Graphene-assisted critically-coupled optical ring modulator
Authors: Midrio M., Boscolo S., Moresco M., Romagnoli M., De Angelis C., Locatelli A., Capobianco A.D.
Autors Affiliation: Dipartimento di Ingegneria Elettrica Gestionale e Meccanica, Università degli Studi di Udine, 33100 Udine, Italy; PhotonIC Corporation, 5800 Uplander Way, Los Angeles, CA 90230, USA; Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, USA; Dipartimento di Ingegneria dell’Informazione, Università degli Studi di Brescia, 25123 Brescia, Italy; Dipartimento di Ingegneria dell’Informazione, Università degli Studi di Padova, 35131 Padova, Italy
Abstract: Graphene\’s conductivity at optical frequencies can be varied upon injection of carriers. In the present paper, this effect is used to modulate losses of an optical wave traveling inside a ring cavity. This way an optical modulator based on the critical-coupling concept first introduced by Yariv can be realized. Through numerical simulations, we show that a modulator featuring a bandwidth as large as 100 GHz can be designed with switching energy in the order of few fJ per bit. Also, we show that operations with driving voltages below 1.2 volt could be obtained, thus making the proposed modulator compatible with requirements of low-voltage CMOS technology. (C) 2012 Optical Society of America
Journal/Review: OPTICS EXPRESS
Volume: 20 (21) Pages from: 23144 to: 23155
KeyWords: Graphene photonicsDOI: 10.1364/OE.20.023144Citations: 64data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2022-12-04References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here