Title :
Optical short pulse generation by a DFB laser/EA modulator integrated light source
Author :
Tanaka, Hideaki ; Suzuki, Masatoshi ; Matsushima, Yuichi
Author_Institution :
KDD R&D Labs., Saitama, Japan
fDate :
6/1/1993 12:00:00 AM
Abstract :
A simulation of optical short pulse generation using a DFB (distributed feedback) laser/EA (electroabsorption) modulator integrated light source was carried out. The dependence of the pulse shape and the spectrum on the isolation resistance between the laser and the modulator part is clarified. Theoretical results show that the spectrum is affected more seriously than the pulse shape by the isolation resistance. An isolation resistance of larger than 500 kΩ is required for transform-limited pulse generation. Utilizing an integrated light source with an isolation resistance of 10 MΩ, optical short pulse generation at a 5-GHz repetition rate was experimentally obtained with a pulsewidth of 33 ps and with a spectral bandwidth of 9.4 GHz
Keywords :
distributed feedback lasers; electro-optical devices; electroabsorption; integrated optoelectronics; optical communication equipment; optical modulation; optical solitons; 10 Mohm; 9.4 GHz; distributed feedback laser electroabsorption modulator integrated light source; isolation resistance; modulator part; optical short pulse generation; optical soliton transmission systems; pulse shape; pulsewidth; repetition rate; simulation; spectral bandwidth; spectrum; transform-limited pulse generation; Distributed feedback devices; Integrated optics; Laser feedback; Laser theory; Optical feedback; Optical modulation; Optical pulse generation; Optical pulse shaping; Pulse generation; Pulse modulation;
Journal_Title :
Quantum Electronics, IEEE Journal of
