A simple and robust system is presented to generate wavelength-tunable optical short pulses by use of two gain-switched Fabry-Perot laser diodes in a mutual pulse injection-seeding scheme. The operating wavelength of the optical pulses is flexibly selected by adjustment of a tunable filter, and its intensity is enhanced with an erbium-doped fiber amplifier. The side-mode suppression ratio achieved by the system is larger than 26 dB over a wavelength region of 25 nm and higher than 31 dB within an 18-nm wavelength.
© 2003 Optical Society of America
(140.2020) Lasers and laser optics : Diode lasers
(140.3520) Lasers and laser optics : Lasers, injection-locked
(320.5390) Ultrafast optics : Picosecond phenomena
(320.7090) Ultrafast optics : Ultrafast lasers
Xiaohui Fang and D. N. Wang, "Wavelength-Tunable Optical Short-Pulse Generation by Mutual Pulse Injection Seeding of Two Gain-Switched Fabry–Perot Laser Diodes," Appl. Opt. 42, 5522-5525 (2003)