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Si-photonics based passive device packaging and module performance.

Jeong Hwan Song1, Jing Zhang, Huijuan Zhang

  • 1Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research), Singapore. jeonghwan.song@gmail.com

Optics Express
|September 22, 2011
PubMed
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We developed a packaged silicon ring-resonator tunable filter. This device uses polarization diversity and YAG laser welding, achieving low packaging loss for reliable optical performance.

Area of Science:

  • Photonics and Optical Engineering
  • Materials Science and Engineering
  • Integrated Optics

Background:

  • Silicon photonics enables advanced optical devices.
  • Ring-resonator filters offer tunable wavelength selectivity.
  • Packaging is critical for device performance and reliability.

Purpose of the Study:

  • To present a fully packaged silicon passive waveguide device for a tunable filter.
  • To demonstrate the effectiveness of polarization diversity circuits.
  • To detail the YAG laser welding technique for fiber pigtailing and mechanical fine-tuning for packaging.

Main Methods:

  • Design and fabrication of a silicon ring-resonator tunable filter.
  • Integration of polarization diversity circuits.

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Last Updated: May 29, 2026

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  • Application of YAG laser welding for fiber optic coupling.
  • Utilizing mechanical fine-tuning with a seesaw effect for misalignment compensation.

    • Main Results:

    • Achieved packaging loss below 1.5 dB compared to chip measurements.
    • Successfully compensated post-welding misalignment using mechanical fine-tuning.
    • Demonstrated the functionality of the packaged tunable filter with polarization diversity.

    Conclusions:

    • The developed packaging process ensures high performance for silicon ring-resonator tunable filters.
    • YAG laser welding and mechanical fine-tuning are effective for robust fiber pigtailing.
    • The device shows potential for various optical communication and sensing applications.