CA2088372A1 - Tunable liquid-crystal etalon filter - Google Patents

Tunable liquid-crystal etalon filter

Info

Publication number
CA2088372A1
CA2088372A1 CA2088372A CA2088372A CA2088372A1 CA 2088372 A1 CA2088372 A1 CA 2088372A1 CA 2088372 A CA2088372 A CA 2088372A CA 2088372 A CA2088372 A CA 2088372A CA 2088372 A1 CA2088372 A1 CA 2088372A1
Authority
CA
Canada
Prior art keywords
etalon filter
tunable liquid
crystal etalon
changing
filter
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.)
Granted
Application number
CA2088372A
Other languages
French (fr)
Other versions
CA2088372C (en
Inventor
Jayantilal Shamjibhai Patel
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.)
Iconectiv LLC
Original Assignee
Individual
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 US07/577,220 external-priority patent/US5068749A/en
Priority claimed from US07/598,476 external-priority patent/US5150236A/en
Priority claimed from US07/677,769 external-priority patent/US5111321A/en
Application filed by Individual filed Critical Individual
Publication of CA2088372A1 publication Critical patent/CA2088372A1/en
Application granted granted Critical
Publication of CA2088372C publication Critical patent/CA2088372C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04B10/25—Arrangements specific to fibre transmission
    • 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
    • G02F1/216—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 using liquid crystals, e.g. liquid crystal Fabry-Perot filters
    • 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 
    • G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
    • G02F1/137—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 liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—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 liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • 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
    • G02F1/213—Fabry-Perot 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
    • G02F2203/05—Function characteristic wavelength dependent
    • G02F2203/055—Function characteristic wavelength dependent wavelength filtering
    • 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
    • G02F2203/06—Polarisation independent

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)

Abstract

A tunable liquid-crystal etalon filter comprising two dielectric stack mirrors (18, 20) defining an optical cavity into which is filled a liquid crystal (26). Electrodes (14, 16) disposed on the outsides of the mirrors apply an electric field to the liquid crystal, changing its refractive index and thereby changing,its optical length.
Thereby, the optical pass band of the filter can be electrically changed in a low-powered, compact, rugged, and economical structure.
CA002088372A 1990-08-31 1991-08-07 Tunable liquid-crystal etalon filter Expired - Fee Related CA2088372C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US07/577,220 US5068749A (en) 1990-08-31 1990-08-31 Electronically tunable polarization-independent liquid crystal optical filter
US577,220 1990-08-31
US07/598,476 US5150236A (en) 1990-08-31 1990-10-16 Tunable liquid crystal etalon filter
US598,476 1990-10-16
US677,769 1991-03-29
US07/677,769 US5111321A (en) 1990-10-16 1991-03-29 Dual-polarization liquid-crystal etalon filter
PCT/US1991/005609 WO1992004653A1 (en) 1990-08-31 1991-08-07 Tunable liquid-crystal etalon filter

Publications (2)

Publication Number Publication Date
CA2088372A1 true CA2088372A1 (en) 1992-03-01
CA2088372C CA2088372C (en) 1999-10-05

Family

ID=27416265

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002088372A Expired - Fee Related CA2088372C (en) 1990-08-31 1991-08-07 Tunable liquid-crystal etalon filter

Country Status (4)

Country Link
EP (1) EP0547077A1 (en)
JP (1) JP2587743B2 (en)
CA (1) CA2088372C (en)
WO (1) WO1992004653A1 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950011951B1 (en) * 1992-12-04 1995-10-12 삼성전관주식회사 Liquid crystal display and its manufacturing method
GB9309003D0 (en) * 1993-04-30 1993-06-16 Marconi Gec Ltd Optical devices
GB9608636D0 (en) 1996-04-25 1996-07-03 Secr Defence A tuneable filter
US8111401B2 (en) 1999-11-05 2012-02-07 Robert Magnusson Guided-mode resonance sensors employing angular, spectral, modal, and polarization diversity for high-precision sensing in compact formats
US7167615B1 (en) 1999-11-05 2007-01-23 Board Of Regents, The University Of Texas System Resonant waveguide-grating filters and sensors and methods for making and using same
US6951715B2 (en) * 2000-10-30 2005-10-04 Sru Biosystems, Inc. Optical detection of label-free biomolecular interactions using microreplicated plastic sensor elements
EP1286187A3 (en) * 2001-08-06 2004-08-11 Coho Holdings, LLC Optical device for filtering and sensing
US7120333B2 (en) 2001-10-25 2006-10-10 Lambda Crossing, Ltd. Polarization insensitive tunable optical filters
FR2851043B1 (en) * 2003-02-07 2005-04-29 Cit Alcatel DEMULTIPLEXER OF A LIGHT SIGNAL
US7447401B2 (en) * 2005-02-28 2008-11-04 Optium Australia Pty Limited Optical communications system
CA2693700A1 (en) 2007-07-11 2009-01-15 Sru Biosystems, Inc. Methods for identifying modulators of ion channels
US9134307B2 (en) 2007-07-11 2015-09-15 X-Body, Inc. Method for determining ion channel modulating properties of a test reagent
US9006661B1 (en) 2012-10-31 2015-04-14 Exelis, Inc. Compact THz focal plane imaging array with integrated context imaging sensors and antennae matrix
US9234797B1 (en) 2013-03-05 2016-01-12 Exelis, Inc. Compact THz imaging detector with an integrated micro-spectrometer spectral tuning matrix
US9195048B1 (en) 2013-03-05 2015-11-24 Exelis, Inc. Terahertz tunable filter with microfabricated mirrors
JP6291747B2 (en) * 2013-08-28 2018-03-14 ソニー株式会社 Optical low-pass filter, imaging device, and imaging apparatus
US9400412B2 (en) 2014-07-16 2016-07-26 Kent State University Nanosecond liquid crystalline optical modulator
WO2020105037A1 (en) * 2018-11-19 2020-05-28 Lauber Yair Zvi Novel imaging systems and methods
CN111193083B (en) * 2020-02-26 2022-02-01 京东方科技集团股份有限公司 Band-pass filter, manufacturing method and driving method thereof, and electronic device
KR102404542B1 (en) * 2020-10-12 2022-06-02 주식회사 알바트레이스 Wavelength-controlled etalon filter comprising double seal line and manufacturing method of that

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59116625A (en) * 1982-12-23 1984-07-05 Toshiba Corp Optical pulse generator
US4630898A (en) * 1983-10-14 1986-12-23 Jewell Jack L Etalon optical logic gate apparatus and method
JPS60242422A (en) * 1984-05-16 1985-12-02 Nippon Telegr & Teleph Corp <Ntt> Variable wavelength optical filter
JPS61224384A (en) * 1985-03-29 1986-10-06 Nippon Telegr & Teleph Corp <Ntt> Wavelength selecting optical switch
JPS62178219A (en) * 1986-01-31 1987-08-05 Nippon Telegr & Teleph Corp <Ntt> Optical wavelength selecting element
GB8621438D0 (en) * 1986-09-05 1986-10-15 Secr Defence Electro-optic device
GB8621439D0 (en) * 1986-09-05 1986-10-15 Secr Defence Electro-optic device
US4762397A (en) * 1987-06-19 1988-08-09 Hughes Aircraft Company Optical phase conjugator with spatially resolvable thresholding utilizing liquid crystal light valve
JPH01306802A (en) * 1988-06-06 1989-12-11 Nippon Telegr & Teleph Corp <Ntt> Optical frequency filter
JPH0284621A (en) * 1988-09-21 1990-03-26 Nec Corp Wavelength filter device
JPH0816739B2 (en) * 1988-12-22 1996-02-21 日本電気株式会社 Wavelength add / drop element

Also Published As

Publication number Publication date
CA2088372C (en) 1999-10-05
EP0547077A1 (en) 1993-06-23
JPH06500408A (en) 1994-01-13
JP2587743B2 (en) 1997-03-05
EP0547077A4 (en) 1994-02-16
WO1992004653A1 (en) 1992-03-19

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