Title :
Multichannel SBS Slow Light Using Spectrally Sliced Incoherent Pumping
Author :
Zhang, Bo ; Yan, Lianshan ; Zhang, Lin ; Willner, Alan E.
Author_Institution :
Dept. of Electr. Eng.-Syst., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
We propose and experimentally demonstrate the use of an incoherent spectrally sliced amplified spontaneous emission (ASE) source as the pump for broadband stimulated Brillouin scattering-based slow light. Both 2.5-Gb/s on-off-keyed and differential-phase-shift-keyed signals are continuously delayed by as much as 170 ps, with less than 4-dB power penalty at 10-9 bit error rate. A 2-GHz and a 4-GHz spectrally sliced pump are compared, emphasizing the need of optimizing the slow-light spectral-width according to the signal bandwidth. Furthermore, independent and simultaneous delay on multiple data channels with different modulation formats within a single slow-light medium is proposed and experimentally demonstrated by using a periodically spectrally sliced ASE source. Our approach might be useful in future heterogeneous multiformat, multibit-rate, and multichannel fiber-optic communication systems and networks.
Keywords :
amplitude shift keying; differential phase shift keying; optical fibre networks; optical pumping; slow light; stimulated Brillouin scattering; superradiance; ASE; amplified spontaneous emission; bit rate 2.5 Gbit/s; broadband stimulated Brillouin scattering; differential-phase-shift-keying; fibre optic networks; frequency 2 GHz to 4 GHz; heterogeneous multiformat communication; multibit-rate communication; multichannel SBS slow light; multichannel fiber-optic communication system; multiple data channels; on-off-keyed signal; spectrally sliced incoherent pumping; time 170 ps; Brillouin scattering; Fiber nonlinear optics; Nonlinear optics; Optical buffering; Optical pumping; Optical refraction; Optical scattering; Optical signal processing; Optical variables control; Slow light; Differential-phase-shift-keyed (DPSK); multichannel operation; nonlinear fiber optics; optical signal processing; pattern dependence; slow light; stimulated Brillouin scattering (SBS); tunable delay line; variable bit rate;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2008.2005273