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, Johann Peter Reithmaier, Saddam Banyoudeh, Saddam Banyoudeh, Alireza Abdollahinia, Alireza Abdollahinia, Florian Schnabel, Florian Schnabel, Vitalii Sichkovskyi, Vitalii Sichkovskyi, Ori Eyal, Ori Eyal, Gadi Eisenstein, 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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