Publication
An all-fiber tunable filter device that uses a resistive fiber coating to directly heat an intra-core Bragg grating is presented. Bragg gratings were fabricated in a hydrogen-loaded standard telecommunication fiber by a KrF excimer laser with a fluence of 50 mJ/cm2 per pulse. Electrical connections were realized with gold wires at the ends of the coated section and a total resistance of 38 Ω was measured. A large wavelength tuning range of 2.15 nm was obtained by application of a low electrical power of 0.54 W.
Tobias Kippenberg, Rui Ning Wang, Xinru Ji, Zheru Qiu, Andrea Bancora, Yang Liu, Andrey Voloshin
François Maréchal, Luc Girardin, Ana Catarina Gouveia Braz, Bingqian Liu, Raphaël Briguet