Abstract

The directional coupler is one of the most important devices in the field of integrated optics, from which some other optical devices such as polarization splitters and reflectors are derived. In this paper, we present an autodesign method of the structures of the polarization splitters and reflectors based on beam propagation method and golden section method, which can decrease the amount of computation greatly. Using this method,we analyze and discuss the influence of Ti-diffusion conditions on the structural optimization of polarization splitters and reflectors quantificationally. In addition, we have fabricated a series of polarization splitters and the experimental results are well consistent with theoretical analysis.

[IEEE ]

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