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Wide temperature operation of 40-Gb/s 1550-nm electroabsorption modulated lasers

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6 Author(s)
Saravanan, B.K. ; Optoelectron. Dept., Univ. of Ulm, Germany ; Wenger, T. ; Hanke, C. ; Gerlach, P.
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Electroabsorption modulated lasers (EMLs) exploiting the quantum confined Stark effect need thermoelectric coolers to achieve stable output power levels and dynamic extinction ratios. Temperature-independent operation is reported between 20°C and 70°C for InGaAlAs-InP-based monolithically integrated 1550-nm EMLs exploiting a shared active area at 40 Gb/s by actively controlling the electroabsorption modulator bias voltage. Dynamic extinction ratios of at least 8 dB and fiber-coupled mean modulated optical power of at least 0.85 mW are obtained over the mentioned temperature range.

Published in:

Photonics Technology Letters, IEEE  (Volume:18 ,  Issue: 7 )