https://doi.org/10.1140/epjp/s13360-023-04154-3
Regular Article
A rectangular porous-core cyclic olefin copolymer fiber applied to generate a broadband spectrum in THz region
1
Department of Nanotechnology, Graduate University of Advanced Technology, P.O. Box: 76315-117, Kerman, Iran
2
Department of Photonics, Graduate University of Advanced Technology, Kerman, Iran
Received:
15
January
2023
Accepted:
1
June
2023
Published online:
10
June
2023
A rectangular porous-core cyclic olefin copolymer fiber is characterized as being a low loss waveguide with ultra-low flattened dispersion and high birefringence in THz region. In this work, in addition to calculating the optical characteristics of this waveguide, the coupled generalized nonlinear Schrödinger equation describing the supercontinuum generation process is numerically solved for it. The generated spectral width is significantly wider than those for most common supercontinuum sources. In addition, our simulation results indicate that when a linearly polarized input pulse of 13.8 MW peak power and 22 fs pulse width is launched into the assumed waveguide, new frequencies are generated at the confined x- and y-polarized modes. The simulation results exhibit the generation of a broadband THz spectrum ranging from 160 to 260 µm at the output of the waveguide.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
