Title :
Theoretical analysis of tuning properties for a phase-tunable DFB laser
Author :
Olesen, Henning ; Pan, Xing ; Tromborg, Bjarne
Author_Institution :
Telecommun. Res. Lab., Horsholm, Denmark
Abstract :
The device consists of a conventional or a lambda /4-shifted DFB (distributed-feedback) laser monolithically integrated with an external waveguide section with separate electrodes for phase control. Tuning curves are presented for threshold current, frequency, linewidth, and output power. The analysis demonstrates a generally higher side mode suppression and larger frequency tuning range but also a larger linewidth for the lambda /4-shifted device compared to the device with a conventional DFB section.<>
Keywords :
distributed feedback lasers; integrated optics; laser modes; laser tuning; optical waveguides; electrodes; frequency tuning range; laser tuning; mode suppression; monolithic integration; phase-tunable DFB laser; threshold current; waveguide section; Distributed feedback devices; Frequency; Laboratories; Laser feedback; Laser modes; Laser theory; Laser tuning; Power generation; Stability; Waveguide lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
