Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO1987003676) FIBRE OPTIC DEVICES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1987/003676 International Application No.: PCT/GB1986/000738
Publication Date: 18.06.1987 International Filing Date: 04.12.1986
IPC:
G01D 5/353 (2006.01) ,G01K 11/32 (2006.01) ,G01N 21/43 (2006.01) ,G02B 6/255 (2006.01) ,G02B 6/26 (2006.01) ,G02B 6/28 (2006.01) ,G02B 6/34 (2006.01) ,G02F 1/01 (2006.01)
G PHYSICS
01
MEASURING; TESTING
D
MEASURING 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
5
Mechanical 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
26
using optical means, i.e. using infra-red, visible or ultra-violet light
32
with attenuation or whole or partial obturation of beams of light
34
the beams of light being detected by photocells
353
influencing the transmission properties of an optical fibre
G PHYSICS
01
MEASURING; TESTING
K
MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
11
Measuring temperature based on physical or chemical changes not covered by group G01K3/, G01K5/, G01K7/, or G01K9/202
32
using changes in transmission, scattering or fluorescence in optical fibres
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
17
Systems in which incident light is modified in accordance with the properties of the material investigated
41
Refractivity; Phase-affecting properties, e.g. optical path length
43
by measuring critical angle
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6
Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
24
Coupling light guides
255
Splicing of light guides, e.g. by fusion or bonding
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6
Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
24
Coupling light guides
26
Optical coupling means
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6
Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
24
Coupling light guides
26
Optical coupling means
28
having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6
Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
24
Coupling light guides
26
Optical coupling means
34
utilising prism or grating
G PHYSICS
02
OPTICS
F
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1
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
01
for the control of the intensity, phase, polarisation or colour
Applicants:
THE GENERAL ELECTRIC COMPANY, P.L.C. [GB/GB]; 1 Stanhope Gate London W1A 1EH, GB (AllExceptUS)
GEORGIOU, George, Antony [GB/GB]; GB (UsOnly)
BOUCOUVALAS, Anthony, Christos [GB/GB]; GB (UsOnly)
Inventors:
GEORGIOU, George, Antony; GB
BOUCOUVALAS, Anthony, Christos; GB
Agent:
KIRBY, Harold, Victor, Albert; The General Electric Company, p.l.c. Central Patent Department, Wembley Office Hirst Research Centre, East Lane Wembley Middlesex HA9 7PP, GB
Priority Data:
852986204.12.1985GB
852986304.12.1985GB
Title (EN) FIBRE OPTIC DEVICES
(FR) DISPOSITIFS A FIBRES OPTIQUES
Abstract:
(EN) A fibre optic device which can be used as an attenuator or a sensor. The fiber has a biconical taper which can be immersed in a medium having a higher refractive index so that light transmission through the fibre can be used as a sensor in measuring temperature, refractive index. When used as a tuneable attenuator electrodes are mounted in contact with the medium so that it can be heated to vary transmissivity through the fibre.
(FR) Dispositif à fibres optiques pouvant être utilisé comme atténuateur ou comme capteur. La fibre présente une conicité biconique et peut être immergée dans un milieu possédant un indice de réfraction plus élevé de sorte que la transmission de lumière à travers la fibre peut être utilisée comme un capteur pour mesurer la température ou l'indice de réfraction. Lorsque le dispositif est utilisé comme atténuateur accordable, des électrodes sont montées en contact avec le milieu de manière à pouvoir le chauffer pour faire varier le coefficient de transmission à travers la fibre.
Designated States: JP, US
European Patent Office (AT, BE, CH, DE, FR, GB, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0248052