title: Nonlinear polarization rotation in a dispersion-flattened photonic-crystal fiber for ultrawideband (>100 nm) all-optical wavelength conversion of 10 Gbit/s nonreturn-to-zero signals.
abstract: We study the conversion bandwidth of the cross-polarization-modulation (XPoIM)-based wavelength conversion scheme with a dispersion-flattened highly nonlinear photonic-crystal fiber for signals with a nonreturn-to-zero (NRZ) modulation format. Both theoretical and experimental results show that the conversion bandwidth can be extended to cover a very wide band, including S-, C-, and L-bands for 10 Gbit/s NRZ signals (a total bandwidth of 120 nm is experimentally demonstrated). We also study the theoretical bandwidth limit for 40 Gbit/s NRZ signals. A significant extension of the conversion bandwidth using the XPoIM approach compared with the four-wave mixing approach previously reported is demonstrated.
authors.affiliation: Department of Electronic Engineering, Centre for Advanced Research in Photonics, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong. chkwok@ee.cuhk.edu.hk
authors.forename: C H
authors.initials: CH
authors.lastname: Kwok
authors.forename: C W
authors.initials: CW
authors.lastname: Chow
authors.forename: H K
authors.initials: HK
authors.lastname: Tsang
authors.forename: Chinlon
authors.initials: C
authors.lastname: Lin
authors.forename: A
authors.initials: A
authors.lastname: Bjarklev