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1. WO1991000632 - OPTICAL CARRIER GENERATION USING STIMULATED BRILLOUIN SCATTERING

Publication Number WO/1991/000632
Publication Date 10.01.1991
International Application No. PCT/GB1990/001008
International Filing Date 29.06.1990
Chapter 2 Demand Filed 18.01.1991
IPC
G01D 5/34 2006.01
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
26using optical means, i.e. using infra-red, visible or ultra-violet light
32with attenuation or whole or partial obturation of beams of light
34the beams of light being detected by photocells
G01K 11/32 2006.01
GPHYSICS
01MEASURING; TESTING
KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
11Measuring temperature based on physical or chemical changes not covered by group G01K3/, G01K5/, G01K7/, or G01K9/202
32using changes in transmission, scattering or fluorescence in optical fibres
H01S 3/30 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
30using scattering effects, e.g. stimulated Brillouin or Raman effects
CPC
G01D 5/344
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
26characterised by optical transfer means, i.e. using infra-red, visible, or ultra-violet light
32with attenuation or whole or partial obturation of beams of light
34the beams of light being detected by photocells
344using polarisation
G01K 11/32
GPHYSICS
01MEASURING; TESTING
KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
11Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
32using changes in transmission, scattering or fluorescence in optical fibres
H01S 3/302
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
3Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
30using scattering effects, e.g. stimulated Brillouin or Raman effects
302in an optical fibre
Applicants
  • NATIONAL RESEARCH DEVELOPMENT CORPORATION [GB/GB]; 101 Newington Causeway London SE1 6BU, GB (AllExceptUS)
  • CRANFIELD INSTITUTE OF TECHNOLOGY [GB/GB]; Cranfield Bedford MK43 0AL, GB (AllExceptUS)
  • CULVERHOUSE, David [GB/GB]; GB (UsOnly)
  • FARAHI, Faramarz [IR/GB]; GB (UsOnly)
  • JACKSON, David, Alfred [GB/GB]; GB (UsOnly)
  • PANNELL, Christopher, Noel [GB/GB]; GB (UsOnly)
  • TATAM, Ralph, Peter [GB/GB]; GB (UsOnly)
Inventors
  • CULVERHOUSE, David; GB
  • FARAHI, Faramarz; GB
  • JACKSON, David, Alfred; GB
  • PANNELL, Christopher, Noel; GB
  • TATAM, Ralph, Peter; GB
Agents
  • CULLIS, Roger; National Research Development Corporation Patent Department 101 Newington Causeway London SE1 6BU, GB
Priority Data
8914988.429.06.1989GB
8926607.624.11.1989GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) OPTICAL CARRIER GENERATION USING STIMULATED BRILLOUIN SCATTERING
(FR) PRODUCTION D'ONDES PORTEUSES OPTIQUES PAR EFFET DE DIFFUSION DE BRILLOUIN STIMULE
Abstract
(EN)
Apparatus for producing signal frequency shifts by stimulated Brillouin scattering comprises a pair of optical fibres (112, 113) or a single high birefringence fibre which are illuminated by a laser beam to generate two back-scattered signals by stimulated Brillouin scattering and a mixer (117) to combine the two back-scattered signals to produce a beat frequency from the combined signals.
(FR)
L'appareil décrit, qui sert à produire des décalages de fréquences de signaux par effet de diffusion de Brillouin stimulé, comprend une paire de fibres optiques (112, 113) ou une seule fibre à biréfringence élevée, qui sont soumises au rayonnement d'un faisceau laser de façon à produire des signaux rétrodiffusés par effet de diffusion de Brillouin stimulé, ainsi qu'un mélangeur (117) destiné à combiner les deux signaux rétrodiffusés pour produire une fréquence de battement à partir des signaux combinés.
Also published as
Latest bibliographic data on file with the International Bureau