We propose and demonstrate broadband Brillouin slow light using a multiple-longitudinal-mode tunable fiber laser as Brillouin pump. A tunable broadband Brillouin pump with a tuning range from 1 520 to 1 555 nm is generated using a fiber ring laser with a semiconductor optical amplifier (SOA) as its gain medium. The pump spectrum consists of a large number of longitudinal modes separated by 6 MHz. The 3-dB bandwidth is about 11.5 GHz, and its fluctuation is less than 100 MHz within the tuning range. An 8-Gb/s data signal can be delayed by up to 83.0 ps (bit error rate < 10<sup>-9</sup>) at 17-dBm pump power.
© 2012 Chinese Optics Letters
Lasers and Laser Optics
Rugang Wang, Yuejiang Song, and Xuping Zhang, "Broadband Brillouin slow light with multiple-longitudinal-mode, tunable pump," Chin. Opt. Lett. 10, 081401- (2012)