Title :
Tunable dual-wavelength picosecond pulse generation using multiple-optical-path self-seeding approach
Author :
Wang, D.N. ; Shu, C.
Author_Institution :
Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Shatin, Hong Kong
Abstract :
A simple system is developed to generate tunable dual-wavelength optical pulses by self-injection seeding of a laser diode. The wavelengths are selected by controlling two light paths incident on a single diffraction grating. The spectral separation has been tuned from 1.8 to 16.1 nm while maintaining an output side-mode-suppression-ratio (SMSR) over 21 dB. This multiple-optical-path self-seeding approach is simple and efficient, thus providing an attractive alternative to generate tunable multiwavelength pulses.
Keywords :
diffraction gratings; high-speed optical techniques; laser feedback; laser modes; laser transitions; laser tuning; semiconductor lasers; external cavity; gain switched LD; laser diode; light path control; multiple-optical-path self-seeding; optical pulses; output side-mode-suppression-ratio; single diffraction grating; spectral separation tuning; tunable dual-wavelength picosecond pulse generation; tunable multiwavelength pulses; Diode lasers; Erbium-doped fiber lasers; Gratings; Laser feedback; Laser mode locking; Optical feedback; Optical pulse generation; Optical pulses; Pulse generation; Tunable circuits and devices;
Journal_Title :
Photonics Technology Letters, IEEE
