Analysis of single-mode optical Y-junction by the boundedstep and bend approximation |
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Authors: | Tsutsumi K. Imada Y. Hirai H. Yuba Y. |
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Affiliation: | Dept. of Electron., Kyoto Inst. of Technol.; |
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Abstract: | An approximate method for analyzing planar optical Y-junctions is presented. The junction structure is replaced by a discrete succession of bounded waveguide segments, and the presence of waveguide bends is assumed. Using this approximation, single-mode symmetrical Y-junctions operated as power dividers are investigated numerically. It is shown that strong mode conversion occurs between the guided and radiation modes of the local normal mode. A perturbation analysis shows that reflected fields are negligible. Reliable values of the transmitted power are obtained |
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