Optimization of the design and mode of operation of a QD laser for reducing the heat-to-bitrate ratio

Journal Article · Thu Aug 15 00:00:00 EDT 2013 · Semiconductors

DOI:https://doi.org/10.1134/S106378261308023X· OSTI ID:22210579

Savelyev, A. V. ^[1]; Maximov, M. V. ^[2]; Kryzhanovskaya, N. V. ^[1]; Gordeev, N. Yu.; Shernyakov, Yu. M. ^[2]; Payusov, A. S.; Nadtochiy, A. M.; Zubov, F. I.; Korenev, V. V. ^[1]

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1. Russian Academy of Sciences, St. Petersburg Academic University-Nanotechnology Research and Education Center (Russian Federation)
2. Russian Academy of Sciences, Ioffe Physical-Technical Institute (Russian Federation)

Heat dissipation under the high-speed modulation of quantum dot edge-emitting lasers is considered. It is shown that, for a given laser diode, there is a bias current at which the heat-to-bitrate ratio is minimized. Moreover, there exists a certain optimal optical loss of the laser cavity at which the lowest heat-to-bitrate ratio is provided for any design of edge-emitting lasers that can be fabricated from an epitaxial structure. The heat-to-bitrate ratio and the corresponding bitrate are numerically calculated and analytical expressions are derived. It is demonstrated that the heat-to-bitrate ratio of quantum dot edge-emitting lasers can be less than 0.4 pJ/bit at a bitrate exceeding 10 Gbit/s.

• OSTI ID: 22210579
• Journal Information: Semiconductors, Vol. 47, Issue 8; Other Information: Copyright (c) 2013 Pleiades Publishing, Ltd.; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7826
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
36 MATERIALS SCIENCE
HEAT
LASER CAVITIES
LASERS
QUANTUM DOTS
THERMAL DIFFUSIVITY