Title :
Design and performance evaluation of narrowband rectangula optical filter based on stimulated Brillouin scattering in fiber
Author :
Lilin Yi ; Wei Wei ; Weisheng Hu
Author_Institution :
State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
We propose a rectangular optical filter based on stimulated Brillouin scattering in fiber with tunable bandwidth from 50 MHz to 4 GHz at 15-MHz tuning resolution. The steep-edged rectangular shape of the filter is precisely controlled utilizing digital feedback revision of the pump light. The passband ripple is ~1 dB by nonlinearity management of the pump and using the fiber with a single Brillouin peak. The extinction ratio of the filter is further enhanced using the polarization characteristics of the Brillouin scattering. Based on this filter, we demonstrate a sub-band extraction of a multi-band orthogonal frequency division multiplexing signal, which shows the potential ability of the filter in the fields of optical and microwave signal processing.
Keywords :
OFDM modulation; optical design techniques; optical fibre filters; optical fibre polarisation; optical information processing; optical pumping; optical tuning; stimulated Brillouin scattering; bandwidth 50 MHz to 4 GHz; digital feedback revision; extinction ratio; microwave signal processing; multiband orthogonal frequency division multiplexing signal extraction; narrowband rectangular optical filter design; optical fiber; optical signal processing; passband ripple; performance evaluation; polarization characteristics; pump light; steep-edged rectangular shape; stimulated Brillouin scattering; tunable bandwidth; Bandwidth; Gain; Microwave filters; Optical fiber amplifiers; Optical fiber filters; Scattering; Rectangular optical filter; stimulated Brillouin scattering;
Conference_Titel :
Optical Communications and Networks (ICOCN), 2014 13th International Conference on
Conference_Location :
Suzhou
DOI :
10.1109/ICOCN.2014.6987074
