AU2001275092A1 - Device and method for optical performance monitoring in an optical communications network - Google Patents

Device and method for optical performance monitoring in an optical communications network

Info

Publication number
AU2001275092A1
AU2001275092A1 AU2001275092A AU7509201A AU2001275092A1 AU 2001275092 A1 AU2001275092 A1 AU 2001275092A1 AU 2001275092 A AU2001275092 A AU 2001275092A AU 7509201 A AU7509201 A AU 7509201A AU 2001275092 A1 AU2001275092 A1 AU 2001275092A1
Authority
AU
Australia
Prior art keywords
optical
communications network
performance monitoring
optical performance
optical communications
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.)
Abandoned
Application number
AU2001275092A
Inventor
Gregory G. Capiello
Mikhail N. Sokolskiy
Michael Sussman
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.)
Lightchip Inc
Original Assignee
Lightchip Inc
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 Lightchip Inc filed Critical Lightchip Inc
Publication of AU2001275092A1 publication Critical patent/AU2001275092A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02Details
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02Details
    • G01J3/0205Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
    • G01J3/0208Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using focussing or collimating elements, e.g. lenses or mirrors; performing aberration correction
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/12Generating the spectrum; Monochromators
    • G01J3/14Generating the spectrum; Monochromators using refracting elements, e.g. prisms
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/12Generating the spectrum; Monochromators
    • G01J3/18Generating the spectrum; Monochromators using diffraction elements, e.g. grating
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28Investigating the spectrum
    • G01J3/2803Investigating the spectrum using photoelectric array detector
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10Beam splitting or combining systems
    • G02B27/108Beam splitting or combining systems for sampling a portion of a beam or combining a small beam in a larger one, e.g. wherein the area ratio or power ratio of the divided beams significantly differs from unity, without spectral selectivity
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10Beam splitting or combining systems
    • G02B27/1086Beam splitting or combining systems operating by diffraction only
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10Beam splitting or combining systems
    • G02B27/12Beam splitting or combining systems operating by refraction only
    • G02B27/123The splitting element being a lens or a system of lenses, including arrays and surfaces with refractive power
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10Beam splitting or combining systems
    • G02B27/12Beam splitting or combining systems operating by refraction only
    • G02B27/126The splitting element being a prism or prismatic array, including systems based on total internal reflection
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/18Diffraction gratings
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/26Optical coupling means
    • G02B6/28Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29304Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating
    • G02B6/29305Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by diffraction, e.g. grating as bulk element, i.e. free space arrangement external to a light guide
    • G02B6/2931Diffractive element operating in reflection
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/26Optical coupling means
    • G02B6/28Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29379Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
    • G02B6/2938Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM
    • G02B6/29382Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device for multiplexing or demultiplexing, i.e. combining or separating wavelengths, e.g. 1xN, NxM including at least adding or dropping a signal, i.e. passing the majority of signals
    • G02B6/29385Channel monitoring, e.g. by tapping
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/26Optical coupling means
    • G02B6/28Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29379Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means characterised by the function or use of the complete device
    • G02B6/29397Polarisation insensitivity
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/42Coupling light guides with opto-electronic elements
    • G02B6/4201Packages, e.g. shape, construction, internal or external details
    • G02B6/4204Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4215Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical elements being wavelength selective optical elements, e.g. variable wavelength optical modules or wavelength lockers
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/008Mountings, adjusting means, or light-tight connections, for optical elements with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/028Mountings, adjusting means, or light-tight connections, for optical elements for lenses with means for compensating for changes in temperature or for controlling the temperature; thermal stabilisation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/077Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0795Performance monitoring; Measurement of transmission parameters
    • H04B10/07955Monitoring or measuring power
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J14/00Optical multiplex systems
    • H04J14/02Wavelength-division multiplex systems
    • H04J14/03WDM arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J14/00Optical multiplex systems
    • H04J14/02Wavelength-division multiplex systems
    • H04J14/0201Add-and-drop multiplexing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Optical Communication System (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
AU2001275092A 2000-06-02 2001-06-01 Device and method for optical performance monitoring in an optical communications network Abandoned AU2001275092A1 (en)

Applications Claiming Priority (11)

Application Number Priority Date Filing Date Title
US20847700P 2000-06-02 2000-06-02
US20848200P 2000-06-02 2000-06-02
US20848300P 2000-06-02 2000-06-02
US20847800P 2000-06-02 2000-06-02
US60/208,482 2000-06-02
US60/208,477 2000-06-02
US60/208,483 2000-06-02
US60/208,478 2000-06-02
US09/724,804 US6577786B1 (en) 2000-06-02 2000-11-28 Device and method for optical performance monitoring in an optical communications network
US09/724,804 2000-11-28
PCT/US2001/017696 WO2001095540A2 (en) 2000-06-02 2001-06-01 Device and method for optical performance monitoring in an optical communications network

Publications (1)

Publication Number Publication Date
AU2001275092A1 true AU2001275092A1 (en) 2001-12-17

Family

ID=27539585

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001275092A Abandoned AU2001275092A1 (en) 2000-06-02 2001-06-01 Device and method for optical performance monitoring in an optical communications network

Country Status (5)

Country Link
US (1) US6577786B1 (en)
EP (1) EP1312181A2 (en)
AU (1) AU2001275092A1 (en)
CA (1) CA2410928A1 (en)
WO (1) WO2001095540A2 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040196556A1 (en) * 2000-06-02 2004-10-07 Cappiello Gregory G. Diffraction grating for wavelength division multiplexing/demultiplexing devices
US6859317B1 (en) * 2000-06-02 2005-02-22 Confluent Photonics Corporation Diffraction grating for wavelength division multiplexing/demultiplexing devices
SE0100602L (en) * 2001-02-22 2002-08-23 Multichannel Instr Ab Light characterization system
CA2413218C (en) * 2002-11-29 2015-01-27 Measurement Microsystems A-Z Inc. Flash optical performance monitor
DE10304551A1 (en) * 2003-02-04 2004-08-12 Mann + Hummel Gmbh Control element with position detection
US20060018597A1 (en) * 2004-07-23 2006-01-26 Sioptical, Inc. Liquid crystal grating coupling
US7342659B2 (en) * 2005-01-21 2008-03-11 Carl Zeiss Meditec, Inc. Cross-dispersed spectrometer in a spectral domain optical coherence tomography system
US7456957B2 (en) * 2005-08-03 2008-11-25 Carl Zeiss Meditec, Inc. Littrow spectrometer and a spectral domain optical coherence tomography system with a Littrow spectrometer
US8531646B2 (en) * 2007-09-11 2013-09-10 Kent State University Tunable liquid crystal devices, devices using same, and methods of making and using same
US8111988B1 (en) * 2008-06-10 2012-02-07 Lockheed Martin Corporation Method for monitoring wavelength-division multiplexed signal
US9715001B2 (en) * 2011-06-13 2017-07-25 Commscope Technologies Llc Mobile location in a remote radio head environment
US20140086579A1 (en) * 2012-09-27 2014-03-27 Avago Technologies General Ip (Singapore) Pte. Ltd Optical coupling system, an optical communications module that incorporates the optical coupling system, and a method of using the optical coupling system
US10801890B1 (en) 2018-12-17 2020-10-13 Applied Materials, Inc. Measurement system and a method of diffracting light
CN113677952A (en) * 2019-04-15 2021-11-19 应用材料公司 Measurement system and method for diffracting light
US10921721B1 (en) 2019-09-13 2021-02-16 Applied Materials, Inc. Measurement system and grating pattern array

Family Cites Families (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4012843A (en) 1973-04-25 1977-03-22 Hitachi, Ltd. Concave diffraction grating and a manufacturing method thereof
US4198117A (en) 1976-12-28 1980-04-15 Nippon Electric Co., Ltd. Optical wavelength-division multiplexing and demultiplexing device
US4111524A (en) 1977-04-14 1978-09-05 Bell Telephone Laboratories, Incorporated Wavelength division multiplexer
US4153330A (en) 1977-12-01 1979-05-08 Bell Telephone Laboratories, Incorporated Single-mode wavelength division optical multiplexer
JPS6033242B2 (en) 1978-07-10 1985-08-01 株式会社日立製作所 Diffraction grating engraving device
US4246338A (en) 1979-03-02 1981-01-20 Kaplan Sam H Additive color photographic film assembly with diffraction grating
US4299488A (en) 1979-11-23 1981-11-10 Bell Telephone Laboratories, Incorporated Time-division multiplexed spectrometer
US4343532A (en) 1980-06-16 1982-08-10 General Dynamics, Pomona Division Dual directional wavelength demultiplexer
US4387955A (en) 1981-02-03 1983-06-14 The United States Of America As Represented By The Secretary Of The Air Force Holographic reflective grating multiplexer/demultiplexer
US4426130A (en) 1981-02-19 1984-01-17 Rca Corporation Semi-thick transmissive and reflective sinusoidal phase grating structures
NL8104123A (en) 1981-09-07 1983-04-05 Philips Nv OPTICAL MULTIPLEX AND DEMULTIPLEX DEVICE.
US4652080A (en) 1982-06-22 1987-03-24 Plessey Overseas Limited Optical transmission systems
US4846552A (en) 1986-04-16 1989-07-11 The United States Of America As Represented By The Secretary Of The Air Force Method of fabricating high efficiency binary planar optical elements
US4736360A (en) 1986-07-21 1988-04-05 Polaroid Corporation Bulk optic echelon multi/demultiplexer
DE3883638T2 (en) 1987-06-27 1994-04-21 Shimadzu Corp Flexible replica grating and optical multiplexer / demultiplexer using such a grating.
US5007709A (en) 1987-12-28 1991-04-16 Matsushita Electric Industrial Co., Ltd. Diffraction grating and manufacturing method thereof
US4926412A (en) 1988-02-22 1990-05-15 Physical Optics Corporation High channel density wavelength division multiplexer with defined diffracting means positioning
US5026131A (en) 1988-02-22 1991-06-25 Physical Optics Corporation High channel density, broad bandwidth wavelength division multiplexer with highly non-uniform Bragg-Littrow holographic grating
US4857726A (en) 1988-02-29 1989-08-15 Allied-Signal Inc. Method to decode relative spectral data
DE3852296T2 (en) 1988-03-18 1995-04-13 Instruments Sa Diffraction grating and manufacturing process therefor.
JPH01306886A (en) 1988-06-03 1989-12-11 Canon Inc Volume phase type diffraction grating
US4930855A (en) 1988-06-06 1990-06-05 Trw Inc. Wavelength multiplexing of lasers
US5007708A (en) 1988-07-26 1991-04-16 Georgia Tech Research Corporation Technique for producing antireflection grating surfaces on dielectrics, semiconductors and metals
US5085496A (en) 1989-03-31 1992-02-04 Sharp Kabushiki Kaisha Optical element and optical pickup device comprising it
US5061025A (en) 1990-04-13 1991-10-29 Eastman Kodak Company Hologon scanner with beam shaping stationary diffraction grating
US5245404A (en) 1990-10-18 1993-09-14 Physical Optics Corportion Raman sensor
US5216680A (en) 1991-07-11 1993-06-01 Board Of Regents, The University Of Texas System Optical guided-mode resonance filter
US5233405A (en) 1991-11-06 1993-08-03 Hewlett-Packard Company Optical spectrum analyzer having double-pass monochromator
US5403040A (en) 1992-03-30 1995-04-04 The Standard Register Company Optically variable and machine-readable device for use on security documents
US5422745A (en) 1992-10-30 1995-06-06 The United States Of America As Represented By The Secretary Of The Navy Preparation of permanent photowritten optical diffraction gratings in irradiated glasses
US5457573A (en) 1993-03-10 1995-10-10 Matsushita Electric Industrial Co., Ltd. Diffraction element and an optical multiplexing/demultiplexing device incorporating the same
JP3119540B2 (en) 1993-04-12 2000-12-25 松下電器産業株式会社 Light tap
US5420719A (en) 1993-09-15 1995-05-30 Lumonics Inc. Laser beam frequency doubling system
DE4435928A1 (en) 1993-10-07 1995-04-20 Hitachi Ltd Optical transmitting and receiving module and optical communication system using this
US5526155A (en) 1993-11-12 1996-06-11 At&T Corp. High-density optical wavelength division multiplexing
US5450510A (en) 1994-06-09 1995-09-12 Apa Optics, Inc. Wavelength division multiplexed optical modulator and multiplexing method using same
US5793912A (en) 1994-06-09 1998-08-11 Apa Optics, Inc. Tunable receiver for a wavelength division multiplexing optical apparatus and method
US5835458A (en) 1994-09-09 1998-11-10 Gemfire Corporation Solid state optical data reader using an electric field for routing control
US5544268A (en) 1994-09-09 1996-08-06 Deacon Research Display panel with electrically-controlled waveguide-routing
US5583683A (en) 1995-06-15 1996-12-10 Optical Corporation Of America Optical multiplexing device
FR2738432B1 (en) 1995-09-01 1997-09-26 Hamel Andre OPTICAL COMPONENT SUITABLE FOR MONITORING A MULTI-WAVELENGTH LENGTH AND INSERTION-EXTRACTION MULTIPLEXER USING THE SAME, APPLICATION TO OPTICAL NETWORKS
US5907436A (en) 1995-09-29 1999-05-25 The Regents Of The University Of California Multilayer dielectric diffraction gratings
US5777763A (en) 1996-01-16 1998-07-07 Bell Communications Research, Inc. In-line optical wavelength reference and control module
US6002522A (en) 1996-06-11 1999-12-14 Kabushiki Kaisha Toshiba Optical functional element comprising photonic crystal
US5914811A (en) 1996-08-30 1999-06-22 University Of Houston Birefringent grating polarizing beam splitter
AU5113898A (en) 1996-12-02 1998-06-29 Xiaoli Fu Grating-in-etalon polarization insensitive wavelength division multiplexing devices
US6084695A (en) 1997-02-14 2000-07-04 Photonetics Optical fiber wavelength multiplexer and demutiplexer
US5796479A (en) 1997-03-27 1998-08-18 Hewlett-Packard Company Signal monitoring apparatus for wavelength division multiplexed optical telecommunication networks
US5946128A (en) 1997-08-15 1999-08-31 The United States Of America As Represented By The Secretary Of Commerce Grating assisted acousto-optic tunable filter and method
WO1999041858A1 (en) 1998-02-13 1999-08-19 Apa Optics, Inc. Multiplexer and demultiplexer for single mode optical fiber communication links
US6647209B1 (en) 1998-02-13 2003-11-11 Apa Optics, Inc. Multiplexer and demultiplexer for single mode optical fiber communication links
WO1999048197A2 (en) 1998-03-16 1999-09-23 Trex Communications Corporation Piezoelectric difraction grating light steering device
US5937113A (en) 1998-04-17 1999-08-10 National Research Council Of Canada Optical grating-based device having a slab waveguide polarization compensating region
WO1999067609A1 (en) 1998-06-23 1999-12-29 Ditech Corporation Optical network monitor
US6304692B1 (en) 1999-09-03 2001-10-16 Zolo Technologies, Inc. Echelle grating dense wavelength division multiplexer/demultiplexer with two dimensional single channel array
DE50000086D1 (en) 2000-01-18 2002-02-21 Acterna Eningen Gmbh Optical reflection grating and method for its optimization and optical spectrometer
US6487019B2 (en) 2000-03-27 2002-11-26 Chromaplex, Inc. Optical diffraction grating structure with reduced polarization sensitivity
WO2002006860A1 (en) 2000-07-13 2002-01-24 Network Photonics, Inc. Diffraction grating with reduced polarization-dependent loss

Also Published As

Publication number Publication date
EP1312181A2 (en) 2003-05-21
US6577786B1 (en) 2003-06-10
WO2001095540A3 (en) 2003-02-27
CA2410928A1 (en) 2001-12-13
WO2001095540A2 (en) 2001-12-13

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