A high-birefringent photonic quasi-crystal fiber with two elliptical air holes
TL;DR: A photonic quasi-crystal fiber (PQF) with high birefringence based on ZrF4-BaF2-LaF3-Al F3-NaF (ZBLAN) is described in this paper.
About: This article is published in Optik.The article was published on 2019-05-01. It has received 9 citations till now. The article focuses on the topics: Birefringence & ZBLAN.
Citations
More filters
TL;DR: By utilizing a full vectorial finite element method with perfectly matched layers, propagation properties such as birefringence, chromatic dispersion and confinement losses are numericaly evaluated for the proposed PCF structure.
Abstract: A numerical analysis of a hexagonal PCF structure with four circular air hole rings around the core has been presented in this paper. By utilizing a full vectorial finite element method with perfectly matched layers, propagation properties such as birefringence, chromatic dispersion and confinement losses are numericaly evaluated for the proposed PCF structure. Specifically, birefringence of 2.018 × 10–2, nonlinear coefficients of 40.682 W−1 km−1, negative chromatic dispersion of − 47.72 ps/km.nm at 1.55 µm and − 21 to − 105 ps/km.nm at the telecommunication band of C-U have been reported.
25 citations
TL;DR: In this paper, a type of total internal reflection photonic crystal fiber (TIR-PCF) with high birefringence and multiple zero dispersion wavelengths is presented, and the optical characteristics are numerically investigated by using the full-vector finite element method.
11 citations
TL;DR: In this article, a four-ring microstructure photonic crystal fiber with a descending air hole ring cladding is presented, and numerical analysis of the structure is done using full vectorial finite element method with perfectly matched layer (PML) boundary condition.
Abstract: A four-ring microstructure photonic crystal fibre with a descending air hole ring cladding is presented. Numerical analysis of the structure is done using full vectorial finite element method with perfectly matched layer (PML) boundary condition. It is demonstrated that it is possible to achieve at 1.55 μm confinement loss of 2.767 × 10 dB/m, birefringence of 0.00346 and a nonlinear co-efficient of 41.77 km W. Also, chromatic dispersion realised suggests a tuneable zero dispersion at 0.9–1.1 μm wavelength range.
9 citations
TL;DR: In this article, a defective core photonic crystal fiber for broadband continuum generation is investigated and different geometries of fiber design are discussed to emphasize the role of a defect in the fiber characteristics.
9 citations
TL;DR: In this paper, a photonic quasi-crystal fiber (PQF) consisting of Ge20Sb15Se65 and all circular air holes exhibits high birefringence and low confinement loss.
5 citations
References
More filters
TL;DR: In this article, a metallic solid with long-range orientational order, but with icosahedral point group symmetry, which is inconsistent with lattice translations, was observed and its diffraction spots are as sharp as those of crystals but cannot be indexed to any Bravais lattice.
Abstract: We have observed a metallic solid (Al-14-at.%-Mn) with long-range orientational order, but with icosahedral point group symmetry, which is inconsistent with lattice translations. Its diffraction spots are as sharp as those of crystals but cannot be indexed to any Bravais lattice. The solid is metastable and forms from the melt by a first-order transition.
5,702 citations
TL;DR: In this paper, the waveguiding properties of a new type of low-loss optical waveguide have been reported, where the photonic crystal fiber can be engineered to support the fundamental guided mode at every wavelength within the transparency window of silica.
Abstract: We report on the waveguiding properties of a new type of low-loss optical waveguide. The photonic crystal fiber can be engineered to support only the fundamental guided mode at every wavelength within the transparency window of silica. Experimentally, a robust single mode has been observed over a wavelength range from 337nm to beyond 1550nm (restricted only by available wavelength sources). By studying the number of guided modes for fibers with different parameters and the use of an effective index model we are able to quantify the requirements for monomode operation. The requirements are independent of the scale of the fiber for sufficiently short wavelengths. Further support for the predictions of the effective index model is given by the variation of the spot size with wavelength,
411 citations
TL;DR: The characteristics of a single D-shape PCF-SPR sensor with the same structural parameters are compared with those of the dual PCFs sensor and the latter has distinct advantages concerning the spectral sensitivity, resolution, amplitude sensitivity, and figure of merits (FOM).
Abstract: Symmetrical dual D-shape photonic crystal fibers (PCFs) for surface plasmon resonance (SPR) sensing are designed and analyzed by the finite element method (FEM). The performance of the sensor is remarkably enhanced by the directional power coupling between the two fibers. We study the influence of the structural parameters on the performance of the sensor as well as the relationship between the resonance wavelengths and analyze refractive indexes between 1.36 and 1.41. An average spectral sensitivity of 14660 nm/RIU can be achieved in this sensing range and the corresponding refractive index resolution is 6.82 × 10-6 RIU. The characteristics of a single D-shape PCF-SPR sensor with the same structural parameters are compared with those of the dual PCFs sensor and the latter has distinct advantages concerning the spectral sensitivity, resolution, amplitude sensitivity, and figure of merits (FOM).
192 citations
TL;DR: In this paper, a review of the optical properties of fluoride glasses is presented, focusing on the refractive-index dispersion and multiphonon absorption of the fluorophores.
Abstract: Current research activities on optical properties of fluoride glasses are reviewed; emphasis is given to the refractive-index dispersion and multiphonon absorption. The dependence of optical properties of fluoride glasses on their chemical composition has been summarized and interpreted under consideration of fluoride glasses as ionic substances in nature. The methods for calculating optical properties of fluoride glasses have been reviewed and a new calculation system for refractive-index dispersion and multiphonon absorption of fluoride glasses is proposed.
162 citations
TL;DR: The robustness of optical properties including dispersion, confinement loss, and effective mode area in this PQF is discussed, assuming a deviation ±3% of all air holes.
Abstract: In this work, an octagonal Penrose-type photonic quasi-crystal fiber (PQF) with dual-cladding is proposed. By optimizing three geometric degrees of freedom, the PQF exhibits ultra-flattened near-zero dispersion of 0.014±0.293 ps/nm/km, ultra-low order confinement loss of 10−4 dB/km, and large effective mode area of over 16.2 μm2 in a broadband of wavelength from 1.27 to 1.67 μm, covering almost all optical communication bands. At the common communication wavelength 1.55 μm, completely opposite trends of the dispersion and the confinement loss varying with the air-filling factor in the inner cladding are demonstrated. In addition, the robustness of optical properties including dispersion, confinement loss, and effective mode area in this PQF is discussed, assuming a deviation ±3% of all air holes.
96 citations