title: Measurement of co- and cross-polarized Raman spectra in silica fiber for small detunings.
abstract: We report measurement of co- and cross-polarized Raman gain spectra at the zero-dispersion wavelength of standard dispersion-shifted fiber for detunings down to 0.17 THz (5.7cm-1) on both Stokes and anti-Stokes sides by using a photon-counting technique. This technique separates the Raman scattering from the four-photon scattering. In addition, the use of a pulsed pump eliminates Brillouin scattering and the use of a Sagnac loop rejects the pump photons that spectrally spread into the detection band due to self-phase-modulation.
authors.forename: Xiaoying
authors.initials: X
authors.lastname: Li
authors.forename: Paul
authors.initials: P
authors.lastname: Voss
authors.forename: Jun
authors.initials: J
authors.lastname: Chen
authors.forename: Kim
authors.initials: K
authors.lastname: Lee
authors.forename: Prem
authors.initials: P
authors.lastname: Kumar