High-speed waveguide integrated silicon photodetector on a SiN-SOI platform for short reach datacom

Chatterjee, Avijit and Sikdar, SujitKumar and Selvaraja, Shankar Kumar (2019) High-speed waveguide integrated silicon photodetector on a SiN-SOI platform for short reach datacom. In: OPTICS LETTERS, 44 (7). pp. 1682-1685.

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Abstract

We present a waveguide integrated high-speed Si photodetector integrated with a silicon nitride (SiN) waveguide on an silicon-on-insulator (SOI) platform for short reach data communication in a 850 nm wavelength band. We demonstrate a waveguide couple Si pin photodetector responsivity of 0.44 A/W at 25 V bias. The frequency response of the photodetector is evaluated by the coupling of a femtosecond laser source through an SiN grating coupler of the integrated photodetector. We estimate a 3 dB bandwidth of 14 GHz at 20 V bias which, to the best of our knowledge, is the highest reported bandwidth for a waveguide integrated Si photodetector. We also present detailed optoelectronic DC and AC characterization of the fabricated devices. The demonstrated integrated photodetector could enable an integrated solution for scaling of short reach data communication and connectivity. (C) 2019 Optical Society of America

Item Type:	Journal Article
Publication:	OPTICS LETTERS
Publisher:	OPTICAL SOC AMER
Additional Information:	Copyright of this article belongs to OPTICAL SOC AMER
Department/Centre:	Division of Biological Sciences > Molecular Biophysics Unit Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	27 May 2019 07:17
Last Modified:	27 May 2019 07:17
URI:	http://eprints.iisc.ac.in/id/eprint/62271

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