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Photo-Polymerized Acrylic Waveguides for Optical Interconnects

  • Robert R. Krchnavek (a1), Gail R. Lalk (a2) and Robert Denton (a3)

Abstract

We have fabricated acrylic based optical channel waveguides using proximity photolithography as well as laser direct writing. The cladding layer is a photosensitive aliphatic urethane dimethacrylate and the guiding layer is a photosensitive aromatic acrylated epoxy. This material system provides good adhesion to a variety of substrate materials. Since both the guiding and cladding layers are applied, these materials can be employed in several electrical/optical applications including multi-chip modules using Si, SiO2, and polyimide as well as high speed electronic board technologies using teflon based substrates.

Loss measurements show a guide loss of less than 0.08 dB/cm for multi-mode waveguides fabricated using the direct write laser technique. Lithographically defined guides have a loss of 0.3 dB/cm for similar size waveguides.

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References

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9. Ebercryl 4883 (cladding) and Ebercryl 600 (core), Radcure Specialties, Inc., Louisville, KY 40299.
10. Rogers Corporation, One Technology Drive, Rogers, Connecticut 06263.

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