title: All-fiber acousto-optic tunable notch filter with electronically controllable spectral profile.
abstract: We demonstrate a novel all-fiber acousto-optic tunable notch filter based on coupling to cladding modes in a single-mode fiber. The device has the advantage of low loss (<0.1 dB) and low polarization dependence. By coupling input light to multiple cladding modes by use of multiple acoustic waves, we achieved an electronically controllable variable spectral profile without a significant coherent cross-talk problem.
authors.forename: H S
authors.initials: HS
authors.lastname: Kim
authors.forename: S H
authors.initials: SH
authors.lastname: Yun
authors.forename: I K
authors.initials: IK
authors.lastname: Kwang
authors.forename: B Y
authors.initials: BY
authors.lastname: Kim