Invention Grant
- Patent Title: Evanescent wave multimode optical waveguide sensor with continuous redistribution of optical power between the modes
- Patent Title (中): 衰减波多模光波导传感器,在模式之间连续重新分配光功率
-
Application No.: US11757584Application Date: 2007-06-04
-
Publication No.: US07864321B2Publication Date: 2011-01-04
- Inventor: Serge Caron , Lia Mouslinkina , Claude Pare , André Fougeres
- Applicant: Serge Caron , Lia Mouslinkina , Claude Pare , André Fougeres
- Applicant Address: CA Quebec, QC
- Assignee: Institut National D'Optique
- Current Assignee: Institut National D'Optique
- Current Assignee Address: CA Quebec, QC
- Agency: Ogilvy Renault LLP
- Main IPC: G01N15/06
- IPC: G01N15/06

Abstract:
There is provided an evanescent wave multimode optical waveguide sensitive to a chemical species or to a physical parameter. The optical waveguide comprises a core and a cladding having a cladding refractive index lower than that of the core for guiding light to be propagated in the optical waveguide. The cladding defines with the core an optical waveguide providing mode coupling. A chemical indicator is provided in the cladding for causing a variation of the optical absorption of the cladding as a function of the chemical species or the physical parameter. The cladding is interrogated by the evanescent wave of the propagated light. The mode coupling causes unabsorbed light power to be redistributed among the multiple modes while light propagates along the optical waveguide.
Public/Granted literature
- US20080297799A1 EVANESCENT WAVE MULTIMODE OPTICAL WAVEGUIDE AND SENSOR WITH HIGH MODE COUPLING Public/Granted day:2008-12-04
Information query