Highly Negative Dispersive, Low Loss Single-Mode Photonic Crystal Fiber
In this paper a new five-layer circular air holes photonic crystal fiber (PCF) having low dispersion and confinement loss is analyzed. A full-vector finite-element method approach is used . Due to proper selection of air-fill fraction, it has been made possible to obtain the two required properties of PCF for wide range of wavelengths, that is, low (nearly zero and high negative) dispersion and ultralow confinement loss of the order of 10−7 dB/km. It has been found that the proposed fiber is single mode. The confinement loss and dispersion is demonstrated for wavelength range which are 1–2 µm. Thus highly negative dispersion of PCFs useful for application in optical communication links as dispersion compensating fibers.
KeywordsConfinement loss Dispersion Finite-element method Photonic crystal fiber Single-mode fiber Single-polarization single-mode (SPSM) fibers
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