Title :
A simple interferometric method for monitoring mode hopping in tunable external-cavity semiconductor lasers
Author :
Ohtsu, M. ; Liou, K.Y. ; Burrows, E.C. ; Burrus, C.A. ; Eisenstein, G.
Author_Institution :
AT&T Bell Lab., Holmdel, NJ, USA
Abstract :
The mode-hopping events in a 1.3- mu m grating-tuned external-cavity laser are analyzed on the basis of interferometric measurements. The average frequency of mode hopping for a 7.5-cm external-cavity laser is estimated and is expressed as f/sub c/=2.7*10/sup 6/*exp (-1.7/(I/I/sub th/-1)) (hertz) for 0.07>
Keywords :
laser cavity resonators; laser modes; laser tuning; laser variables measurement; light interferometry; semiconductor junction lasers; 1.3 micron; automatic control circuit; grating tuned laser; interferometric measurements; interferometric method; mode hopping; single-mode operation; tunable external-cavity semiconductor lasers; Distributed Bragg reflectors; Fiber lasers; Frequency estimation; Gratings; Laser modes; Laser theory; Laser tuning; Monitoring; Semiconductor lasers; Tunable circuits and devices;
Journal_Title :
Lightwave Technology, Journal of
