Fiber bragg grating sensor interrogator and manufacture thereof
First Claim
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1. A method of monitoring the status of a plurality of FBG transducers distributed along a single optical fiber, comprising interrogating said FBC transducers with a broadband spectrum light source couple to said fiber throuah an optics block having an integrated planar wave guide structure;
- and receiving at ports located along the edges of said block the respective digital signatures of said FBG transducers in response to said interrogating.
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Abstract
The invention discloses multi-channel fiber Bragg grating (FBG) interrogation systems and manufacture thereof. The multi-channel fiber Bragg-grating sensor interrogation unit comprises at least one integrated optic sensor microchip and a signal processing IC-electronics unit in a miniaturized, telecommunications standard, hermetically sealed 2-cm×5-cm SFF single fiber package.
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11 Claims
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1. A method of monitoring the status of a plurality of FBG transducers distributed along a single optical fiber, comprising
interrogating said FBC transducers with a broadband spectrum light source couple to said fiber throuah an optics block having an integrated planar wave guide structure; - and
receiving at ports located along the edges of said block the respective digital signatures of said FBG transducers in response to said interrogating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. The method of claim 1, wherein said interrogating comprises transmitting optical signals to and from said fiber Bragg grating sensor FBG array and demodulating the wavelength encoded signal from the FBG sensor to an electrical signal as a function of the environmental state of the FBG array. 12-20. (canceled)
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