Title :
Analysis of the spectral linewidth of distributed feedback laser diodes
Author :
Kojima, Keisuke ; Kyuma, Kazuo ; Nakayama, Takashi
Author_Institution :
Central Research Laboratory, Mitsubishi Electric Corporation, Hyogo, Japan
fDate :
10/1/1985 12:00:00 AM
Abstract :
The spectral linewidth of distributed feedback (DFB) laser diodes is theoretically studied. Numerical calculation shows that DFB lasers with long cavity lengths and large coupling coefficients have very narrow spectral linewidth less than 1 MHz, The effects of the phase shift and mirror facets on the spectral characteristics of DFB lasers are also analyzed, It is shown that the phase-shifter further narrows the spectral linewidth of DFB lasers. Its numerical result and physical meaning are also shown.
Keywords :
Semiconductor lasers; Diode lasers; Distributed feedback devices; Fiber lasers; Laser feedback; Laser modes; Laser theory; Mirrors; Optical fiber communication; Optical fiber sensors; Spectral analysis;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.1985.1074295
