Title :
Widely frequency-tunable amplified feedback lasers for 10-GHz optical pulsation
Author :
Yee, Su ; Leem, Young Ahn ; Kim, Sung-Bock ; Sim, Eundeok ; Yun, Ho-Gyeong ; Kim, Dong Churl ; Park, Kyung Hyun
Author_Institution :
Opt. Devices Res. Dept., Electron. & Telecommun. Res. Inst., Daejeon, South Korea
fDate :
6/1/2005 12:00:00 AM
Abstract :
Monolithic amplified feedback semiconductor lasers are demonstrated as a new solution to 10-GHz optical pulsation, where self-pulsations are generated according to the concept of a single-mode laser with shortly delayed optical feedback. They consist of a loss-coupled distributed feedback section operating as a single-mode laser and an integrated feedback cavity including a phase control, an amplifier, and a transparency section. The pulsation frequency is continuously tunable in the range of 7-11.5 GHz with an extinction ratio above 6.5 dB, which indicates that precise control of a cavity length is not needed.
Keywords :
delays; distributed feedback lasers; integrated optics; laser cavity resonators; laser feedback; laser modes; laser tuning; optical communication equipment; optical control; optical losses; optical pulse generation; phase control; semiconductor optical amplifiers; synchronisation; transparency; 7 to 11.5 GHz; amplified feedback lasers; extinction ratio; integrated feedback cavity; loss-coupled distributed feedback section; monolithic semiconductor lasers; optical amplifier; optical clock recovery; optical pulsation; phase control; self-pulsations; shortly delayed optical feedback; single-mode laser; transparency section; widely frequency-tunable lasers; Delay; Distributed feedback devices; Frequency; Laser feedback; Optical feedback; Optical losses; Optical variables control; Phase control; Semiconductor lasers; Stimulated emission; Distributed feedback (DFB) lasers; optical feedback; optical pulse generation; semiconductor lasers;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.847450
