We model a multi-cavity optical device composed of fiber Bragg gratings. The sensitivity of the device for refractive index measurement is extracted from the change in its free-spectral range, rendering… Click to show full abstract
We model a multi-cavity optical device composed of fiber Bragg gratings. The sensitivity of the device for refractive index measurement is extracted from the change in its free-spectral range, rendering the sensor robust to small temperature fluctuations. Remote interrogation compatibility is ensured by the all-fiber design. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:423–428, 2017
               
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