A defected core hexagonal structure photonic crystal fiber (PCF) having attractive properties is proposed with the finite element method (FEM) to characterize the design utilizing an anisotropic perfectly matched layer (PML) to determine the fiber loss. From the simulation we have shown, the proposed structure exhibits birefringence of <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="12596_2025_2751_Article_IEq1.gif" Format="GIF" Height="17" Rendition="HTML" Resolution="72" Type="Linedraw" Width="82" /> </InlineMediaObject> <EquationSource Format="TEX">$4.53 \times 10^{-2}$</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>4.53</mn> <mo>×</mo> <msup> <mn>10</mn> <mrow> <mo>-</mo> <mn>2</mn> </mrow> </msup> </mrow> </math></EquationSource> </InlineEquation>, a nonlinear coefficient of <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="12596_2025_2751_Article_IEq2.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="103" /> </InlineMediaObject> <EquationSource Format="TEX">$55.6 W^{-1}km^{-1}$</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>55.6</mn> <msup> <mi>W</mi> <mrow> <mo>-</mo> <mn>1</mn> </mrow> </msup> <mi>k</mi> <msup> <mi>m</mi> <mrow> <mo>-</mo> <mn>1</mn> </mrow> </msup> </mrow> </math></EquationSource> </InlineEquation>, a confinement loss in the range of <InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="12596_2025_2751_Article_IEq3.gif" Format="GIF" Height="20" Rendition="HTML" Resolution="72" Type="Linedraw" Width="90" /> </InlineMediaObject> <EquationSource Format="TEX">$10^{-3} dB/km$</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msup> <mn>10</mn> <mrow> <mo>-</mo> <mn>3</mn> </mrow> </msup> <mi>d</mi> <mi>B</mi> <mo stretchy="false">/</mo> <mi>k</mi> <mi>m</mi> </mrow> </math></EquationSource> </InlineEquation>, a residual dispersion slope (RDS) of 0.0004/nm, and a negative dispersion of <InlineEquation ID="IEq4"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="12596_2025_2751_Article_IEq4.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="138" /> </InlineMediaObject> <EquationSource Format="TEX">$-1286 ps/(nm.km)$</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mo>-</mo> <mn>1286</mn> <mi>p</mi> <mi>s</mi> <mo stretchy="false">/</mo> <mo stretchy="false">(</mo> <mi>n</mi> <mi>m</mi> <mo>.</mo> <mi>k</mi> <mi>m</mi> <mo stretchy="false">)</mo> </mrow> </math></EquationSource> </InlineEquation> at 1550nm wavelength. In addition, we have analyzed the variation of parameters that indicate the suitability of the design for dispersion compensation, supercontinuum generation, and sensing. As the design is a simple hexagonal structure, it is very easy to fabricate the proposed structure with existing techniques.

Defected core matched residual dispersion slope non-linear high birefringent photonic crystal fiber

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发表日期：

2025年5月18日

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Asif Shariar,
Kaniz Fatema Keya,
Alok Kumar Paul

摘要

A defected core hexagonal structure photonic crystal fiber (PCF) having attractive properties is proposed with the finite element method (FEM) to characterize the design utilizing an anisotropic perfectly matched layer (PML) to determine the fiber loss. From the simulation we have shown, the proposed structure exhibits birefringence of $4.53 \times 10^{-2}$ $4.53 \times 10^{- 2}$ , a nonlinear coefficient of $55.6 W^{-1}km^{-1}$ $55.6 W^{- 1} k m^{- 1}$ , a confinement loss in the range of $10^{-3} dB/km$ $10^{- 3} d B / k m$ , a residual dispersion slope (RDS) of 0.0004/nm, and a negative dispersion of $-1286 ps/(nm.km)$ $- 1286 p s / (n m . k m)$ at 1550nm wavelength. In addition, we have analyzed the variation of parameters that indicate the suitability of the design for dispersion compensation, supercontinuum generation, and sensing. As the design is a simple hexagonal structure, it is very easy to fabricate the proposed structure with existing techniques.