United States of America As Represented by the Secretary of the Air Force

John H Goldsmith

John S Derov

Mohammad I Vakil

Jarrett H Vella

In accordance with various embodiments of the disclosed subject matter, a system, device and method for an electrically tunable wavelength selection filter comprising a wavelength selection filter portion having a plurality of alternating thin films of two dielectric materials with a thin film capacitor displacing one pair of alternating thin films, and an order sorting filter portion electrically isolated from but proximate the wavelength selection filter and having a plurality of alternating thin films of two dielectric materials where one of the dielectric materials exhibits a voltage-dependent refractive index. Independently controlling the capacitor charging voltage and the voltage across the order sorting filter enables selective transmission of narrow spectral lines across a desired frequency region.

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Dayton, OH, United States of America

John H Goldsmith