Dispersion properties of square-lattice photonic crystal fibers

Bouk, A.H.; Cucinotta, Annamaria; Poli, Federica; Selleri, Stefano

doi:10.1364/opex.12.000941

Cited by 99 publications

(63 citation statements)

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“…Most of the air holes in the PCFs cladding have been arranged either in a periodic triangular or periodic square orientation. The modal properties, in particular, and the dispersion properties of the above types of PCFs can be altered by varying the hole-to-hole spacing (Λ) and the air hole diameter ( ) with air-filling fraction being /Λ [3,4]. Both types of PCFs with a silica background can be successfully implemented to compensate the positive dispersion parameter and dispersion slope of the existing inline fibers [3,4].…”

Section: Introductionmentioning

confidence: 99%

Circular Photonic Crystal Fibers: Numerical Analysis of Chromatic Dispersion and Losses

Maji

Chaudhuri

2013

ISRN Optics

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Detailed numerical analysis for dispersion properties and losses has been carried out for a new type of Photonic crystal fiber where the air-holes are arranged in a circular pattern with a silica matrix called as Circular Photonic Crystal Fiber (C-PCF). The dependence of different PCF geometrical parameters namely different circular spacings, air-hole diameter and numbers of air-hole rings are carried out in detail towards practical applications. Our numerical analysis establishes that total dispersion is strongly affected by the interplay between material dispersion and waveguide dispersion. For smaller air-filing fraction, adding extra airhole rings does not change dispersion much whereas for higher air-filling fraction, the dispersion nature changes significantly. With proper adjustment of the parameters ultra-flattened dispersion could be achieved; though the application can be limited by higher losses. However, the ultra-flat dispersion fibers can be used for practical high power applications like supercontinuum generation (SCG) by reducing the loss at the pumping wavelength by increasing the no of air-hole rings. Broadband smooth SCG can also be achieved with low loss oscillating near-zero dispersion fiber with higher no of air-hole rings. The detail study shows that for realistic dispersion engineering we need to be careful for both loss and dispersion.

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Section: Introductionmentioning

confidence: 99%

Circular Photonic Crystal Fibers: Numerical Analysis of Chromatic Dispersion and Losses

Maji

Chaudhuri

2013

ISRN Optics

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“…As a result, their dispersion and dispersion tolerance varies uniquely. Figure 3a shows the fiber cross-section of a four-ring S-PCF (Bouk et al 2004) with the air-hole to air-holes spacing, or pitch K, and the diameter d of the air-holes. The first ring comprises eight air-holes; the second ring comprises 16 air-holes, and so on.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…The core is formed by omitting a single air-hole from the center (Figure 3a). Bouk et al (2004) has reported positional change of the air-holes for the square PCF and the hexagonal PCF. Figure 3b shows the chromatic dispersion characteristics of the S-PCF as a function of wavelength.…”

Section: Simulation Resultsmentioning

confidence: 99%

Dispersion Tolerance of Various Photonic Crystal Fibers

Razzak

Namihira

Saber

et al. 2007

International Journal of Optomechatronics

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Chromatic dispersion characteristics of optical fibers with near zero magnitude and slope is very important for such applications as optical transmission systems, dispersion compensation, and nonlinear optics. Theoretically-designed dispersion characteristics require a tolerance of AE2% to ensure reasonable dispersion accuracy during the fabrication process. This article describes dispersion accuracy of various photonic crystal fibers due to changes in dimension of the first ring of air-holes, as it is mostly responsible for the slope characteristics of the dispersion curves. It is demonstrated that for identical design parameters octagonal photonic crystal fibers can assume better dispersion accuracy in comparison to other configurations, such as hexagonal photonic crystal fibers, square photonic crystal fibers, and decagonal photonic crystal fibers in a 1.20 to 1.70 mm wavelength. Dispersion tolerance due to the dimension of the first ring of an optimized octagonal photonic crystal fiber is also investigated. It is found that the optimized octagonal fiber can also assume promising dispersion tolerance to dimension of the first ring with ultra-flattened characteristics in the 1.20 to 1.70 mm wavelength range.

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“…2, the second in the center of the red squares (inverse Thue-Morse fiber). Note that the cladding of these PQFs can be considered as a rectangular arrangement of air holes in silica [26] where some of them have been removed according to the Thue-Morse rules. The core of the fibers is performed by reducing the size of the central holes in the direct fiber or by introducing an extra central hole in the inverse fiber.…”

Section: Design Of the Thue-morse Based Pqfmentioning

confidence: 99%