WO2005096774A3 - High-speed hitless switches for fiber optics - Google Patents

High-speed hitless switches for fiber optics Download PDF

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Publication number
WO2005096774A3
WO2005096774A3 PCT/US2005/011804 US2005011804W WO2005096774A3 WO 2005096774 A3 WO2005096774 A3 WO 2005096774A3 US 2005011804 W US2005011804 W US 2005011804W WO 2005096774 A3 WO2005096774 A3 WO 2005096774A3
Authority
WO
WIPO (PCT)
Prior art keywords
switches
mach
hitless
speed
zehnder configuration
Prior art date
Application number
PCT/US2005/011804
Other languages
French (fr)
Other versions
WO2005096774A2 (en
Inventor
Chee Wei Wong
Original Assignee
Univ Columbia
Chee Wei Wong
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 Univ Columbia, Chee Wei Wong filed Critical Univ Columbia
Publication of WO2005096774A2 publication Critical patent/WO2005096774A2/en
Publication of WO2005096774A3 publication Critical patent/WO2005096774A3/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
    • G02F1/29—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 position or the direction of light beams, i.e. deflection
    • G02F1/31—Digital deflection, i.e. optical switching
    • G02F1/313—Digital deflection, i.e. optical switching in an optical waveguide structure
    • G02F1/3132—Digital deflection, i.e. optical switching in an optical waveguide structure of directional coupler type
    • G02F1/3133—Digital deflection, i.e. optical switching in an optical waveguide structure of directional coupler type the optical waveguides being made of semiconducting materials
    • 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
    • G02F1/2257—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 the optical waveguides being made of semiconducting material
    • 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
    • G02F1/29—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 position or the direction of light beams, i.e. deflection
    • G02F1/31—Digital deflection, i.e. optical switching
    • G02F1/313—Digital deflection, i.e. optical switching in an optical waveguide structure
    • G02F1/3136—Digital deflection, i.e. optical switching in an optical waveguide structure of interferometric switch 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
    • G02F2203/00—Function characteristic
    • G02F2203/58—Multi-wavelength, e.g. operation of the device at a plurality of wavelengths
    • G02F2203/585—Add/drop devices

Abstract

High-speed hitless switches (10, 12) for directing optical beams are provided. These switches may use semiconductor-based materials whose refraction and absorption characteristics are modified by applying a voltage. The induced changes in these characteristics allow an optical signal to be directed from one branch to another without the loss of any signal data. These switching devices (10, 12) may be cascaded in a Mach-Zehnder configuration with each switch residing in the coupling area of the Mach-Zehnder configuration. The use of a multi-section switching device may also be performed so that certain optical losses can be reduced and better tuning can be achieved. A capacitive phase shifter (19) in the pi shift region of a Mach-Zehnder configuration may also be used to remove certain frequency dependencies.
PCT/US2005/011804 2004-04-05 2005-04-05 High-speed hitless switches for fiber optics WO2005096774A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US55971704P 2004-04-05 2004-04-05
US60/559,717 2004-04-05
US56035604P 2004-04-06 2004-04-06
US60/560,356 2004-04-06

Publications (2)

Publication Number Publication Date
WO2005096774A2 WO2005096774A2 (en) 2005-10-20
WO2005096774A3 true WO2005096774A3 (en) 2006-01-12

Family

ID=35125554

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/011804 WO2005096774A2 (en) 2004-04-05 2005-04-05 High-speed hitless switches for fiber optics

Country Status (1)

Country Link
WO (1) WO2005096774A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5945240B2 (en) * 2013-03-26 2016-07-05 日本電信電話株式会社 Optical phase modulator
WO2020079695A1 (en) * 2018-10-18 2020-04-23 Ramot At Tel-Aviv University Ltd. Detuning modulated composite pulses for high-fidelity robust quantum control

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6212315B1 (en) * 1998-07-07 2001-04-03 Lucent Technologies Inc. Channel power equalizer for a wavelength division multiplexed system
US6473541B1 (en) * 1999-09-15 2002-10-29 Seng-Tiong Ho Photon transistors
US20040001659A1 (en) * 2002-06-26 2004-01-01 Samara-Rubio Dean A. Method and apparatus for adjusting the phase of an optical beam

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6212315B1 (en) * 1998-07-07 2001-04-03 Lucent Technologies Inc. Channel power equalizer for a wavelength division multiplexed system
US6473541B1 (en) * 1999-09-15 2002-10-29 Seng-Tiong Ho Photon transistors
US20040001659A1 (en) * 2002-06-26 2004-01-01 Samara-Rubio Dean A. Method and apparatus for adjusting the phase of an optical beam

Also Published As

Publication number Publication date
WO2005096774A2 (en) 2005-10-20

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