Prediction of Macrobending and Splice Losses for Photonic Crystal Fibers based on the Effective Index Method

Details Prediction of Macrobending and Splice Losses for Photonic Crystal Fibers based on the Effective Index Method Prediction of Macrobending and Splice Losses for Photonic Crystal Fibers based on the Effective Index Method

2007-05-20

arxiv.org/abs/0705.2875v1

WSEAS TRANSACTIONS ON COMMUNICATIONS Issue 8, Vol. 5, 2006, pp. 1314-1321

Physics

Condensed Matter

Materials Science

8 pages, 10 figures

Scientific paper

An index-guiding photonic crystal fiber (PCF) with an array of air holes surrounding the silica core region has special characteristics compared to conventional single-mode fibers (SMFs). Using the effective index method and the Gaussian beam propagation theory, the macro-bending and splice losses for PCFs are investigated. The wavelength dependence of the cladding index of the PCF has been taken properly into account. We obtain the effective spot size for different configurations of PCFs, which is used for computing the splice losses. The Gaussian approximation for the fundamental modal field leads to simple closed-form expressions for the splice losses produced by transverse, longitudinal and angular offsets. Calculations of macro-bending losses are based on antenna theory for bend standard fibers.

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