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Numerical simulation of low loss silicon photonic wire waveguide with multiple cladding layers

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Abstract

A different silicon photonic wire waveguide is proposed, which uses multiple thin cladding layers in order to reduce the index contrast between core and cladding interface. The reduced index contrast in the proposed waveguide has led to reduction in the scattering losses by 37% as compared to silicon wire waveguide for 400 nm × 220 nm waveguide dimension. The proposed waveguide has shown significant reduction in bending losses. It offers the bending loss of 0.0118 dB at the radius of 1 μm and 0.0063 dB for a radius of 2 μm at 1.55 μm wavelength as compared to 0.086 and 0.013 dB at the radius of 1 and 2 μm, respectively, offered by silicon photonic wire waveguide at 1.5 μm wavelength. The use of polymer material as top cladding layer resulted in decreasing the sensitivity of effective index against temperature for the designed waveguide by a factor of 2 as compared to silicon wire waveguide.

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Authors and Affiliations

  1. ECE Department, PEC University of Technology, Chandigarh, India

    Jyoti Kedia & Neena Gupta

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  1. Jyoti Kedia
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  2. Neena Gupta
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Correspondence to Jyoti Kedia.

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Kedia, J., Gupta, N. Numerical simulation of low loss silicon photonic wire waveguide with multiple cladding layers. Opt Quant Electron 49, 185 (2017). https://doi.org/10.1007/s11082-017-1021-8

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