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20 November 2008 Large mode area photonic crystal fibers with high geometrical birefringence
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Proceedings Volume 7141, 16th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics; 71411M (2008) https://doi.org/10.1117/12.822403
Event: 16th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 2008, Polanica Zdroj, Poland
Abstract
We present the results of numerical analysis showing that high geometrical birefringence can be obtained in large mode area photonic crystal fibers. Simulations were carried out using Finite Element Method with Perfectly Matched Layer boundary conditions. To induce possibly high phase modal birefringence, we introduced a few small holes into the central region of the core, which breaks its hexagonal symmetry. Such modification of the fiber geometry is additionally responsible for increasing the effective area of the guided mode. For the optimized fiber design with a pitch distance Λ = 8.8 μm, the phase birefringence reaches B = 1.0×10-4 at wavelength λ = 1.3 μm and B = 1.5×10-4 at λ = 1.5 μm. In addition to high modal birefringence, an important advantage of the proposed fiber design is a single mode operation for wavelength greater than 1.3 μm.
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Grzegorz Golojuch and Waclaw Urbańczyk "Large mode area photonic crystal fibers with high geometrical birefringence", Proc. SPIE 7141, 16th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 71411M (20 November 2008); https://doi.org/10.1117/12.822403
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