Wavelength monitored and stabilized source

Details Wavelength monitored and stabilized source Wavelength monitored and stabilized source

G - Physics

02

F

G02F 1/00 (2006.01) G01C 19/72 (2006.01) G01D 5/32 (2006.01) G02B 27/10 (2006.01)

Patent

CA 2639462

Methods and apparatus for sampling techniques can constantly monitor a spectral output from a broadband source in order to control a central wavelength of interrogation light supplied by the source for input to a sensor. A first portion of light output from the broadband source passes through a controller module for spectral analysis and referencing to provide measurements that can be used as feedback to actively modify a second portion of the light from the source. This modified second portion thereby controls the central wavelength to ensure accurate determination of sensor response signals received at a receiver.

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