Zero dispersion photonic crystal fibers for nonlinear applications

Vishwakarma, Rishabh; Kumar, Pranaw; Saha, S. K.; Rout, G. S.; Roy, Jibendu Sekhar

doi:10.1109/icccnt.2017.8203910

Cited by 2 publications

(2 citation statements)

References 22 publications

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“…Fig. 9 [17] with frequency for our solid core graded index Teflon based hexagonal PCF.The graph shows that the nonlinear coefficient reduces with an increase in frequency which is desirable for certain applications.…”

Section: Numerical Results and Discussionmentioning

confidence: 89%

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Terahertz Wave Propagation Characteristics in Graded Teflon Based Solid-Core Photonic Crystal Fibre

Dash

Mathur

Pandey

et al. 2023

J. Phys.: Conf. Ser.

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In the past few years, photonic crystal fibre (PCF) in the Terahertz spectrum is drawing significant attention because of its multifaceted applications in high-speed data communication, spectroscopy, sensing, etc. The proposed PCF structure is based on a Teflon solid core surrounded by porous cladding. Teflon has been used as a background material because of its high flexibility and the possibility of making longer PCFs, which is capable of guiding waves in the THz region. The porous cladding consists of circular air-holes positioned hexagonally whose diameters increase with each subsequent layer keeping the pitch constant thus providing a graded-index profile. The diameters of air holes in each hexagonal layer are 1 mm, 1.2 mm and 1.5 mm respectively, maintaining a constant pitch of 2mm and a perfectly matched layer (PML) thickness of 3mm. We have examined the transmission characteristics of the proposed profile in the frequency range of 0.8 THz to 2.5 THz. The modal solution of the profile is solved using the Finite Element Method based on COMSOL Multiphysics version 5.5. Using the graded-index profile, we have obtained a large effective modal area of around 5.6 mm2 at 1 THz and a low confinement loss of 2.25 × 10−4 dB/km at the same frequency. Due to this large effective modal area, we get higher damage threshold and weaker non-linear effects, making it suitable for high power applications.

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Section: Numerical Results and Discussionmentioning

confidence: 89%

“…Next, we discuss about the nonlinear effects of the proposed Teflon based PCF. Theoretically, Teflon has a bulk nonlinear refractive index n 2 of about 100 times higher as compared to silica [17]. This index is a measure of Kerr nonlinearity present in the profile.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%