Comparison of Different Grating Structure DFB Lasers for High-speed Electro-absorption Modulated Lasers

Siti Sulikhah, San-Liang Lee, Hen-Wai Tsao

2022

Abstract

High-speed electro-absorption modulated lasers (EMLs) with three DFB laser structures (uniform grating (UG), asymmetric quarter-wave-shifted (QWS), and partially corrugated grating (PCG)) are investigated here under 56-Gb/s NRZ signal modulation. It is known that the former UG-EML suffers from performance degradation due to the residual facet reflection (RFR) and facet phase fluctuation. PCG-EML with 300-µm long laser section, 175-µm long grating section, 100-µm long modulator section, and 10-3 front-facet reflectivity can produce about ~83.8% dynamic single-mode yield (SMY), improved average Q-value, and reduced low-frequency drop (LFD) in the modulation response. By choosing the optimal grating length for the PCG-DFB and applying an asymmetric QWS-DFB, the EMLs can maintain good static- and dynamic performances over a wide range of the linear gain coefficients.

Paper Citation

in Harvard Style

Sulikhah S., Lee S. and Tsao H. (2022). Comparison of Different Grating Structure DFB Lasers for High-speed Electro-absorption Modulated Lasers. In Proceedings of the 10th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS, ISBN 978-989-758-554-8, pages 172-178. DOI: 10.5220/0010996600003121

in Bibtex Style

@conference{photoptics22,
author={Siti Sulikhah and San-Liang Lee and Hen-Wai Tsao},
title={Comparison of Different Grating Structure DFB Lasers for High-speed Electro-absorption Modulated Lasers},
booktitle={Proceedings of the 10th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS,},
year={2022},
pages={172-178},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0010996600003121},
isbn={978-989-758-554-8},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 10th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS,
TI - Comparison of Different Grating Structure DFB Lasers for High-speed Electro-absorption Modulated Lasers
SN - 978-989-758-554-8
AU - Sulikhah S.
AU - Lee S.
AU - Tsao H.
PY - 2022
SP - 172
EP - 178
DO - 10.5220/0010996600003121