Title :
Observation of the shift of frequency chirp in two section distributed feedback semiconductor lasers
Author :
Feng, J. ; Chen, T.R. ; Yariv, A.
Author_Institution :
Thomas J. Watson Lab. of Appl. Phys., California Inst. of Technol., Pasadena, CA, USA
fDate :
30 Oct-2 Nov 1995
Abstract :
We report here on the control of frequency chirp of a two section InGaAsP-InP DFB laser by nonuniform current injection and the achievement of blue-shift optical signals from the two section DFB laser under direct current modulation. Through a measurement of the time-averaged power spectrum of the laser at 5-GHz modulation with fixed optical modulation index, the changing frequency chirp is demonstrated for various distributions of longitudinal photon density
Keywords :
III-V semiconductors; chirp modulation; distributed feedback lasers; gallium arsenide; gallium compounds; indium compounds; optical modulation; refractive index; semiconductor lasers; spectral line shift; 5 GHz; GHz modulation; InGaAsP-InP; blue-shift optical signals; changing frequency chirp; direct current modulation; fixed optical modulation index; frequency chirp control; frequency chirp shift observation; longitudinal photon density; nonuniform current injection; time-averaged power spectrum; two section DFB laser; two section InGaAsP-InP DFB laser; two section distributed feedback semiconductor lasers; Chirp modulation; Distributed feedback devices; Frequency modulation; High speed optical techniques; Laser feedback; Laser theory; Optical modulation; Optical pumping; Power lasers; Semiconductor lasers;
Conference_Titel :
Lasers and Electro-Optics Society Annual Meeting, 1995. 8th Annual Meeting Conference Proceedings, Volume 1., IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-2450-1
DOI :
10.1109/LEOS.1995.484652
