Inter-channel crosstalk analysis for W-shaped and graded-index core polymer optical waveguides with ray tracing method

Hsiang-Han Hsu; Keishiro Shitanda; Takaaki Ishigure

doi:10.1117/12.873988

17 January 2011 Inter-channel crosstalk analysis for W-shaped and graded-index core polymer optical waveguides with ray tracing method

Hsiang-Han Hsu, Keishiro Shitanda, Takaaki Ishigure

Author Affiliations +

Proceedings Volume 7944, Optoelectronic Interconnects and Component Integration XI; 79440H (2011) https://doi.org/10.1117/12.873988
Event: SPIE OPTO, 2011, San Francisco, California, United States

Abstract

For high-density and high-speed optical interconnections using parallel polymer optical waveguides (PPOW), we theoretically and experimentally demonstrate that W-shaped refractive index profiles in the cores are capable of decreasing the inter-channel crosstalk compared to step-index (SI) and even to graded index (GI) waveguides. In this paper, first we analyze the optical characteristics of polymer waveguides with different index profiles by means of the ray tracing model with scattering effect previously we developed. The calculation results confirm the index valley surrounding each core works properly for preventing the power coupling from the cladding modes to the propagation modes. Next, we show the fabrication process (preform method) for such a waveguide, where the cladding material is composed of a copolymer of methyl methacrylate (MMA) and benzyl methacrylate (BzMA). Compared to a GI-core PPOW we previously fabricated with the same core material, the 1-m long PPOW with W-shaped refractive index profile exhibits not only a low propagation loss (0.027 dB/cm), but an even lower inter-channel crosstalk value (-32 dB).

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Hsiang-Han Hsu, Keishiro Shitanda, and Takaaki Ishigure "Inter-channel crosstalk analysis for W-shaped and graded-index core polymer optical waveguides with ray tracing method", Proc. SPIE 7944, Optoelectronic Interconnects and Component Integration XI, 79440H (17 January 2011); https://doi.org/10.1117/12.873988

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