Patent ID: 9329089
Filing Date: 2016-05-03
CPC Classification: G01D,G01J,G01K,G01L,G02B

Claim Text:
1. An optical device comprising: a fiber Bragg grating comprising a substantially periodic refractive index modulation along a length of the fiber Bragg grating, the refractive index modulation having an index contrast greater than at least one optical detector in optical communication with the fiber Bragg grating; and a narrowband optical source of light having a wavelength at or in the vicinity of a local transmission maximum or at or in the vicinity of a wavelength at which the power transmission spectrum has a maximum slope between a local transmission maximum and either one of two local transmission minima neighboring the local transmission maximum, the narrowband optical source in optical communication with a first optical path extending along and through the length of the fiber Bragg grating to the at least one optical detector, the narrowband optical source in optical communication with a second optical path not extending along and through the fiber Bragg grating.