Title :
Pulsed multichannel source generation for RZ based WDM application
Author :
Bao, H.C. ; Wen, Y.J. ; Liu, H.F.
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Melbourne, Parkville, Vic., Australia
Abstract :
This letter demonstrates a novel technique for the generation of a pulsed multichannel source from a multiple mode laser diode (LD). The pulsed multiple channel source with 6.5 GHz repetition rate was generated from a subharmonically hybrid mode-locked monolithic laser with 32.5 GHz mode spacing. The obtained pulse source exhibits high extinction ratio (>10 dB) and low level of root-mean-square (RMS) phase noise (<0.11 rad) over all channels from 1556 to 1565 nm. The proposed scheme is cost-effective and a promising candidate for 10-GHz pulse source generation in 10-Gb/s based wavelength-division-multiplexed (WDM) systems with 50-GHz channel spacing using return-to-zero (RZ) data format.
Keywords :
amplitude modulation; laser mode locking; laser noise; optical pulse generation; optical transmitters; phase noise; semiconductor lasers; wavelength division multiplexing; 10 GHz; 10 Gbit/s; 10-GHz pulse source generation; 1556 to 1565 nm; RZ based WDM application; high extinction ratio; low RMS phase noise; mode spacing; multiple mode laser diode; pulsed multichannel source generation; repetition rate; return-to-zero data format; subharmonically hybrid modelocked monolithic laser; wavelength-division-multiplexed systems; Channel spacing; Diode lasers; Extinction ratio; Hybrid power systems; Laser mode locking; Laser noise; Optical pulse generation; Phase noise; Pulse generation; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.818217
