Title :
Thermal compensation for frequency-hopped DBR lasers
Author :
Finn, Steven G. ; Hemenway, B. Roe
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., MIT, Cambridge, MA, USA
Abstract :
Fast, discretely tunable distributed Bragg reflector (DBR) lasers are used in all-optical wavelength-division muitiplexing (WDM) networks for time-sharing wavelengths among many users. This is accomplished by hopping between frequencies in a time-division multiplexing (TDM) pattern. It has been observed that the frequency alignment of the DBR laser is sensitive to the TDM hopping pattern, which can lead to significant system frequency errors. In this work, we show that using thermal compensation can substantially reduce these frequency errors
Keywords :
compensation; distributed Bragg reflector lasers; optical fibre networks; optical transmitters; semiconductor lasers; time division multiplexing; wavelength division multiplexing; TDM; TDM hopping pattern; all-optical WDM networks; fast discretely tunable DBR lasers; frequency alignment; frequency-hopped DBR laser thermal compensation; system frequency errors; time-sharing wavelengths; Distributed Bragg reflectors; Frequency; Gratings; Laser modes; Optical coupling; Power lasers; Temperature dependence; Temperature sensors; Waveguide lasers; Wavelength division multiplexing;
Conference_Titel :
Optical Fiber Communication. OFC 97., Conference on
Conference_Location :
Dallas, TX
Print_ISBN :
1-55752-480-7
DOI :
10.1109/OFC.1997.719853
