Title :
Tunable dual-mode operation in a chirped grating distributed-feedback laser
Author :
Hsu, A. ; Chuang, S.L. ; Tanbun-Ek, T.
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA
Abstract :
We report on the tunable dual-mode operation of a chirped grating distributed-feedback (DFB) laser device with two integrated modulators which act as tuning sections. A transfer-matrix model is used to simulate the amplified spontaneous emission spectrum for a chirped grating DFB laser. Several types of dual-mode operation are observed for wavelength spacings of 0.5 nm and 1.4 nm corresponding to frequency detunings of 63 GHz and 175 GHz.
Keywords :
chirp modulation; diffraction gratings; distributed feedback lasers; integrated optics; laser beams; laser feedback; laser modes; laser tuning; optical modulation; semiconductor lasers; superradiance; 175 GHz; 63 GHz; amplified spontaneous emission spectrum; chirped grating DFB laser; chirped grating distributed-feedback laser; chirped grating distributed-feedback laser device; dual-mode operation; frequency detunings; integrated modulator; transfer-matrix model; tunable dual-mode operation; tuning sections; wavelength spacings; Chirp modulation; Distributed feedback devices; Fiber lasers; Gratings; Laser feedback; Laser modes; Laser tuning; Semiconductor lasers; Spontaneous emission; Tunable circuits and devices;
Journal_Title :
Photonics Technology Letters, IEEE
