Title :
Multichannel stabilization of an integrated WDM laser transmitter through correlation feedback
Author :
Giles, C.R. ; Zirngibl, M.
Author_Institution :
Lucent Technol., AT&T Bell Labs., Holmdel, NJ, USA
Abstract :
The output optical signal power in each channel of an integrated multifrequency laser can be estimated by correlating the total laser output signal with channel data using an optical receiver and an RF mixer. This correlation signal was used in a feedback loop to equalize and stabilize an eight-channel 50-Mb/s 1550-nm wavelength-division multiplexed (WDM) multifrequency laser. The method also works with broadcast data by introducing relative time delays between the channels to decorrelate their data.
Keywords :
delays; laser feedback; laser stability; laser transitions; optical correlation; optical receivers; optical transmitters; semiconductor lasers; wavelength division multiplexing; 1550 nm; 50 Mbit/s; RF mixer; WDM multifrequency laser optical equalisation; broadcast data; channel data; correlation feedback; correlation signal; decorrelate; feedback loop; integrated WDM laser transmitter; integrated multifrequency laser; multichannel stabilization; optical correlation; optical receiver; output optical signal power; relative time delays; total laser output signal; wavelength-division multiplexed; Integrated optics; Laser feedback; Laser stability; Optical feedback; Optical receivers; Optical transmitters; Power lasers; RF signals; Radio frequency; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
