title: Third order cascaded Raman wavelength shifting in chalcogenide fibers and determination of Raman gain coefficient.
abstract: Cascaded Raman wavelength shifting up to three orders from 1553 nm to 1867 nm is demonstrated in As(2)S(3)-chalcogenide fibers. Due to a long zero dispersion wavelength for the sulfide fiber (>4.5 mum), pumping the fiber at 1553 nm results in generation of cascaded Stokes orders based on stimulated Raman scattering. Using the threshold power for the Raman orders, we estimate the Raman gain coefficient for the As(2)S(3) fibers to be ~5.7x10(-12) m/W at 1550 nm. Observation of higher Raman orders is limited by damage to the fiber at input intensities >1 GW/cm(2).
authors.forename: Ojas P
authors.initials: OP
authors.lastname: Kulkarni
authors.forename: Chenan
authors.initials: C
authors.lastname: Xia
authors.forename: Dong Joon
authors.initials: DJ
authors.lastname: Lee
authors.forename: Malay
authors.initials: M
authors.lastname: Kumar
authors.forename: Amos
authors.initials: A
authors.lastname: Kuditcher
authors.forename: Mohammed N
authors.initials: MN
authors.lastname: Islam
authors.forename: Fred L
authors.initials: FL
authors.lastname: Terry
authors.forename: Mike J
authors.initials: MJ
authors.lastname: Freeman
authors.forename: Bruce G
authors.initials: BG
authors.lastname: Aitken
authors.forename: Stephen C
authors.initials: SC
authors.lastname: Currie
authors.forename: Joseph E
authors.initials: JE
authors.lastname: McCarthy
authors.forename: Mark L
authors.initials: ML
authors.lastname: Powley
authors.forename: Dan A
authors.initials: DA
authors.lastname: Nolan