IN2014DN09142A - - Google Patents

Info

Publication number
IN2014DN09142A
IN2014DN09142A IN9142DEN2014A IN2014DN09142A IN 2014DN09142 A IN2014DN09142 A IN 2014DN09142A IN 9142DEN2014 A IN9142DEN2014 A IN 9142DEN2014A IN 2014DN09142 A IN2014DN09142 A IN 2014DN09142A
Authority
IN
India
Prior art keywords
modulator
bias
output power
bias voltage
component
Prior art date
Application number
Inventor
Andrew James Smith
Mohammed Nawaz
Simon Charles Giles
Original Assignee
Bae Systems 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
Priority claimed from GB1207668.3A external-priority patent/GB2502258A/en
Priority claimed from EP12275057.3A external-priority patent/EP2660647A1/en
Application filed by Bae Systems Plc filed Critical Bae Systems Plc
Publication of IN2014DN09142A publication Critical patent/IN2014DN09142A/en

Links

Classifications

    • 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 
    • G02F1/0121—Operation of devices; Circuit arrangements, not otherwise provided for in this subclass
    • G02F1/0123—Circuits for the control or stabilisation of the bias voltage, e.g. automatic bias control [ABC] feedback loops
    • 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
    • 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
    • G02F1/212—Mach-Zehnder type
    • 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
    • G02F1/2255—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 controlled by a high-frequency electromagnetic component in an electric waveguide structure

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
  • Optical Communication System (AREA)

Abstract

Methods and apparatus for controlling a bias voltage supplied to an optical modulator the modulator comprising a bias able component the bias able component being configurable to be biased by application of the bias voltage (20) such that the modulator operates at quadrature the method comprising: providing a target for the output power of the modulator the target for the output power of the modulator being an output power corresponding to the modulator operating at quadrature; applying to the bias able component a bias voltage (20) having an initial value of 0V; and thereafter varying the bias voltage (20) until the value of the bias voltage (20) is the value that is closest to the initial value and that biases the bias able component so that the output power of the modulator is within a pre defined range of the target output power.
IN9142DEN2014 2012-05-02 2013-04-30 IN2014DN09142A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB1207668.3A GB2502258A (en) 2012-05-02 2012-05-02 Determining a bias voltage for an optical modulator
EP12275057.3A EP2660647A1 (en) 2012-05-02 2012-05-02 Controlling bias voltages for optical modulators
PCT/GB2013/051112 WO2013164603A1 (en) 2012-05-02 2013-04-30 Controlling bias voltages for optical modulators

Publications (1)

Publication Number Publication Date
IN2014DN09142A true IN2014DN09142A (en) 2015-05-22

Family

ID=48289495

Family Applications (1)

Application Number Title Priority Date Filing Date
IN9142DEN2014 IN2014DN09142A (en) 2012-05-02 2013-04-30

Country Status (9)

Country Link
US (1) US9658476B2 (en)
EP (1) EP2845048B1 (en)
BR (1) BR112014027360B1 (en)
CL (1) CL2014002958A1 (en)
DK (1) DK2845048T3 (en)
ES (1) ES2626168T3 (en)
IN (1) IN2014DN09142A (en)
PL (1) PL2845048T3 (en)
WO (1) WO2013164603A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2845048B1 (en) 2012-05-02 2017-03-01 BAE Systems PLC Controlling bias voltages for optical modulators
WO2015063437A1 (en) * 2013-11-01 2015-05-07 Bae Systems Plc Controlling bias voltages for optical modulators
WO2015063438A1 (en) * 2013-11-01 2015-05-07 Bae Systems Plc Finding bias voltages for optical modulators
CN105871770B (en) * 2015-01-23 2020-06-30 中兴通讯股份有限公司 Method and device for controlling bias point voltage of modulator
US10243662B2 (en) * 2015-05-27 2019-03-26 Hewlett Packard Enterprise Development Lp Bias-based Mach-Zehnder modulation (MZM) systems
US10790910B2 (en) * 2018-12-22 2020-09-29 Intel Corporation Optical modulator-based transmission control
JP7363670B2 (en) * 2020-05-20 2023-10-18 住友電気工業株式会社 Optical transmitter, its control method and control program
EP4321925A1 (en) * 2022-08-08 2024-02-14 ADVA Optical Networking SE Method for determining a required adaption of a bias of an electro-optic modulator

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5845005B2 (en) * 1976-09-14 1983-10-06 日本ビクター株式会社 Modulation degree stabilization device for optical modulation
JP2518138B2 (en) * 1993-06-25 1996-07-24 日本電気株式会社 Light modulator
US6700907B2 (en) * 2000-11-20 2004-03-02 Jds Uniphase Corporation Mach-Zehnder modulator bias and driver gain control mechanism
GB0103072D0 (en) 2001-02-08 2001-03-21 Marconi Comm Ltd Interferometer
KR100450745B1 (en) * 2001-12-07 2004-10-01 한국전자통신연구원 Apparatus and method for controlling electro-optic modulator
ES2611627T3 (en) * 2006-11-16 2017-05-09 Bae Systems Plc Polarization controller for an optical modulator
CN101354515B (en) 2008-09-05 2012-04-04 中兴通讯股份有限公司 Laser modulator bias control method and device
GB2502259A (en) * 2012-05-02 2013-11-27 Bae Systems Plc Finding a bias voltage for an optical modulator
GB2502261A (en) * 2012-05-02 2013-11-27 Bae Systems Plc Controlling a bias voltage for an optical modulator
EP2845048B1 (en) 2012-05-02 2017-03-01 BAE Systems PLC Controlling bias voltages for optical modulators

Also Published As

Publication number Publication date
EP2845048B1 (en) 2017-03-01
CL2014002958A1 (en) 2015-09-21
PL2845048T3 (en) 2017-08-31
BR112014027360A2 (en) 2017-06-27
WO2013164603A1 (en) 2013-11-07
BR112014027360B1 (en) 2021-11-03
US20150110436A1 (en) 2015-04-23
ES2626168T3 (en) 2017-07-24
EP2845048A1 (en) 2015-03-11
DK2845048T3 (en) 2017-06-06
US9658476B2 (en) 2017-05-23

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