Use of 1-mBi_2O_3 nonlinear fiber for 160-Gbit?s optical time-division demultiplexing based on polarization rotation and a wavelength shift induced by cross-phase modulation

Abstract

We present, for the first time to our knowledge, experimental results of the use of a $1\text{-}\mathrm{m}$-long ${\mathrm{Bi}}_2{\mathrm{O}}_3$-based nonlinear fiber (Bi-NLF) with a nonlinear parameter γ of $\sim 1100{\mathrm{W}}^{-1}{\mathrm{km}}^{-1}$ within an all-fiber-based $160\text{-}\mathrm{Gbit}∕\mathrm{s}$ optical time-division multiplexing (OTDM) data demultiplexer. Our demultiplexing switch basically uses the principle of the Kerr shutter, and its switching performance is further enhanced by the additional use of the wavelength blueshift of data pulses, which is induced by cross-phase modulation from the control pulse’s trailing edge. The OTDM demultiplexer, composed of the $1\text{-}\mathrm{m}$ Bi-NLF, readily achieves error-free demultiplexing operation of all 16 channels.