Impact of dispersive and saturable gain/loss on bistability of nonlinear parity-time Bragg gratings

We report on the impact of realistic gain and loss models on the bistable operation of nonlinear parity–time (PT) Bragg gratings. In our model we include both dispersive and saturable gain and show that levels of gain/loss saturation can have a significant impact on the bistable operation of a nonli...

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Main Authors:	Phang, Sendy, Vukovic, Ana, Susanto, Hadi, Benson, Trevor M., Sewell, Phillip
Format:	Article
Language:	English
Published:	Optical Society of America 2014
Online Access:	http://eprints.nottingham.ac.uk/28714/ http://eprints.nottingham.ac.uk/28714/ http://eprints.nottingham.ac.uk/28714/ http://eprints.nottingham.ac.uk/28714/7/bistable%20saturable%20ptbg_submitted_20_03_2014.pdf

id	nottingham-28714
recordtype	eprints
spelling	nottingham-287142018-07-02T08:36:47Z http://eprints.nottingham.ac.uk/28714/ Impact of dispersive and saturable gain/loss on bistability of nonlinear parity-time Bragg gratings Phang, Sendy Vukovic, Ana Susanto, Hadi Benson, Trevor M. Sewell, Phillip We report on the impact of realistic gain and loss models on the bistable operation of nonlinear parity–time (PT) Bragg gratings. In our model we include both dispersive and saturable gain and show that levels of gain/loss saturation can have a significant impact on the bistable operation of a nonlinear PT Bragg grating based on GaAs material. The hysteresis of the nonlinear PT Bragg grating is analyzed for different levels of gain and loss and different saturation levels. We show that high saturation levels can improve the nonlinear operation by reducing the intensity at which the bistability occurs. However, when the saturation intensity is low, saturation inhibits the PT characteristics of the grating. Optical Society of America 2014-04-21 Article PeerReviewed application/pdf en http://eprints.nottingham.ac.uk/28714/7/bistable%20saturable%20ptbg_submitted_20_03_2014.pdf Phang, Sendy and Vukovic, Ana and Susanto, Hadi and Benson, Trevor M. and Sewell, Phillip (2014) Impact of dispersive and saturable gain/loss on bistability of nonlinear parity-time Bragg gratings. Optics Letters, 39 (9). pp. 2603-2606. ISSN 0146-9592 http://www.opticsinfobase.org/ol/abstract.cfm?uri=ol-39-9-2603 doi:10.1364/OL.39.002603 doi:10.1364/OL.39.002603
repository_type	Digital Repository
institution_category	Local University
institution	University of Nottingham Malaysia Campus
building	Nottingham Research Data Repository
collection	Online Access
language	English
description	We report on the impact of realistic gain and loss models on the bistable operation of nonlinear parity–time (PT) Bragg gratings. In our model we include both dispersive and saturable gain and show that levels of gain/loss saturation can have a significant impact on the bistable operation of a nonlinear PT Bragg grating based on GaAs material. The hysteresis of the nonlinear PT Bragg grating is analyzed for different levels of gain and loss and different saturation levels. We show that high saturation levels can improve the nonlinear operation by reducing the intensity at which the bistability occurs. However, when the saturation intensity is low, saturation inhibits the PT characteristics of the grating.
format	Article
author	Phang, Sendy Vukovic, Ana Susanto, Hadi Benson, Trevor M. Sewell, Phillip
spellingShingle	Phang, Sendy Vukovic, Ana Susanto, Hadi Benson, Trevor M. Sewell, Phillip Impact of dispersive and saturable gain/loss on bistability of nonlinear parity-time Bragg gratings
author_facet	Phang, Sendy Vukovic, Ana Susanto, Hadi Benson, Trevor M. Sewell, Phillip
author_sort	Phang, Sendy
title	Impact of dispersive and saturable gain/loss on bistability of nonlinear parity-time Bragg gratings
title_short	Impact of dispersive and saturable gain/loss on bistability of nonlinear parity-time Bragg gratings
title_full	Impact of dispersive and saturable gain/loss on bistability of nonlinear parity-time Bragg gratings
title_fullStr	Impact of dispersive and saturable gain/loss on bistability of nonlinear parity-time Bragg gratings
title_full_unstemmed	Impact of dispersive and saturable gain/loss on bistability of nonlinear parity-time Bragg gratings
title_sort	impact of dispersive and saturable gain/loss on bistability of nonlinear parity-time bragg gratings
publisher	Optical Society of America
publishDate	2014
url	http://eprints.nottingham.ac.uk/28714/ http://eprints.nottingham.ac.uk/28714/ http://eprints.nottingham.ac.uk/28714/ http://eprints.nottingham.ac.uk/28714/7/bistable%20saturable%20ptbg_submitted_20_03_2014.pdf
first_indexed	2018-09-06T11:51:18Z
last_indexed	2018-09-06T11:51:18Z
_version_	1610858814104403968

Impact of dispersive and saturable gain/loss on bistability of nonlinear parity-time Bragg gratings

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