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1. WO1992014990 - SEQUENTIAL DEMULTIPLEXING RECEIVER FOR AN OPTICAL SENSOR ARRAY WITH SPECTRAL MODULATION CODING

Publication Number WO/1992/014990
Publication Date 03.09.1992
International Application No. PCT/FR1992/000141
International Filing Date 13.02.1992
IPC
G01D 5/26 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
G01D 5/353 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
353influencing the transmission properties of an optical fibre
CPC
G01D 5/266
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
266by interferometric means
G01D 5/35383
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
353influencing the transmission properties of an optical fibre
35383using multiple sensor devices using multiplexing techniques
Applicants
  • BERTIN & CIE [FR]/[FR] (AllExceptUS)
  • LEQUIME, Michel [FR]/[FR] (UsOnly)
  • SANSONETTI, Pierre [FR]/[FR] (UsOnly)
Inventors
  • LEQUIME, Michel
  • SANSONETTI, Pierre
Agents
  • CABINET ORES
Priority Data
91/0173314.02.1991FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) SEQUENTIAL DEMULTIPLEXING RECEIVER FOR AN OPTICAL SENSOR ARRAY WITH SPECTRAL MODULATION CODING
(FR) RECEPTEUR DE DEMULTIPLEXAGE SEQUENTIEL POUR UN RESEAU DE CAPTEURS OPTIQUES A CODAGE DE MODULATION SPECTRALE
Abstract
(EN)
A sequential demultiplexing receiver for a sensor array (20) with spectral modulation coding comprises essentially an integrated optical circuit consisting of a birefringent or semiconductor substrate (34) on which high frequency sequentially activated electro-optic mode couplers or mode converters (38) are formed to generate differences in optical path matched to those of the sensors.
(FR)
Récepteur de démultiplexage en séquentiel pour un réseau de capteurs (20) à codage de modulation spectrale, ce récepteur étant constitué essentiellement d'un circuit optique intégré comprenant un substrat (34) biréfringent ou semi-conducteur sur lequel sont formés des coupleurs de modes ou des convertisseurs de modes (38) à effet électro-optique activés séquentiellement à fréquence élevée pour générer des différences de marche optique accordées sur celles des capteurs.
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