Simultaneous interrogation of multi wavelength-modulated...

Details Simultaneous interrogation of multi wavelength-modulated... Simultaneous interrogation of multi wavelength-modulated...

G - Physics

08

C

G08C 15/02 (2006.01) G01D 5/353 (2006.01) G08C 23/06 (2006.01) H04B 10/08 (2006.01)

Patent

CA 2518173

A compact interrogator for the simultaneous interrogation of multi wavelength- modulated fiber optical sensors, includes a planar waveguide based demultiplexer receiving input signals from the sensors. An array of detectors is coupled to output waveguides of the demultiplexer corresponding to different nominal wavelengths. A tuning element matches the nominal wavelengths of the output waveguide to the input signals from.the respective sensors to find the wavelengths of the individual sensors to be interrogated.

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