A novel proposal for ultra-fast all optical half subtractor based on nonlinear ring resonators

Optical half subtractors are required for designing any optical computation system. Operation speed and the on/off contrast ratios are very important characteristics for any optical logic device. A novel structure composed of three nonlinear ring resonators and some optical waveguides are used for d...

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Bibliographic Details
Published in:	Optical and quantum electronics Vol. 53; no. 6
Main Authors:	Khajeheian, Niloofar, Jamali, Jasem, Fatehi-Dindarlou, Mohammadhossein, Taghizadeh, Mehdi
Format:	Journal Article
Language:	English
Published:	New York Springer US 01-06-2021 Springer Nature B.V
Subjects:	Characterization and Evaluation of Materials Computer Communication Networks Electrical Engineering Lasers Optical Devices Optical waveguides Optics Photonics Physics Physics and Astronomy Resonators Nonlinear ring resonators Kerr effect Half subtracor Photonic crystals
Online Access:	Get full text
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Summary:	Optical half subtractors are required for designing any optical computation system. Operation speed and the on/off contrast ratios are very important characteristics for any optical logic device. A novel structure composed of three nonlinear ring resonators and some optical waveguides are used for designing for the proposed half subtractor with improved operation speed and on/off contrast ratio. The simulation results show that the rise time for this structure is 1.5 ps. Also the on/off contrast ratios for B and D are 13.7 dB and 14.5 dB respectively.
ISSN:	0306-8919 1572-817X
DOI:	10.1007/s11082-021-02982-0