Title :
Widely tunable S/S+ band thulium-doped fiber laser locked to 50-GHz ITU-T grid
Author :
Jonghan Park ; Seong Joon Ahn ; Won Jae Lee ; Junghwan Lee ; Ho Suhng Suh ; Namkyoo Park
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., South Korea
Abstract :
We demonstrate an S/S+ band discretely tunable thulium-doped fiber laser (TTDFL), locked to the 50-GHz ITU-T grid. By optimizing the inversion dynamics of the thulium-doped fiber while using a dual-wavelength (1.4 and 1.5 μm) pumping scheme, 66.2 nm of tuning range (1452.2-1518.4 nm) that cover most of the thulium bandwidth, and more than 6.7 dBm of output power were obtained. By controlling the temperature of the fine grid filter, we also stabilized the output frequency of the TTDFL to within /spl plusmn/2 pm.
Keywords :
laser beams; laser frequency stability; laser mode locking; laser tuning; optical fibre amplifiers; optical fibre communication; optical filters; optical pumping; optical transmitters; thulium; wavelength division multiplexing; 1.4 micron; 1.5 micron; 1452.2 to 1518.4 nm; 50 GHz; ITU-T grid; dense wavelength-division multiplexing; dual-wavelength pumping scheme; fine grid filter; inversion dynamics; optical fiber communication; optical fiber lasers; output frequency stabilization; thulium-doped fiber amplifiers; thulium-doped fiber laser; widely tunable S/S+ band; Erbium-doped fiber lasers; Fiber lasers; Filters; Laser tuning; Optical fiber amplifiers; Optical fiber communication; Optical fiber devices; Optical fibers; Pump lasers; Tunable circuits and devices;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.823136
