EP 3304146 A1 20180411 - OPTICAL SENSOR FOR MEASURING TRACE COMPONENTS IN LIQUIDS AND/OR GASES
Title (en)
OPTICAL SENSOR FOR MEASURING TRACE COMPONENTS IN LIQUIDS AND/OR GASES
Title (de)
OPTISCHER SENSOR ZUR MESSUNG VON SPURENBESTANDTEILEN IN FLÜSSIGKEITEN UND/ODER GASEN
Title (fr)
CAPTEUR OPTIQUE POUR LA MESURE DE CONSTITUANTS À L'ÉTAT DE TRACE DANS DES LIQUIDES ET/OU DES GAZ
Publication
Application
Priority
- DE 102015007206 A 20150602
- EP 2016000880 W 20160527
Abstract (en)
[origin: WO2016192845A1] The optical sensor serves to measure trace components in liquids and/or gases and has at least one optical resonator (2) which has at least one porous layer, the porous layers whereof serve to receive moisture particles. The resonator (2) is a ring resonator, with which at least one optical waveguide (1) is associated. Light is fed into the waveguide (1), which is partially decoupled into the ring resonator (2). Interference with the waveguide (1) arises in the ring resonator (2) because of the partially very high fineness thereof, into which waveguide a light spectrum is radiated. A comb of wave length minima can be filtered out of the transmission spectrum. If trace components are deposited in the pores of the ring resonator (2), the refractive index and the optical path length are changed, which leads to wavelength shift of the filtered wavelength minima. The amount of trace components can be determined from the wavelength shift.
IPC 8 full level
G01N 21/77 (2006.01); G01N 21/78 (2006.01); G01N 21/81 (2006.01); G01N 21/85 (2006.01); G01N 33/22 (2006.01); G02B 6/293 (2006.01)
CPC (source: EP)
G01N 21/7746 (2013.01); G01N 21/783 (2013.01); G01N 21/81 (2013.01); G01N 33/225 (2013.01); G01N 2021/7726 (2013.01); G01N 2021/7776 (2013.01); G01N 2021/8585 (2013.01); G01N 2201/1211 (2013.01); G02B 6/29343 (2013.01)
Citation (search report)
See references of WO 2016192845A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102015007206 A1 20161208; EP 3304146 A1 20180411; WO 2016192845 A1 20161208
DOCDB simple family (application)
DE 102015007206 A 20150602; EP 16726280 A 20160527; EP 2016000880 W 20160527