The impact of elliptical deformations for optimizing the performance of dual-core fluorine-doped photonic crystal fiber couplers
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概要
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In this paper we study the impact of elliptically-deformed features such as cladding air-holes and elliptically-modulated cores, as ingredients for optimizing the coupling characteristics of dual-core fluorine-doped photonic crystal fiber (PCF) couplers. We provide a detailed numerical investigation by using a trial and error approach for optimizing the propagation characteristics of fluorine-doped PCF couplers. Typical characteristics of the newly proposed PCF coupler structure are: wavelength-flattened coupling characteristics between 0.7 μm and 1.6 μm wavelength range, coupling efficiency of 50±1 % from 0.9 μm to 1.6 μm, and a reasonably small coupling length of 1.3 cm. In addition we have elaborately derived the design parameters so that our proposed dual-core PCF coupler exhibits polarization-insensitive characteristics verified by using a full-vectorial beam propagation method. The proposed dual-core PCF can be effectively used as a 3-dB coupler, over a wide wavelength range.
- Optical Society of Americaの論文
- 2006-03-06
著者
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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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Florous Nikolaos
Graduate School Of Information Science And Technology Hokkaido University
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