INDUCED TRANSMISSION FILTER

A method comprising: filtering, by an optical filter, a first portion of an input optical signal with a first spectral range, wherein the first portion of the input optical signal is not passed through the optical filter and an optical filter structure; and passing, by the optical filter and an optical filter structure, a second portion of the input optical signal, with a second spectral range, through the optical filter and the optical filter structure and toward an optical sensor of a sensor system. The second portion of the input optical signal is used to provide an output electrical signal for the sensor system. The optical filter is a mixed dielectric/metal filter providing at least one of an angle shift of less than approximately 30 nm at angles of incidence from 0 degrees to 50 degrees, an angle shift of less than approximately 20 nm at angles of incidence from 0 degrees to 40 degrees, or an angle shift of less than approximately 10 nm at angles of incidence from 0 degrees to 20 degrees.