Polymer Spot Size Expanders for High Efficiency Optical Coupling in Optical Interconnection

Authors

  • Yoshiki Kamiura Tokai University
  • Taiga Kurisawa Tokai University
  • Chiemi Fujikawa Tokai University
  • Osamu Mikami Universiti Teknologi Malaysia

DOI:

https://doi.org/10.4302/plp.v14i3.1163

Keywords:

Coupling Efficiency, optical Interconnection, silicon photonics, UV-curable resin, microlens, spot size expander, pillar, self-written waveguide

Abstract

Improving the low coupling efficiency due to spot size differences between silicon photonics chips and single mode fibers remains a challenge for achieving high bit-rate optical interconnections. To solve this problem, the test spot size expander device is fabricated using UV-curable resin on the end face of a fiber with a high numerical aperture having a similar spot size of silicon chips. The expanded spot size of 9.38 μm from the original 3.2 μm at a wavelength of 1.55 μm and the maximum coupling efficiency with a single mode fiber of –1.19 dB is achieved. In addition, the –3 dB tolerance of the coupling efficiency along the vertical optical axis was ±4.1 µm.

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Author Biographies

Yoshiki Kamiura, Tokai University

Course of Electrical and Electronic Engineering, Graduate School of Engineering

Taiga Kurisawa, Tokai University

Course of Electrical and Electronic Engineering, Graduate School of Engineering

Chiemi Fujikawa, Tokai University

Course of Electrical and Electronic Engineering, Graduate School of Engineering

Osamu Mikami, Universiti Teknologi Malaysia

Malaysia-Japan International Institute of Technology

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Published

2022-09-30

How to Cite

[1]
Y. Kamiura, T. Kurisawa, C. Fujikawa, and O. Mikami, “Polymer Spot Size Expanders for High Efficiency Optical Coupling in Optical Interconnection”, Photonics Lett. Pol., vol. 14, no. 3, pp. 62–64, Sep. 2022.

Issue

Vol. 14 No. 3 (2022)

Section

Articles

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