title: Surface corrugation Bragg gratings on optical fiber tapers created via plasma etch postprocessing.
abstract: We describe a reflection-based fiber filter fabricated by plasma etching a surface corrugation Bragg grating on a tapered single-mode fiber. The taper waist with the grating forms the functional part of the filter, and the adiabatic taper transition removes unwanted higher-order modes. The spectral response is controlled by varying the taper diameter while maintaining a constant grating period. Reflection spectra have been investigated theoretically and experimentally and found to be in good agreement.
authors.affiliation: Department of Physics, University of Bath, Bath BA2 7AY, UK. pypwd@bath.ac.uk
authors.forename: W
authors.initials: W
authors.lastname: Ding
authors.forename: S R
authors.initials: SR
authors.lastname: Andrews
authors.forename: S A
authors.initials: SA
authors.lastname: Maier