Enhanced light detector

A method for implementing a detection mechanism that uses a photonics arrangement for sensing or detecting a scene light, comprising:

• a two dimensional array of Bragg Gratings, the Bragg Gratings gathering light from a lens image plane and funneling the light into a single mode waveguide,
• the single mode waveguide attached to a 50/50 splitter,
• one output of the 50/50 splitter has a Bragg Grating embedded into the single mode waveguide to partially reject wavelengths in the optical spectrum,
• another output contains light from the 50/50 splitter joined in as an evanescent coupler consisting of two arms,
• the light in the evanescent coupler arms being self-coherent but of different spectral content forming a spectrum-dependent beat pattern,
• the output of each arm of the evanescent coupler feeding light to a photo detector,
• each photo detector signal is fed to a frequency discriminator circuit with an output voltage proportional to a photo detector signal frequency,
• the output voltage signal of each photo detector is digitized and interfaced to a digital processor,
• the digital processor formatting image array signals for output to a display or computer.