title: Microdroplet-etched highly birefringent low-loss fiber tapers.
abstract: We use hydrofluoric acid microdroplets to directly etch highly birefringent biconical fiber tapers from standard single-mode fibers. The fiber tapers have micrometer-sized cross sections, which are controlled by the etching condition. The characteristic teardrop cross section leads to a high group birefringence of B(G)≈0.017 and insertion losses <0.7 dB over waist lengths of about 2.1 mm.
authors: Department of Electrical and Computer Engineering and Institute for Optical Sciences, University of Toronto, 10 King’s College Road, Toronto, Ontario M5S 3G4, Canada. jared.mikkelsen@utoronto.ca
authors: Jared C
authors: JC
authors: Mikkelsen
authors: Joyce K S
authors: JK
authors: Poon