Multiwavelength optical sensors

专利名称：Multiwavelength optical sensors

发明人：CORIN BARRY EDMUND GAWITH,GREGORY

DANIEL EMMERSON,PETER GEORGE ROBINSMITH

申请号：AU20052633申请日：20050707公开号：AU20052633B2公开日：20100805

摘要：An optical sensor comprises at least two planar Bragg gratings defined on asingle substrate and arranged to receive light from a light source, each grating having awavelength filtering response that varies with an effective modal index experienced bylight propagating in the Bragg grating and a Bragg wavelength different to those of theother gratings, and at least one sample window overlying one or more of the gratingsthat can receive a sample of fluid that affects the effective modal index and response ofthe grating, the gratings filtering the light and outputting the filtered light for spectralanalysis, from which the refractive index and related properties of the fluid can bedetermined. One or more of the gratings can be a reference grating used to compensatefor temperature and other disturbances to the sensors. Gratings may have individualsample windows for testing separate fluid samples, or may share a common window sothat a single fluid can be tested using several gratings.

申请人：UNIVERSITY OF SOUTHAMPTON

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