Ultrafast optical switching using parity-time symmetric Bragg gratings

Phang, Sendy; Vukovic, Ana; Susanto, Hadi; Benson, Trevor M.; Sewell, Phillip

Abstract

This paper reports on time-domain modeling of an optical switch based on the parity–time (PT) symmetric Bragg grating. The switching response is triggered by suddenly switching on the gain in the Bragg grating to create a PT-symmetric Bragg grating. Transient and dynamic behaviors of the PT Bragg gratings are analyzed using the time-domain numerical transmission line modeling method including a simple gain saturation model. The on/off ratio and the switching time of the PT Bragg grating optical switch are analyzed in terms of the level of gain introduced in the system and the operating frequency. The paper also discusses the effect the gain saturation has on the operation of the PT-symmetric Bragg gratings.

Citation

Phang, S., Vukovic, A., Susanto, H., Benson, T. M., & Sewell, P. (2013). Ultrafast optical switching using parity-time symmetric Bragg gratings. Journal of the Optical Society of America B, 30(11), https://doi.org/10.1364/JOSAB.30.002984

• Journal Article Type: Article
• Acceptance Date: Sep 26, 2013
• Publication Date: Oct 25, 2013
• Deposit Date: May 18, 2015
• Publicly Available Date: May 18, 2015
• Journal: Journal of the Optical Society of America B
• Print ISSN: 0740-3224
• Electronic ISSN: 1520-8540
• Publisher: Optical Society of America
• Peer Reviewed: Peer Reviewed
• Volume: 30
• Issue: 11
• DOI: https://doi.org/10.1364/JOSAB.30.002984
• Keywords: Optical devices; Nonlinear optics
• Public URL: https://nottingham-repository.worktribe.com/output/718418
• Publisher URL: http://www.opticsinfobase.org/josab/abstract.cfm?uri=josab-30-11-2984
• Additional Information: This paper was published in Journal of the Optical Society of America B and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/josab/abstract.cfm?uri=josab-30-11-2984. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
• Contract Date: May 18, 2015