title: Chiral fiber gratings.
abstract: Chiral gratings with double helix symmetry were produced by twisting glass optical fiber with a noncircular core cross section as it passed through a miniature oven. We observed polarization-selective transmission in chiral fibers with pitches of tens of micrometers. Two modes of optical interaction were differentiated. In chirallong-period gratings, dips in transmission were observed at wavelengths associated with scattering into distinct cladding modes mediated by the chiral grating. In chiral intermediateperiod gratings, a broad scattering band was observed. These gratings can be used to produce sharp or broad polarization-selective filters.
authors.affiliation: Chiral Photonics, Inc., Clifton, NJ 07012, USA. vickopp@chiralphotonics.com
authors.forename: Victor I
authors.initials: VI
authors.lastname: Kopp
authors.forename: Victor M
authors.initials: VM
authors.lastname: Churikov
authors.forename: Jonathan
authors.initials: J
authors.lastname: Singer
authors.forename: Norman
authors.initials: N
authors.lastname: Chao
authors.forename: Daniel
authors.initials: D
authors.lastname: Neugroschl
authors.forename: Azriel Z
authors.initials: AZ
authors.lastname: Genack