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Proceedings Paper

High-speed integrated semiconductor micro-ring lasers with efficient off-axis parabolic reflectors
Author(s): Guy Verschaffelt; Zhuoran Wang; Yi Shu; Gabor Mezosi; Jan Danckaert; Marc Sorel; Siyuan Yu
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Paper Abstract

We report on a novel mirror design for micro-ring semiconductor ring lasers that uses those mirrors to connect straight waveguide sections in a closed loop. The nearly parabolic mirrors are designed by ray-tracing to optimize their shape. The efficiency of the designs is verified with FDTD simulations, with a simulated coupling efficiency of 98%. We have successfully fabricated devices based on this design with an equivalent circular ring radius of 16μm. These devices operate in continuous wave at room temperature with a threshold current of only 22mA and an emission wavelength of 1.55μm.

Paper Details

Date Published: 8 May 2008
PDF: 9 pages
Proc. SPIE 6997, Semiconductor Lasers and Laser Dynamics III, 699716 (8 May 2008); doi: 10.1117/12.781250
Show Author Affiliations
Guy Verschaffelt, Vrije Univ. Brussel (Belgium)
Zhuoran Wang, Univ. of Bristol (United Kingdom)
Yi Shu, Univ. of Bristol (United Kingdom)
Gabor Mezosi, Univ. of Glasgow (United Kingdom)
Jan Danckaert, Vrije Univ. Brussel (Belgium)
Marc Sorel, Univ. of Glasgow (United Kingdom)
Siyuan Yu, Univ. of Bristol (United Kingdom)

Published in SPIE Proceedings Vol. 6997:
Semiconductor Lasers and Laser Dynamics III
Krassimir P. Panajotov; Marc Sciamanna; Angel A. Valle; Rainer Michalzik, Editor(s)

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