Related Experiment Video
Updated: Aug 6, 2026
Fabrication of a Low-Cost, Fiber-Coupled, and Air-Spaced Fabry-Pérot Etalon
Published on: February 3, 2023
Tunable narrowband filter based on a combination of Fabry-Perot etalon and volume Bragg grating
J Lumeau1, L B Glebov, V Smirnov
1CREOL, College of Optics and Photonics, University of Central Florida, Orlando, FL 32816-2700, USA. jlumeau@creol.ucf.edu
Abstract:
A new type of tunable narrowband filter is proposed. This filter is a combination of a Fabry-Perot etalon, which permits the selection of a comb of discrete narrow bands, and a high-efficiency rotating volume Bragg grating recorded in photo-thermo-refractive glass, which permits tuning between the Fabry-Perot resonances. A tunable filter for fixed wavelengths in the region of 1.5 mum with a spectral width of 220 pm (FWHM), separation between channels of 800 pm, and throughput of 95% (losses <0.2 dB) is demonstrated.
