ES
Spain
Prior art keywords
signal
optical
scrambling
devices
polarisation
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 - Lifetime
Application number
ES198787311107T
Other languages
English (en)
Inventor
Terence Geoffrey Hodgkinson
David William Smith
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Telecommunications PLC
Original Assignee
British Telecommunications PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by British Telecommunications PLC filed Critical British Telecommunications PLC
Application granted granted Critical
Publication of ES2040756T3 publication Critical patent/ES2040756T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H04B10/50—Transmitters
    • H04B10/516—Details of coding or modulation
    • H04B10/532—Polarisation modulation
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/011—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  in optical waveguides, not otherwise provided for in this subclass
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/21—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  by interference
    • G02F1/225—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  by interference in an optical waveguide structure
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2/00—Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/0136—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  for the control of polarisation, e.g. state of polarisation [SOP] control, polarisation scrambling, TE-TM mode conversion or separation
    • G02F1/0139—Polarisation scrambling devices; Depolarisers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S359/00—Optical: systems and elements
    • Y10S359/90—Methods

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Power Steering Mechanism (AREA)
  • Laser Surgery Devices (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

LA INMVENCION PROVEE METODOS Y DISPOSITIVOS PARA PROCESAR UNA SEÑAL OPTICA. EN UNA EXPRESION, UN DISPOSITIVO OPTICA (101) PARA REVOLVER UNA SEÑAL OPTICA DE ENTRADA QUE COMPRENDE UN CONMUTADOR OPTICO (10) QUE DISTRIBUYE LA SEÑAL OPTICA ENTRE DOS TRAYECTORIAS OPTICAS INTERMEDIAS (13, 14) BAJO EL CONTROL DE UNA SEÑAL ESCOGIDA DE UN CIRCUITO DE CONTROL (12). LA POLARIZACION DE LA SEÑAL EN UNA DE LAS TRAYECTORIAS OPTICAS INTERMEDIAS (13) ES ROTADA POR UN CONVERTIDOR TE - TW (15). LAS POLARIZACIONES DE LAS DOS SEÑALES INTERMEDIAS SON POR ELLO HECHAS MUTUAMENTE ORTOGONALES. ESTAS SEÑALES MUTUAMENTE ORTOGONALES SON ENTONCES RECOMBINADAS POR UN ACOPLADOR DIRECCIONAL (16) PARA PROVEER UNA SEÑAL OPTICA COMBINADA DE SALIDA CON UNA POLARIZACION ESCOGIDA ALTERNATIVA ENTRE ESTADOS ORTOGONALES DE ACUERDO A LA FRECUENCIA DE LA SEÑAL ESCOGIDA. LA INVENCION PUEDE SER APLICADA PARA MEJORAR LA RECEPCION DE LA SEÑAL, POR EJEMPLO, EN SISTEMAS DE TRANSMISION OPTICA COHERENTE.
ES198787311107T 1986-12-29 1987-12-16 Metodos y dispositivos para alterar la polarizacion optica. Expired - Lifetime ES2040756T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB868630959A GB8630959D0 (en) 1986-12-29 1986-12-29 Optical polarisation control

Publications (1)

Publication Number Publication Date
ES2040756T3 true ES2040756T3 (es) 1993-11-01

Family

ID=10609631

Family Applications (1)

Application Number Title Priority Date Filing Date
ES198787311107T Expired - Lifetime ES2040756T3 (es) 1986-12-29 1987-12-16 Metodos y dispositivos para alterar la polarizacion optica.

Country Status (10)

Country Link
US (1) US5031236A (es)
EP (1) EP0277427B1 (es)
JP (1) JP2626896B2 (es)
AT (1) ATE88816T1 (es)
AU (1) AU598619B2 (es)
CA (1) CA1305523C (es)
DE (1) DE3785662T2 (es)
ES (1) ES2040756T3 (es)
GB (1) GB8630959D0 (es)
HK (1) HK130296A (es)

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DE58908768D1 (de) * 1988-09-30 1995-01-26 Siemens Ag Verfahren zum synchronisierten Umtasten eines Polarisationszustandes eines optischen Sendesignals eines optischen Übertragungssystems mit Überlagerungsempfang und Vorrichtung zur Durchführung des Verfahrens.
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US5126871A (en) * 1989-11-15 1992-06-30 General Instrument Corporation Method and apparatus for redundant communication of optical signals with distortion cancellation
IT1241209B (it) * 1990-04-27 1993-12-29 Cselt Centro Studi Lab Telecom Modulatore ottico di polarizzazione utilizzante strutture interferometriche
IT1239609B (it) * 1990-05-11 1993-11-11 Bordoni Ugo Fondazione Metodo per la formazione di un segnale multilivello su una portante ottica coerente mediante modulazione di fase e di polarizzazione della portante e apparato di trasmissione e di ricezione eterodina di segnali formati con tale metodo
JP3001943B2 (ja) * 1990-08-30 2000-01-24 株式会社東芝 偏波スイッチング光源、光受信装置及びコヒーレント光伝送システム
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IT1250199B (it) * 1991-07-04 1995-04-03 Cselt Centro Studi Lab Telecom Sistema di comunicazione ottica coerente a modulazione di frequenza con variazione continua della polarizzazione
JP3226067B2 (ja) * 1992-10-03 2001-11-05 キヤノン株式会社 光通信方法及び光通信システム
US5631559A (en) * 1993-03-05 1997-05-20 Northeastern University Method and apparatus for performing magnetic field measurements using magneto-optic kerr effect sensors
US5493220A (en) * 1993-03-05 1996-02-20 Northeastern University Magneto-optic Kerr effect stress sensing system
US5309530A (en) * 1993-04-30 1994-05-03 At&T Bell Laboratories Technique utilizing stress-induced birefringence for reducing polarization dependent hole-burning in an amplified optical transmission system
US5309535A (en) * 1993-04-30 1994-05-03 At&T Bell Laboratories Apparatus and method utilizing a rotating waveplate for reducing polarization dependent hole-burning in an amplified optical transmission system
US5327511A (en) * 1993-06-18 1994-07-05 At&T Bell Laboratories Apparatus and method employing fast polarization modulation to reduce effects of polarization hole burning and polarization dependent loss
US5359678A (en) * 1993-06-18 1994-10-25 At&T Bell Laboratories Apparatus and method employing fast polarization modulation to reduce effects of polarization hole burning and/or polarization dependent loss
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DE19640725A1 (de) * 1996-10-02 1998-04-09 Reinhold Prof Dr Ing Noe Netzwerkanalysator
JPH10206661A (ja) * 1997-01-28 1998-08-07 Fujitsu Ltd 偏波スクランブラ及びそれを用いた光集積回路
US5970188A (en) * 1997-06-20 1999-10-19 Sprint Communications Company L.P. Method and apparatus for controlling an optical signal
EP0928080A1 (en) * 1997-12-31 1999-07-07 PIRELLI CAVI E SISTEMI S.p.A. Suppression of polarization hole burning with an acousto-optic modulator
US6377378B1 (en) 1998-01-16 2002-04-23 Pirelli Cavi E Sistemi S.P.A. Suppression of polarization hole burning with an acousto-optic modulator
US6671056B2 (en) * 2001-01-11 2003-12-30 Agilent Technologies, Inc Method and system for optical spectrum analysis with a depolarized local oscillator signal
JP2003060576A (ja) * 2001-08-22 2003-02-28 Nec Corp 偏波スクランブラユニット及びこれを用いた多中継伝送システム
DE10147053A1 (de) * 2001-09-25 2003-04-03 Siemens Ag Polarisationsumsetzer für Polarisationsmultiplex und optischen Überlagerungsempfang
KR100853233B1 (ko) * 2002-01-17 2008-08-20 김영호 광스위치를 이용한 정보보안장치 및 암호화 장치
US20040208646A1 (en) * 2002-01-18 2004-10-21 Seemant Choudhary System and method for multi-level phase modulated communication
GB2394375A (en) * 2002-10-19 2004-04-21 Bookham Technology Plc Integrated optical monitor with polarisation scrambling
US7361171B2 (en) 2003-05-20 2008-04-22 Raydiance, Inc. Man-portable optical ablation system
US9022037B2 (en) 2003-08-11 2015-05-05 Raydiance, Inc. Laser ablation method and apparatus having a feedback loop and control unit
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Also Published As

Publication number Publication date
EP0277427B1 (en) 1993-04-28
US5031236A (en) 1991-07-09
AU598619B2 (en) 1990-06-28
HK130296A (en) 1996-07-26
DE3785662D1 (de) 1993-06-03
ATE88816T1 (de) 1993-05-15
CA1305523C (en) 1992-07-21
GB8630959D0 (en) 1987-02-04
JP2626896B2 (ja) 1997-07-02
DE3785662T2 (de) 1993-08-19
AU8305987A (en) 1988-06-30
EP0277427A1 (en) 1988-08-10
JPS63174435A (ja) 1988-07-18

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