Non-reflecting narrow-band fiber optical Fabry-Perot transmission filter

Abstract

Tilted Bragg gratings have been used for intermodal conversion in dual-mode fibers [1]. In this paper we demonstrate that such gratings in combined single-mode/dual mode structures are attractive for optical filter design. In particular, this concept is used here to realize narrowband Fabry-Perot transmission filters which - unlike ordinary FP-resonators - do not reflect the incident light at either side of the transmission peak.