85°C investigation of uncooled 10-Gb/s directly modulatedInGaAsP RWG GC-DFB lasers |
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| Authors: | White JK Blaauw C Firth P Aukland P |
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| Affiliation: | High Performance Opt. Component Solutions, Nortel Networks, Ottawa, Ont.; |
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| Abstract: | The 10-Gb/s directly modulated performance of InGaAsP ridge waveguide (RWG) gain coupled (GC) DFB lasers is investigated up to 85°C. At room temperature, devices have relaxation oscillation frequencies frelax greater than 20 GHz and damping Γ greater than 100 GHz, frelax is greater than 6 GHz at 85°C. Constant output power or extinction ratio are possible from 25°C to 75°C chip temperature, with open eyes observable up to 85°C. Back-to-back transmission measurements in a Nortel Networks OC-192 system show error free transmission of a 223-1 pseudorandom bit sequence at 83°C |
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