Title :
Strongly gain-coupled (SGC) coolerless (-40°C~+85°C) MQW DFB lasers
Author :
Hong, J. ; Blaauw, C. ; Moore, R. ; Jatar, S. ; Dzioba, S.
Author_Institution :
Adv. Technol., Nortel, Ottawa, Ont., Canada
Abstract :
Single mode operation in a wide temperature range (-40°C~+85°C) has been obtained, from an etched-QW strongly gain-coupled (SGC) distributed-feedback laser at 1.3 μm. The SGC lasers exhibit an excellent sidemode-suppression-ratio (SMSR) of around 45-55 dB in continuous-wave operation, and a very good transient SMSR (TSMSR) of more than 35 dB during a gain-switched operation, both are over the entire temperature range. When mounted P-side up, the threshold current is about 12 mA at room temperature and 28 mA at +85°C. The output power is more than 20 mW with only 120-mA injection current at +85°C
Keywords :
distributed feedback lasers; laser modes; quantum well lasers; ridge waveguides; waveguide lasers; -40 to 85 C; 1.3 mum; 12 mA; 120 mA; continuous-wave operation; entire temperature range; etched-QW strongly gain-coupled distributed-feedback laser; gain-switched operation; good transient SMSR; injection current; output power; room temperature; sidemode-suppression-ratio; single mode operation; strongly gain-coupled coolerless MQW DFB lasers; threshold current; wide temperature range; Etching; Gratings; Laser modes; Laser theory; Optical coupling; Power lasers; Quantum well devices; Quantum well lasers; Shape; Temperature distribution;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/2944.788403
