Title :
Tunable dual-wavelength picosecond optical pulses generated from a self-injection seeded gain-switched laser diode
Author :
Shu, Chester ; Lee, Yip-Chi
Author_Institution :
Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Shatin, Hong Kong
fDate :
11/1/1996 12:00:00 AM
Abstract :
A novel scheme to generate dual-wavelength picosecond optical pulses has been demonstrated. The pulses are obtained by self-injection seeding of a gain-switched laser diode simultaneously at two different wavelengths. Optical feedback is provided by a partially reflecting fiber mirror. Single-mode pulses at alternate wavelengths around 1.3 μm have been generated. The pulse width varies from about 40 to 50 ps. The output wavelengths can be tuned by changing the electrical modulation frequency. Spacing between the wavelengths can also be controlled by adjusting the length of the dispersive fiber cavity. Our experimental data are in good agreement with the calculated results
Keywords :
electro-optical modulation; electro-optical switches; high-speed optical techniques; laser cavity resonators; laser feedback; laser mirrors; laser tuning; optical fibres; semiconductor lasers; 1.3 mum; 40 to 50 mus; dispersive fiber cavity; electrical modulation frequency; optical feedback; output wavelength tuning; partially reflecting fiber mirror; pulse width; self-injection seeded gain-switched laser diode; single-mode pulses; tunable dual-wavelength picosecond optical pulses; Diode lasers; Dispersion; Fiber lasers; Frequency; Laser mode locking; Optical feedback; Optical fiber polarization; Optical pulse generation; Optical pulses; Pulse modulation;
Journal_Title :
Quantum Electronics, IEEE Journal of
