Title :
Chirp characteristics of 10-Gb/s electroabsorption modulator integrated DFB lasers
Author :
Kim, Yonggyoo ; Lee, Hanlim ; Lee, Jaehoon ; Han, Jaeho ; Oh, T.W. ; Jeong, Jichai
Author_Institution :
Dept. of Radio Eng., Korea Univ., Seoul, South Korea
Abstract :
We present a complete large-signal dynamic model of electroabsorption modulator integrated (EAMI) distributed feedback (DFB) lasers using the time-dependent transfer matrix method. With this model, it is possible to analyze dynamic characteristics depending on optical feedback and spatial hole burning. Also, we can separately calculate the laser and modulator chirp including the voltage-dependent modulator chirp parameter, the grating phase at the end of the laser section, the length of the waveguide region, and electrical coupling. Therefore, our model can provide better predictions regarding the laser and modulator chirp. The calculated large-signal chirp using our model has similar characteristics to the measured large-signal chirp for 10-Gb/s EAMI-DFB lasers.
Keywords :
chirp modulation; distributed feedback lasers; electro-optical modulation; electroabsorption; integrated optoelectronics; laser feedback; matrix algebra; optical hole burning; semiconductor device models; semiconductor lasers; 10 Gbit/s; EAMI-DFB lasers; Gb/s electroabsorption modulator; chirp characteristics; dynamic characteristics; electrical coupling; electroabsorption modulator integrated DFB lasers; integrated DFB lasers; large-signal dynamic model; laser section; modulator chirp; optical feedback; spatial hole burning; time-dependent transfer matrix method; voltage-dependent modulator; waveguide region; Chirp modulation; Distributed feedback devices; Laser feedback; Laser modes; Optical feedback; Optical waveguides; Phase modulation; Transmission line matrix methods; Voltage; Waveguide lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
