Title :
Method for setting the absolute frequency of a tunable, 1.5 mu m two-section DBR laser
Author :
Giles, C.R. ; Koch, T.L.
Author_Institution :
AT&T Bell Lab., Holmdel, NJ, USA
Abstract :
A technique for setting the absolute frequency of a 1.5- mu m two-section distributed Bragg reflector (DBR) laser using an Er:YAG optical filter as a frequency discriminator is described. The absolute frequency of the laser was controlled with an accuracy better than 300 MHz over a tuning range of several hundred gigahertz. The frequency drift with laser temperature was -130 MHz/ degrees C, and the tuning rate with current in the active region was 40 MHz/mA.<>
Keywords :
III-V semiconductors; distributed Bragg reflector lasers; gallium arsenide; gallium compounds; indium compounds; laser frequency stability; laser tuning; semiconductor junction lasers; 1.5 micron; Er:YAG optical filter; InGaAsP; YAG:Er; YAl5O12:Er; absolute frequency setting; active region; frequency discriminator; frequency drift; semiconductor laser; tunable laser; tuning range; tuning rate; two-section DBR laser; Distributed Bragg reflectors; Frequency shift keying; Laser beams; Laser feedback; Laser modes; Laser transitions; Laser tuning; Optical filters; Optical tuning; Tunable circuits and devices;
Journal_Title :
Photonics Technology Letters, IEEE
