Title :
Cascaded strongly gain-coupled (SGC) DFB lasers with 15-nm continuous-wavelength tuning
Author :
Hong, J. ; Cyr, M. ; Kim, H. ; Jatar, S. ; Rogers, C. ; Goodchild, D. ; Clements, S.
Author_Institution :
Dept. of Adv. Technol., Nortel, Ottawa, Ont., Canada
Abstract :
More than 15 nm of continuous wavelength tuning range has been obtained by means of temperature tuning and current setting in three-section grating-cascaded strongly gain-coupled distributed-feedback lasers. Within the entire wavelength tuning range, a sidemode-suppression ratio beyond 50 dB, a linewidth of less than 10 MHz, and a fiber-coupled output power of more than 5 dBm were achieved.
Keywords :
diffraction gratings; distributed feedback lasers; laser modes; laser tuning; optical fibre couplers; quantum well lasers; ridge waveguides; waveguide lasers; MQW lasers; cascaded strongly gain-coupled DFB lasers; continuous-wavelength tuning; current setting; entire wavelength tuning range; fiber-coupled output power; linewidth; sidemode-suppression ratio; temperature tuning; three-section grating-cascaded strongly gain-coupled distributed-feedback lasers; Diode lasers; Fiber lasers; Gratings; Laser modes; Laser tuning; Quantum cascade lasers; Semiconductor lasers; Temperature distribution; Tunable circuits and devices; Waveguide lasers;
Journal_Title :
Photonics Technology Letters, IEEE
