TITLE:
Numerical Analysis of the Effect of Temperature and External Optical Feedback Variation on the Output Characteristics of External Cavity Semiconductor Laser Based Fiber Bragg Gratings
AUTHORS:
Hisham K. Hisham
KEYWORDS:
External Cavity Semiconductor Lasers, External Optical Feedback, Fiber Bragg Gratings
JOURNAL NAME:
Open Access Library Journal,
Vol.2 No.12,
December
8,
2015
ABSTRACT:
The temperature and external optical feedback (OFB) effects on power
characteristics of external cavity semiconductor laser model based fiber Bragg
gratings (FBGs) are numerically analyzed. In this model, fiber Bragg grating
(FBG) is used as a wavelength selective element to control the properties of
the laser output by controlling the external OFB level. The study is performed
by modifying output laser equations that are solved by considering the effects
of ambient temperature (T) variations and external OFB. In this study,
the temperature dependence (TD) of laser characteristics is calculated
according to TD of laser parameters instead of using the well-known Pankove
relationship. Results show that by increasing the external OFB level, the laser
output power improves significantly. Also, results show that by changing the
operating temperature 15℃ (from 15℃ to 30℃), there is no great impact on the
output characteristics. The obtained results can provide an important idea for
the practical fabrication for this type of lasers.