We experimentally demonstrate the simultaneous generation of tunable multi-wavelength picosecond laser pulses using a self-seeding configuration that consists of a gain-switched Fabry-Perot laser diode (FPLD) with an external cavity formed by a tilted multimode fiber Bragg grating. Dual- and triple-wavelength pulses are obtained and tuned in a flexible manner by changing the temperature of the FPLD. The side mode suppression ratio larger than 25 dB is achieved at different dual- and triple-wavelengths and the typical pulsewidth of the output pulses is ~70 ps. In the experiment, the wavelength separation can be narrowed to 0.57 nm.
© 2011 Chinese Optics Letters
(140.3520) Lasers and laser optics : Lasers, injection-locked
(140.3600) Lasers and laser optics : Lasers, tunable
(140.3538) Lasers and laser optics : Lasers, pulsed
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings
Tongjian Cai, Yunqi Liu, Xiaobei Zhang, and Tingyun Wang, "Generation of tunable multi-wavelength optical short pulses using self-seeded Fabry-Perot laser diode and tilted multimode fiber Bragg grating," Chin. Opt. Lett. 9, 041403- (2011)