Title :
Direct modulation of a multifrequency laser up to 16 x 622 Mb/s
Author :
Monnard, R. ; Doerr, C.R. ; Joyner, C.H. ; Zirngibl, M. ; Stulz, L.W.
Author_Institution :
Lucent Technol., AT&T Bell Labs., Holmdel, NJ, USA
fDate :
6/1/1997 12:00:00 AM
Abstract :
We demonstrate direct modulation results on a 16-channel chirped multifrequency laser without a shared amplifier, There is no optical power penalty compared to the case of a single modulated channel when all 16 channels are modulated simultaneously at 310 Mb/s, and 2 dB power penalty when they all are modulated at 622 Mb/s due to electrical crosstalk. The entire wavelength comb can be shifted by 275 GHz by changing the device temperature from 13/spl deg/C to 33/spl deg/C, while the channel-to-channel power uniformity remains better than 0.2 dB and the optical channel spacing stays exactly 200 GHz.
Keywords :
chirp modulation; crosstalk; laser stability; laser tuning; optical modulation; optical transmitters; semiconductor lasers; 13 C; 16-channel chirped multifrequency laser; 310 Mbit/s; 33 C; 622 Mbit/s; channel-to-channel power uniformity; device temperature; direct modulation; electrical crosstalk; multifrequency laser; multiwavelength transmitter; optical channel spacing; optical power penalty; semiconductor laser; simultaneous modulation; wavelength comb shift; Chirp modulation; Optical amplifiers; Optical crosstalk; Optical devices; Optical modulation; Power amplifiers; Power lasers; Semiconductor optical amplifiers; Stimulated emission; Temperature;
Journal_Title :
Photonics Technology Letters, IEEE
