28 April 2016 High-speed directly modulated 1.5 μm quantum dot lasers
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Abstract
An overview is given about the recent improvement in 1.5 μm QD lasers for direct modulation. Based on improved QD epitaxy with a reduced inhomogeneous size distribution, record values in small signal modulation bandwidth of more than 15 GHz and in digital modulation of up to 36 GBit/s were obtained. Due to the high modal gain and robust ground state transition, the temperature dependence of the laser performance could be very much improved with characteristic temperatures of T0 = 125 K and T1 near to 400 K. Also the impact of the temperature on the digital modulation speed will be discussed.
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Johann Peter Reithmaier, Saddam Banyoudeh, Alireza Abdollahinia, Florian Schnabel, Vitalii Sichkovskyi, Ori Eyal, Gadi Eisenstein, "High-speed directly modulated 1.5 μm quantum dot lasers", Proc. SPIE 9892, Semiconductor Lasers and Laser Dynamics VII, 98920A (28 April 2016); doi: 10.1117/12.2230231; https://doi.org/10.1117/12.2230231
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