Title :
Fast wavelength-tunable multichannel switching using a self-injection seeding scheme
Author :
Yam, Sui-Pan ; Shu, Chester
Author_Institution :
Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Shatin, Hong Kong
fDate :
2/1/1999 12:00:00 AM
Abstract :
Wavelength-tunable switching among different channels in the range of hundreds of megahertz has been demonstrated by the self-injection seeding mechanism. The different wavelength components have been switched by sequentially feeding back the temporally separated cavity modes to the laser diode. The spacing between different wavelengths has been tuned by adjusting the electrical modulation frequency and the length of the dispersive fiber cavity. In addition to the spectral and temporal profiles, the switching characteristics such as the output pulsewidth, side-mode-suppression ratio, tuning rate, and the effect of the fiber length have also been investigated
Keywords :
electro-optical modulation; laser cavity resonators; laser feedback; laser modes; laser tuning; optical transmitters; semiconductor lasers; wavelength division multiplexing; WDM; dispersive fiber cavity; electrical modulation frequency; fast wavelength-tunable multichannel switching; fiber length; laser diode; output pulsewidth; pulsed laser diode switching; self-injection seeding scheme; sequential feedback; side-mode-suppression ratio; spectral profiles; switching characteristics; temporal profiles; temporally separated cavity modes; tune; tuning rate; wavelength components; Communication switching; Diode lasers; Fiber nonlinear optics; Frequency modulation; Laser tuning; Nonlinear optics; Optical bistability; Optical feedback; Optical fiber polarization; Optical sensors;
Journal_Title :
Quantum Electronics, IEEE Journal of
