title: Mode-selective wavelength conversion of OFDM-QPSK signals in a multimode silicon waveguide.
abstract: We experimentally demonstrate on-chip mode-selective wavelength conversions based on the degenerate four-wave mixing (FWM) nonlinear effect in a few-mode silicon waveguide. A multimode waveguide with tapered directional coupler based mode (de)multiplexers is designed and fabricated. Using signals with advanced modulation formats all-optical wavelength conversions of 102.6-Gb/s OFDM-QPSK signals are verified. Experimental results show that only small optical signal-to-noise ratio (OSNR) penalties are observed after wavelength conversion of both modes, which are less than 2 dB for OFDM-QPSK at 7% forward error correction (FEC) threshold.
authors.forename: Ying
authors.initials: Y
authors.lastname: Qiu
authors.forename: Xiang
authors.initials: X
authors.lastname: Li
authors.forename: Ming
authors.initials: M
authors.lastname: Luo
authors.forename: Daigao
authors.initials: D
authors.lastname: Chen
authors.forename: Jiamin
authors.initials: J
authors.lastname: Wang
authors.forename: Jing
authors.initials: J
authors.lastname: Xu
authors.forename: Qi
authors.initials: Q
authors.lastname: Yang
authors.forename: Shaohua
authors.initials: S
authors.lastname: Yu