WO2002010812A3 - Device and method for variable attenuation of an optical channel - Google Patents

Device and method for variable attenuation of an optical channel Download PDF

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Publication number
WO2002010812A3
WO2002010812A3 PCT/US2001/024361 US0124361W WO0210812A3 WO 2002010812 A3 WO2002010812 A3 WO 2002010812A3 US 0124361 W US0124361 W US 0124361W WO 0210812 A3 WO0210812 A3 WO 0210812A3
Authority
WO
WIPO (PCT)
Prior art keywords
core
cladding
thermal source
variable attenuation
optical channel
Prior art date
Application number
PCT/US2001/024361
Other languages
French (fr)
Other versions
WO2002010812A2 (en
Inventor
William K Bischel
Tony C Kowalczyk
Original Assignee
Gemfire Corp
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 US09/630,981 external-priority patent/US6434318B1/en
Priority claimed from US09/919,711 external-priority patent/US20020018636A1/en
Application filed by Gemfire Corp filed Critical Gemfire Corp
Priority to AU2001281026A priority Critical patent/AU2001281026A1/en
Publication of WO2002010812A2 publication Critical patent/WO2002010812A2/en
Publication of WO2002010812A3 publication Critical patent/WO2002010812A3/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 
    • G02F1/011—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 
    • G02F1/061—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  based on electro-optical organic material
    • G02F1/065—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  based on electro-optical organic material 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 
    • G02F1/0147—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  based on thermo-optic effects

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)
  • Mechanical Light Control Or Optical Switches (AREA)

Abstract

A device for variable attenuation of an optical channel includes an elongated core surrounded by a cladding. Optical energy propagating along the longitudinal axis of the core is normally confined thereto by the difference in refractive indices between the core and cladding. The thermo-optic coefficients of the core and cladding are closely matched such that waveguide confinement is substantially invariant with respect to ambient temperature. The device further includes a thermal source arranged above the core. The thermal source is operable to generate a temperature gradient of controllable magnitude along a vertical axis extending through the core. The temperature gradient causes reduction of the local refractive index within the core relative to surrounding regions of the cladding such that a portion of the optical energy is deflected away from the thermal source and extracted from the core.
PCT/US2001/024361 2000-08-02 2001-08-02 Device and method for variable attenuation of an optical channel WO2002010812A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001281026A AU2001281026A1 (en) 2000-08-02 2001-08-02 Device and method for variable attenuation of an optical channel

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/630,981 2000-08-02
US09/630,981 US6434318B1 (en) 2000-08-02 2000-08-02 Device and method for variable attenuation of an optical channel
US09/919,711 US20020018636A1 (en) 2000-08-02 2001-08-01 Device and method for variable attenuation of an optical channel
US09/919,711 2001-08-01

Publications (2)

Publication Number Publication Date
WO2002010812A2 WO2002010812A2 (en) 2002-02-07
WO2002010812A3 true WO2002010812A3 (en) 2002-03-28

Family

ID=27091275

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/024361 WO2002010812A2 (en) 2000-08-02 2001-08-02 Device and method for variable attenuation of an optical channel

Country Status (2)

Country Link
AU (1) AU2001281026A1 (en)
WO (1) WO2002010812A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104310301B (en) * 2014-11-12 2023-08-08 苏州盛维新电子科技有限公司 MEMS adjustable optical attenuator chip integrated with micro-pad and manufacturing method thereof
CN110109267A (en) * 2018-02-01 2019-08-09 上海硅通半导体技术有限公司 A kind of thermal-optical type phase modulating structure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0987580A1 (en) * 1998-09-16 2000-03-22 Akzo Nobel N.V. Optical intensity modulator and switch comprising the same
JP2000241774A (en) * 1999-02-18 2000-09-08 Nippon Telegr & Teleph Corp <Ntt> Tunable optical attenuator and optical switch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0987580A1 (en) * 1998-09-16 2000-03-22 Akzo Nobel N.V. Optical intensity modulator and switch comprising the same
JP2000241774A (en) * 1999-02-18 2000-09-08 Nippon Telegr & Teleph Corp <Ntt> Tunable optical attenuator and optical switch

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 12 3 January 2001 (2001-01-03) *

Also Published As

Publication number Publication date
AU2001281026A1 (en) 2002-02-13
WO2002010812A2 (en) 2002-02-07

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