Fluid analysis system based on integrated computing element technology and fiber bragg grating radiometry

A system, comprising:

• a probe light source that generates and emits a probe light;
• a detector;
• an optical link to transmit the probe light;
• and
• an optical computing device, comprising:
• an integrated computational element (ICE);
• a sample cell that optically interacts the ICE with a sample to generate computation light associated with a characteristic of the sample;
• and
• a fiber sensor that converts the computation light into heat, the fiber sensor being communicably coupled to the detector through the optical link and configured to return a portion of the probe light through the optical link to the detector according to the heat converted.

A method, comprising:

• providing probe light to an optical waveguide communicably coupled to an optical link;
• optically interacting illumination light with an integrated computational element and a sample to generate computation light associated with a characteristic of a sample;
• converting the computation light to heat generated by a coating disposed in a fiber sensor located along the optical link;
• reflecting, in the fiber sensor, a portion of the probe light according to the heat generated by the coating;
• and
• determining a value for the characteristic of the sample based on the reflected portion of the probe light.