Title :
The Research on the Characteristics Fiber Bragg Grating External Cavity Semiconductor Lasers
Author :
Changjian Qi ; Tonggang Zhao
Author_Institution :
Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
Fiber Bragg Grating-External Cavity Laser (FBG-ECL) is a kind of core component because of its dynamic single mode. In this paper, the theory model of FBG-ECL is analyzed firstly, Secondly, the influence of coupling coefficient on the threshold gain of FBG-ECL is studied based on equivalent external cavity theory, research shows: using proper peak reflectivity will make FBG-ECL having high output power and high side-mode suppression ratio, Thirdly, utilizing the theory of equivalent cavity length, the high frequency response characteristic of FBG-ECL is discussed combined rate equations, Lastly, lasing spectrums of FBG-ECL on different grating peak reflectivity are obtained by measurement. Those results are consistent with preceding theoretical analysis.
Keywords :
Bragg gratings; fibre lasers; laser cavity resonators; laser modes; optical fibre couplers; reflectivity; semiconductor optical amplifiers; FBG-ECL; coupling coefficient; dynamic single mode; equivalent cavity length; equivalent external cavity theory; fiber Bragg grating external cavity semiconductor lasers; grating peak reflectivity; high frequency response characteristic; high output power; rate equations; side-mode suppression ratio; threshold gain; Cavity resonators; Fiber gratings; Fiber lasers; Laser modes; Reflectivity; Semiconductor lasers; Equivalent Cavity Length; Fiber Grating; Photo Life; Reflection Coefficient;
Conference_Titel :
Instrumentation, Measurement, Computer, Communication and Control (IMCCC), 2013 Third International Conference on
Conference_Location :
Shenyang
DOI :
10.1109/IMCCC.2013.113
