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Solitons in a 𝒫𝒯-symmetric 𝜒(2) coupler
Örebro University, School of Science and Technology. (matematik)ORCID iD: 0000-0002-2630-7479
Physical-Technical Institute, Uzbekistan Academy of Sciences, Tashkent, Uzbekistan .
Centro de Física Teórica e Computacional and Departamento de Física, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal .
2017 (English)In: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 42, no 20, p. 4079-4082Article in journal, Letter (Refereed) Published
Abstract [en]

We consider the existence and stability of solitons in a 𝜒(2) coupler. Both the fundamental and second harmonics (SHs) undergo gain in one of the coupler cores and are absorbed in the other one. The gain and loss are balanced, creating a parity-time (𝒫𝒯) symmetric configuration. We present two types of families of 𝒫𝒯-symmetric solitons having equal and different profiles of the fundamental and SHs. It is shown that the gain and loss can stabilize solitons. The interaction of stable solitons is shown. In the cascading limit, the model is reduced to the 𝒫𝒯-symmetric coupler with effective Kerr-type nonlinearity and the balanced nonlinear gain and loss.

Place, publisher, year, edition, pages
Optical Society of America, 2017. Vol. 42, no 20, p. 4079-4082
Keywords [en]
solitons, PT-symmetri, optical coupler, guided waves, propagation
National Category
Atom and Molecular Physics and Optics
Research subject
Physics
Identifiers
URN: urn:nbn:se:oru:diva-61268DOI: 10.1364/OL.42.004079ISI: 000412916200011PubMedID: 29028018Scopus ID: 2-s2.0-85031289752OAI: oai:DiVA.org:oru-61268DiVA, id: diva2:1147379
Note

Funding Agency:

International Islamic University Malaysia (IIUM)  FRGS 16-014-0513

Available from: 2017-10-05 Created: 2017-10-05 Last updated: 2017-11-07Bibliographically approved

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Ögren, Magnus

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