Traveling-Wave Electroabsorption Modulated Laser Based on Identical Epitaxial Layer Scheme and HSQ Planarization

Al-Moathin, A., Li, C. , Wang, J., Al-Taai, Q. R. A. , Eddie, I., Ye, S. , Hou, L. , Thoms, S. , Kelly, A. and Marsh, J. H. (2021) Traveling-Wave Electroabsorption Modulated Laser Based on Identical Epitaxial Layer Scheme and HSQ Planarization. In: CLEO/Europe-EQEC 2021, Munich, Germany, 21-25 Jun 2021, ISBN 9781665418768 (doi: 10.1109/CLEO/Europe-EQEC52157.2021.9542652)

Abstract

Electroabsorption modulated lasers (EMLs), comprising a distributed feedback (DFB) laser and electroabsorption modulator (EAM) monolithically integrated into the same chip, are attractive because of their compact size, low fabrication cost, and their capability to offer a high modulation speed with low drive voltage, low chirp, and high extinction ratio [1] , [2] . The modulation speed of the EML is limited by the RC constant of the EAM electrode, which is conventionally configured with either a lumped or travelling-wave (TW) electrode. The latter approach overcomes the RC limit by including the EAM in a microwave circuit matched to the source [3] . However, due to restrictions imposed by size and materials, TW EAMs have to date been integrated externally using a specifically designed material structure or monolithically using selective area growth.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Al-Taai, Dr Qusay and Marsh, Professor John and Li, Professor Chong and Al-Moathin, Mr Ali and Thoms, Dr Stephen and Kelly, Professor Anthony and Hou, Dr Lianping and Ye, Dr Shengwei
• Authors: Al-Moathin, A., Li, C., Wang, J., Al-Taai, Q. R. A., Eddie, I., Ye, S., Hou, L., Thoms, S., Kelly, A., and Marsh, J. H.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• ISBN: 9781665418768
• Copyright Holders: Copyright © 2021 IEEE
• First Published: First published in 2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
• Publisher Policy: Reproduced in accordance with the publisher copyright policy