GB2377331A - A tunable filter - Google Patents

A tunable filter

Info

Publication number
GB2377331A
GB2377331A GB0224889A GB0224889A GB2377331A GB 2377331 A GB2377331 A GB 2377331A GB 0224889 A GB0224889 A GB 0224889A GB 0224889 A GB0224889 A GB 0224889A GB 2377331 A GB2377331 A GB 2377331A
Authority
GB
United Kingdom
Prior art keywords
wavelength
carrying signals
input
tunable filter
output
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.)
Withdrawn
Application number
GB0224889A
Other versions
GB0224889D0 (en
Inventor
Kenneth Guild
Michael O'mahony
Anna Tzanakaki
Dimitra Simeonidou
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.)
Ditech Networks Inc
Original Assignee
Ditech Networks 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
Priority claimed from GBGB0007549.9A external-priority patent/GB0007549D0/en
Priority claimed from GB0007554A external-priority patent/GB0007554D0/en
Priority claimed from GB0019868A external-priority patent/GB0019868D0/en
Application filed by Ditech Networks Inc filed Critical Ditech Networks Inc
Publication of GB0224889D0 publication Critical patent/GB0224889D0/en
Publication of GB2377331A publication Critical patent/GB2377331A/en
Withdrawn legal-status Critical Current

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
    • G02F2/00—Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light
    • G02F2/004—Transferring the modulation of modulated light, i.e. transferring the information from one optical carrier of a first wavelength to a second optical carrier of a second wavelength, e.g. all-optical wavelength converter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • 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
    • G02F2/00—Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light
    • G02F2/004—Transferring the modulation of modulated light, i.e. transferring the information from one optical carrier of a first wavelength to a second optical carrier of a second wavelength, e.g. all-optical wavelength converter
    • G02F2/006—All-optical wavelength conversion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H04Q2011/0007—Construction
    • H04Q2011/0009—Construction using wavelength filters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H04Q2011/0007—Construction
    • H04Q2011/0011—Construction using wavelength conversion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H04Q2011/0007—Construction
    • H04Q2011/0013—Construction using gating amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H04Q2011/0007—Construction
    • H04Q2011/0016—Construction using wavelength multiplexing or demultiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0005—Switch and router aspects
    • H04Q2011/0007—Construction
    • H04Q2011/0018—Construction using tunable transmitters or receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0073—Provisions for forwarding or routing, e.g. lookup tables
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0086—Network resource allocation, dimensioning or optimisation

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)

Abstract

An optical tunable filter/wavelength converter comprises an input for multiple wavelength traffic carrying signals g <SB>1</SB>- g <SB>m</SB>, an output for convened wavelength carrying signals ( g <SB>1</SB>'- g <SB>m</SB>'), means (20) for routing each of the traffic carrying signals through a demultiplexer to an individual semiconductor optical amplifier (SOA) (22) or to an interferometer arrangement. A laser source (26) provides a further input wavelength to the SOAs, or to the interferometer arrangements, to enable cross-gain or cross-phase modulation from the input signal which thereby provides the converted signal. Means is provided for selectively routing the converted signal to the output.
GB0224889A 2000-03-28 2001-03-28 A tunable filter Withdrawn GB2377331A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GBGB0007549.9A GB0007549D0 (en) 2000-03-28 2000-03-28 A wavelength converter
GB0007554A GB0007554D0 (en) 2000-03-28 2000-03-28 A tunable filter
GB0019868A GB0019868D0 (en) 2000-08-11 2000-08-11 A tunable filter/wavelength converter
PCT/GB2001/001372 WO2001074112A1 (en) 2000-03-28 2001-03-28 A tunable filter

Publications (2)

Publication Number Publication Date
GB0224889D0 GB0224889D0 (en) 2002-12-04
GB2377331A true GB2377331A (en) 2003-01-08

Family

ID=27255627

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0224889A Withdrawn GB2377331A (en) 2000-03-28 2001-03-28 A tunable filter

Country Status (3)

Country Link
AU (1) AU4260901A (en)
GB (1) GB2377331A (en)
WO (1) WO2001074112A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100361034B1 (en) * 2000-12-19 2002-11-21 한국과학기술연구원 All-Optical Logic AND in a SOA-Based Mach-Zehnder Inteferometer
KR100446534B1 (en) * 2002-11-22 2004-09-01 삼성전자주식회사 Wavelength converter and wavelength interchanging cross-connector using the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0946077A2 (en) * 1998-03-26 1999-09-29 Nec Corporation An optical switching apparatus using wavelength division multiplexing technology

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0946077A2 (en) * 1998-03-26 1999-09-29 Nec Corporation An optical switching apparatus using wavelength division multiplexing technology

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
ASGHARI M ET AL:"WAVEGUIDE CONVERSION USING SEMICONDUCTOR OPTICAL AMPLIFIERS"JOURNAL OF LIGHTWAVE TECHNOLOGY,US,IEEE.NEW YORK,vol.15,no.7,1 JULY 1997(1997-07-01),pages 1181-1190,XP000693475 ISSN:0733-8724 the whole document *
GLANCE B ET AL:"APPLICATIONS OF THE INTEGRATED WAVEGUIDE GRATING ROUTER"JOURNAL OF LIGHTWAVE TECHNOLOGY,US,IEEE.NEW YORK,vol.12,no.6,1 JUNE 1994(1994-06-01),pages 957-962,XP000484211 ISSN:0733-8724 figures 4,6 *
KLOCH A ET AL:"WAVELENGTH CONVERTERS"IEICE TRANSACTIONS ON ELECTRONICS,INSTITUTE OF ELECTRONICS INFORMATION AND COMM.ENG.TOKYO,JP,vol.E82-C,no.8,August 1999(1999-08),pages 1475-1485,XP000930705 ISSN:0916-8524 figure 3 *
YOSHIDA J-I ET AL:"RECENT RESEARCH TRENDS AND ISSUES IN PHOTONIC SWITCHING DEVICES"NTT REVIEW,TELECOMMUNICATIONS ASSOCIATION,TOKYO,JP,vol.7,no.5,1 September 1995(1995-09-01),pages 24-29,XP000536276 figure 3 *

Also Published As

Publication number Publication date
GB0224889D0 (en) 2002-12-04
WO2001074112A1 (en) 2001-10-04
AU4260901A (en) 2001-10-08

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)