Design of effectively single-mode air-core photonic bandgap fiber with improved transmission characteristics for the realization of ultimate low loss waveguide
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概要
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In this paper, we study the novel propagation properties of an improved triangular-type air-core photonic bandgap fiber (PBGF) structured with an anti-resonant silica core surround, through a full-vector modal solver based on the finite-element method (FEM). At first, to realize a single-mode operation over a wide wavelength range, the fiber whose core is constructed by removing 1 air-hole and expanded is proposed and structurally-optimized. In particular, the structural parameters for the fiber that prevent the narrow-band transmission due to the existence of the surface modes and enhance the confinement of the power in the air-core are presented. For the realization of an ultimate low loss transmission, a 7-unit-cell PBGF is analyzed and we show that the 7-unit-cell PBGF can achieve not only lower confinement loss than that of regular-type 7-unit-cell PBGF, but also lower power fraction in the silica-ring when compared with the regular 19-unit-cell PBGF with an anti-resonant core surround, exhibiting an effectively single-mode operation.
- Optical Society of Americaの論文
- 2007-04-02
著者
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Saitoh Kunimasa
Graduate School of Information Science and Technology, Hokkaido University
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Koshiba Masanori
Graduate School Of Information Sci. And Technol. Hokkaido Univ.
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Saitoh Kunimasa
Graduate School Of Information Sci. And Technol. Hokkaido Univ.
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Saitoh Kunimasa
Division Of Media And Network Technology Graduate School Of Information Science And Technology Hokka
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Florous Nikolaos
Graduate School Of Information Science And Technology Hokkaido University
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SAITOH Kunimasa
Division of Media and Network Technologies, Hokkaido University
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