Waveguides with absorbing boundaries: Nonlinearity controlled by an exceptional point and solitons

B. Midya, V. Konotop, Physical Review Letters 119 (2017).


Journal Article | Published | English
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Abstract
We reveal the existence of continuous families of guided single-mode solitons in planar waveguides with weakly nonlinear active core and absorbing boundaries. Stable propagation of TE and TM-polarized solitons is accompanied by attenuation of all other modes, i.e., the waveguide features properties of conservative and dissipative systems. If the linear spectrum of the waveguide possesses exceptional points, which occurs in the case of TM polarization, an originally focusing (defocusing) material nonlinearity may become effectively defocusing (focusing). This occurs due to the geometric phase of the carried eigenmode when the surface impedance encircles the exceptional point. In its turn, the change of the effective nonlinearity ensures the existence of dark (bright) solitons in spite of focusing (defocusing) Kerr nonlinearity of the core. The existence of an exceptional point can also result in anomalous enhancement of the effective nonlinearity. In terms of practical applications, the nonlinearity of the reported waveguide can be manipulated by controlling the properties of the absorbing cladding.
Publishing Year
Date Published
2017-07-18
Journal Title
Physical Review Letters
Volume
119
Issue
3
Article Number
033905
ISSN
IST-REx-ID

Cite this

Midya B, Konotop V. Waveguides with absorbing boundaries: Nonlinearity controlled by an exceptional point and solitons. Physical Review Letters. 2017;119(3). doi:10.1103/PhysRevLett.119.033905
Midya, B., & Konotop, V. (2017). Waveguides with absorbing boundaries: Nonlinearity controlled by an exceptional point and solitons. Physical Review Letters, 119(3). https://doi.org/10.1103/PhysRevLett.119.033905
Midya, Bikashkali, and Vladimir Konotop. “Waveguides with Absorbing Boundaries: Nonlinearity Controlled by an Exceptional Point and Solitons.” Physical Review Letters 119, no. 3 (2017). https://doi.org/10.1103/PhysRevLett.119.033905.
B. Midya and V. Konotop, “Waveguides with absorbing boundaries: Nonlinearity controlled by an exceptional point and solitons,” Physical Review Letters, vol. 119, no. 3, 2017.
Midya B, Konotop V. 2017. Waveguides with absorbing boundaries: Nonlinearity controlled by an exceptional point and solitons. Physical Review Letters. 119(3).
Midya, Bikashkali, and Vladimir Konotop. “Waveguides with Absorbing Boundaries: Nonlinearity Controlled by an Exceptional Point and Solitons.” Physical Review Letters, vol. 119, no. 3, 033905, American Physical Society, 2017, doi:10.1103/PhysRevLett.119.033905.

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