Dispersion engineering of highly nonlinear chalcogenide suspended-core fibers

E. Coscelli, F. Poli, J. Li, A. Cucinotta, S. Selleri

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Chalcogenide optical fibers are currently undergoing intensive investigation with the aim of exploiting the excellent glass transmission and nonlinear characteristics in the near- and mid-infrared for several applications. Further enhancement of these properties can be obtained, for a particular application, with optical fibers specifically designed that are capable of providing low effective area together with a properly tailored dispersion, matching the characteristics of the laser sources used to excite nonlinear effects. Suspended-core photonic crystal fibers are ideal candidates for nonlinear applications, providing small-core waveguides with large index contrast and tunable dispersion. In this paper, the dispersion properties of As2S3 suspended-core fibers are numerically analyzed, taking into account, for the first time, all the structural parameters, including the size and the number of the glass bridges. The results show that a proper design of the cladding struts can be exploited to significantly change the fiber properties, altering the maximum value of the dispersion parameter and shifting the zero-dispersion wavelengths over a range of 400 nm.

Original languageEnglish
Article number7083701
Number of pages8
JournalIEEE Photonics Journal
Issue number3
Publication statusPublished - Jun 2015

Bibliographical note

Creative Commons Attribution License (CC BY)


  • fiber nonlinear optics.
  • Optical fibers


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