Abstract

We have demonstrated simultaneous generation of stable picosecond laser pulses at five close wavelengths at a pulse repetition rate of ∼2 GHz by using a self-seeding configuration that consisted of a gain-switched Fabry–Perot laser diode (FPLD) with an external cavity formed by a tunable spectrum-split fiber Bragg grating (FBG). The FBG selected only one of the modes of the FPLD and, at the same time, filtered the selected FPLD mode such that the reflection from the FBG, tapped with a directional coupler, provided an output of dual-wavelength pulses and the transmission through the FBG provided an output of three-wavelength pulses. We could change the intensities and the wavelength separations of the pulses by adjusting the modulating radio frequency and the temperature of the FPLD and the separation of the FBG reflection peaks. In our experiments the highest side-mode suppression ratios of the pulses obtained were 44.5 dB for the dual-wavelength output and 25.0 dB for the three-wavelength output. Also, the laser was demonstrated to minimize pulse intensity imbalance and produce equally separated wavelengths (with a wavelength separation of 0.2 nm). This simple laser offers considerable flexibility for various applications.

© 2005 Optical Society of America

Wavelength switching of picosecond pulses generated from a self-seeded Fabry–Perot laser diode with a tilted fiber Bragg grating formed in a graded-index multimode fiber

Yunqi Liu and Kin Seng Chiang
Appl. Opt. 50(6) 829-834 (2011)

Generation of continuously wavelength-tunable optical short pulses by use of two self-seeded Fabry–Perot laser diodes and an optical switch

Xiaohui Fang, Dong-Ning Wang, Wei Jin, Weng-Hong Chung, Hoi-Lut Ho, Yeuk-Lai Hoo, Jian Ju, and Zhi Wang
Appl. Opt. 44(30) 6444-6448 (2005)

Fiber-Bragg-grating force sensor based on a wavelength-switching actively mode-locked erbium-doped fiber laser

Yunqi Liu, Kin Seng Chiang, and Pak Lim Chu
Appl. Opt. 44(23) 4822-4829 (2005)

Linewidth reduction and wavelength tuning of an erbium-doped fiber laser by use of a single-mode-selected and side-mode-suppressed Fabry-Perot laser diode

Gong-Ru Lin and Jung-Rung Wu
Appl. Opt. 42(27) 5477-5482 (2003)

Mutual injection locki ng of an erbium-doped fiber laser and a fiber-pigtailed Fabry- Perot laser diode

Gong-Ru Lin
Opt. Lett. 28(14) 1203-1205 (2003)