학술논문
Wavelength, modal and power stabilization of tunable electro-absorption modulated, distributed Bragg reflector lasers
Document Type
Conference
Author
Source
Conference Digest. 2000 IEEE 17th International Semiconductor Laser Conference. (Cat. No.00CH37092) Semiconductor laser conference Semiconductor Laser Conference, 2000. Conference Digest. 2000 IEEE 17th International. :49-50 2000
Subject
Language
Abstract
Optical sources for dense wavelength division multiplexed (DWDM) systems must produce constant wavelength and power output over a system lifetime despite aging-induced changes that affect both wavelength and power. Tunable sources, such as distributed Bragg reflector (DBR) lasers, require additional modal stabilization to prevent aging-induced failure due to mode hopping. We demonstrate a practical scheme for simultaneously stabilizing the wavelength, mode and power of a tunable DBR laser which was then observed to operate stabilized and error-free within a transmitter at 2.5Gb/s over 680km ofnon-dispersion shifted fiber. Feedback is proven robust against sudden and large perturbations. A five-section electro-absorption modulated (EA) DBR laser serves as an electrically tunable source coupled to three closed feedback loops, which independently provide robust modal, wavelength and power stabilization.