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Large number of waveguide crossovers have a significant effect on the optical switching circuit since it accelerated insertion loss and crosstalk. In this paper, a three dimensional (3D) bending silic...a waveguide is proposed to reduce the number of crossings. The structure consists of four bending waveguides to facilitate four input-output path. Doped silica is chosen as the core material, and 1% refractive index difference is provided between core and cladding. Values for bending radiuses and spacing between cores were selected based on simulation results. In-detail analysis of the presented device was done by a 3D beam propagation method (BPM) to investigate the light propagation and to estimate the crosstalk. Here, the concept of the designed device is discussed thoroughly as well as the simulation result is presented. As a result, nearly 100% of inserting light at the output of each waveguide and approximately -80dB of crosstalk were achieved successfully.続きを見る
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Mendeley出力
