Title :
40-GHz dual-mode-locked widely tunable sampled-grating DBR laser
Author :
Johansson, L.A. ; Hu, Zhaoyang ; Blumenthal, D.J. ; Coldren, L.A. ; Akulova, Y.A. ; Fish, G.A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of California, Santa Barbara, CA, USA
Abstract :
Generation of 40-GHz alternate-phase pulses is demonstrated using a dual-mode-locked sampled-grating distributed Bragg reflector laser. More than 10-dB extinction and >20-dB sidemode suppression ratio is measured over the >40-nm tuning range of the laser. Based on captured phase noise spectra, the timing jitter is estimated in the 0.35-0.41-ps range. The demonstrated dual-mode laser would form an attractive basis for an integrated 40-Gb/s return-to-zero transmitter.
Keywords :
diffraction gratings; distributed Bragg reflector lasers; integrated optoelectronics; laser mode locking; laser noise; laser tuning; optical pulse generation; optical transmitters; phase noise; timing jitter; 0.35 to 0.41 ps; 40 GHz; 40 Gbit/s; DBR laser; alternate-phase pulses; distributed Bragg reflector laser; dual-mode laser; dual-mode-locked laser; integrated return-to-zero transmitter; phase noise spectra; sampled-grating laser; sidemode suppression ratio; timing jitter; widely tunable laser; Distributed Bragg reflectors; Extinction coefficients; Laser noise; Laser tuning; Optical pulse generation; Phase estimation; Phase noise; Timing jitter; Transmitters; Tunable circuits and devices; Dual-mode lasers; integrated optoelectronics; optical communications; optical pulse generation; sampled-grating distributed Bragg reflector (SG-DBR) lasers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.840819
