Generation of tunable, high repetition rate optical frequency combs using on-chip silicon modulators

Nagarjun, K P and Jeyaselvan, Vadivukarassi and Selvaraja, Shankar Kumar and Supradeepa, V R (2018) Generation of tunable, high repetition rate optical frequency combs using on-chip silicon modulators. In: OPTICS EXPRESS, 26 (8). pp. 10744-10753.

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Abstract

We experimentally demonstrate tunable, highly-stable frequency combs with high repetition-rates using a single. charge injection based silicon PN modulator. In this work, we demonstrate combs in the C-band with over eight lines in a 20-dB bandwidth. We demonstrate continuous tuning of the center frequency in the C-band and tuning of the repetition-rate from 7.5GHz to 12.5GHz. We also demonstrate through simulations the potential for bandwidth scaling using an optimized silicon PIN modulator. We find that the time varying free carrier absorption due to carrier injection, an undesirable effect in data modulators, assists here in enhancing flatness in the generated combs. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Item Type:	Journal Article
Publication:	OPTICS EXPRESS
Publisher:	OPTICAL SOC AMER, 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
Additional Information:	Copy right for this article belong to OPTICAL SOC AMER, 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA
Department/Centre:	Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited:	09 May 2018 15:39
Last Modified:	25 Aug 2022 08:47
URI:	https://eprints.iisc.ac.in/id/eprint/59824

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