Fabricating a Prototype Spectrometer Using a Large-Angle Direct UV-Written Chirped Tilted Grating
James W. Field, Matthew T. Posner, Sam A. Berry, Rex H. S. Bannerman, James C. Gates, and Peter G.R. Smith
Advanced Photonics 2018
A prototype planar waveguide spectrometer is fabricated with a 45° direct UV-written grating and a chirp of 140 nm. The grating focus translates by 1-2 µm/nm of input wavelength tuning, over a bandwidth of more than 200 nm.