Mode degeneration in bent photonic crystal fiber study by using the finite element method

Rahman, B. M. A.; Kejalakshmy, N.; Uthman, M.; Agrawal, Arti; Wongcharoen, T.; Grattan, K. T. V.

doi:10.1364/ao.48.00g131

Cited by 10 publications

(8 citation statements)

References 41 publications

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“…It can be noted that LR increases exponentially when the H x 11 mode reaches its cutoff, but, in this case, the loss for the H y 11 can also be high. Some deviations from the trend of their curves can be observed that are due to the degeneration of the core mode with the surface modes (in the silica bridges or cladding region) and similar features were reported earlier [8]. By optimizing the PCF parameters, such as the pitch length, Λ, the d 2 =Λ ratio, and the number of rings, it would appear possible to achieve suitable SMSP operation of a PCF [4].…”

Section: A Straight Smsp Pcfsupporting

confidence: 75%

Design of bent photonic crystal fiber supporting a single polarization

et al. 2011

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This is the unspecified version of the paper.This version of the publication may differ from the final published version. In this work, it is shown that the differential loss between the TE-and TM-polarized fundamental modes in a highly birefringent photonic crystal fiber (PCF) can be enhanced by bending the fiber. As a result, a design approach for single-mode single-polarization operation has been developed and is discussed. A rigorous full-vectorial H-field-based finite element approach, which includes the conformal transformation and the perfectly matched layer, is used to determine the single-polarization properties of such a highly birefringent PCF by exploiting its differential bending losses. Permanent

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Section: A Straight Smsp Pcfsupporting

confidence: 75%

Design of bent photonic crystal fiber supporting a single polarization

et al. 2011

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“…In this analysis, a Conformal Transformation [38], [39] was carried out to obtain the equivalent index of a bent PCF, and PML regions [35], [40] are introduced to absorb the leaking power. For a bent PCF, only onefold symmetry is available, and symmetry along the vertical axis is destroyed.…”

Section: Resultsmentioning

confidence: 99%

Design and Characterization of Low-Loss Porous-Core Photonic Crystal Fiber

et al. 2012

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A rigorous modal solution approach, based on the numerically efficient finiteelement method (FEM), has been used to design and characterize a photonic crystal fiber (PCF) with a porous air core, which has the potential for use for low-loss guidance of terahertz (THz) waves. Here, for the first time, it is reported that a large fraction of the power that is also well confined in the waveguide can be guided in the low-loss air holes, thus to reduce the overall modal loss. This novel PCF design can readily be fabricated by use of a range of techniques including stack-and-draw, extrusion, and drilling.

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“…The properties of the modal field of the ES-PCF such as A eff , non-linearity (γ) variation with core diameter and dispersion behaviour as a function of wavelength are presented. We use the definition given in [17] to calculate A eff . Dispersion and nonlinearity are calculated as per the formulae in [1] and [18], respectively.…”

Section: Resultsmentioning

confidence: 99%

Stacking the Equiangular Spiral

Agrawal

Azabi

Rahman

2013

IEEE Photon. Technol. Lett.

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This is the accepted version of the paper.This version of the publication may differ from the final published version. Fiber. (ES-PCF) The principle of Steiner chains and circle packing is exploited to obtain a non-hexagonal design using a stacking procedure based on Hexagonal Close Packing. The optical properties of the proposed structure are promising for SuperContinuum Generation. This approach could make accessible not only the equiangular spiral but also other quasi-crystal PCF through SaD. Permanent

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Mode degeneration in bent photonic crystal fiber study by using the finite element method

Cited by 10 publications

References 41 publications

Design of bent photonic crystal fiber supporting a single polarization

Design of bent photonic crystal fiber supporting a single polarization

Design and Characterization of Low-Loss Porous-Core Photonic Crystal Fiber

Stacking the Equiangular Spiral

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