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Strongly gain-coupled (SGC) coolerless (-40°C~+85°C) MQW DFB lasers

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5 Author(s)
Hong, J. ; Adv. Technol., Nortel, Ottawa, Ont., Canada ; Blaauw, C. ; Moore, R. ; Jatar, S.
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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

Published in:

Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:5 ,  Issue: 3 )

Date of Publication:

May/Jun 1999

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