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.

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