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Proceedings Paper

Parity-time (PT)-symmetric closed-form quadrimer waveguides with focusing and defocusing nonlinearity
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Paper Abstract

In the present work, a PT-symmetric closed-form quadrimer waveguides system has been considered. We observe the saturation of the optical powers in the gain-guides in nonlinear regime under the coupling scheme considered. Moreover, we also find that accumulation of optical powers in the g-r parametric space (‘g’ is the gain/loss parameter, ‘r’ nonlinearity co-efficient) in the different waveguides significantly depends on the nature (i.e. focusing or defocusing) and the strength of nonlinearity and gain/loss profile. The potential applications of this quadrimer system might be in generating high constant-power optical sources.

Paper Details

Date Published: 15 June 2015
PDF: 6 pages
Proc. SPIE 9654, International Conference on Optics and Photonics 2015, 96541Y (15 June 2015); doi: 10.1117/12.2183017
Show Author Affiliations
Samit Kumar Gupta, Indian Institute of Technology Guwahati (India)
Amarendra K. Sarma, Indian Institute of Technology Guwahati (India)


Published in SPIE Proceedings Vol. 9654:
International Conference on Optics and Photonics 2015
Kallol Bhattacharya, Editor(s)

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