Micro-resonator based optical sensor

摘要

An optical sensor system for providing an output signal in response to a sensed parameter comprising: an optical signal source for generating an input optical signal; a sensing element in optical communication with the optical signal source, the sensing element comprising at least two resonant cavity loops exhibiting a common resonant frequency near at least one frequency of the input optical signal, at least one of the resonant cavity loops being exposed to an external parameter, the external parameter modifying the resonant frequency of the at least one exposed resonant cavity loop thereby modifying an optical output signal; and a detector in optical communication with the sensing element, the detector detecting any modification in the output optical signal in response to the sensed parameter.