Title :
Improved frequency control of DBR lasers under hopped conditions by prediction and compensation of heating
Author :
Finn, S.G. ; Hemenway, B.R. ; Gerbu, S.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., MIT, Cambridge, MA, USA
Abstract :
DBR lasers can exhibit significant frequency-errors when operated in which a random frequency-hopping schedule. We introduce a simple thermal model which anticipates the frequency errors a change in schedule induces. Experiments were performed which confirm the validity of the model. A compensation scheme is developed which reduces the worst case frequency error range from 32.1 to 7.9 GHz.
Keywords :
compensation; distributed Bragg reflector lasers; error analysis; frequency control; measurement errors; optical transmitters; semiconductor device models; semiconductor lasers; time division multiplexing; wavelength division multiplexing; 32.1 to 7.9 GHz; DBR lasers; compensation scheme; frequency errors; frequency-errors; heating compensation; hopped conditions; improved frequency control; random frequency-hopping schedule; simple thermal model; worst case frequency error range; Distributed Bragg reflectors; Frequency control; Heating; Laser modes; Optical fiber networks; Power lasers; Temperature sensors; Time division multiplexing; Waveguide lasers; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
