State-of-the-art all-silicon sub-bandgap photodetectors at telecom and datacom wavelengths

Casalino, M., Coppola, G., De La Rue, R. M. and Logan, D. F. (2016) State-of-the-art all-silicon sub-bandgap photodetectors at telecom and datacom wavelengths. Laser and Photonics Reviews, 10(6), pp. 895-921. (doi:10.1002/lpor.201600065)

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Abstract

Silicon-based technologies provide an ideal platform for the monolithic integration of photonics and microelectronics. In this context, a variety of passive and active silicon photonic devices have been developed to operate at telecom and datacom wavelengths, at which silicon has minimal optical absorption - due to its bandgap of 1.12 eV. Although in principle this transparency window limits the use of silicon for optical detection at wavelengths above 1.1 μm, in recent years tremendous advances have been made in the field of all-silicon sub-bandgap photodetectors at telecom and datacom wavelengths. By taking advantage of emerging materials and novel structures, these devices are becoming competitive with the more well-established technologies, and are opening new and intriguing perspectives. In this paper, a review of the state-of-the-art is presented. Devices based on defect-mediated absorption, two-photon absorption and the internal photoemission effect are reported, their working principles are elucidated and their performance discussed and compared.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:De La Rue, Professor Richard
Authors: Casalino, M., Coppola, G., De La Rue, R. M., and Logan, D. F.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Laser and Photonics Reviews
Publisher:Wiley
ISSN:1863-8880
ISSN (Online):1863-8899
Published Online:26 September 2016
Copyright Holders:Copyright © 2016 WILEY-VCH Verlag GmbH and Co. KGaA
First Published:First published in Laser and Photonics Reviews 10(6): 895-921
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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