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Related Experiment Video

Updated: Jun 10, 2026

Synthesis of Soft Polysiloxane-urea Elastomers for Intraocular Lens Application
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Design for reliability of polysiloxane-based electrical-optical circuit boards.

Dengke Cai1, Andreas Neyer

  • 1Technische Universität Dortmund, Fakultät für Elektrotechnik und Informationstechnik, Arbeitsgebiet Mikrostrukturtechnik (AG MST), D-44227 Dortmund, Germany. dengke.cai@tu-dortmund.de

Applied Optics
|July 22, 2010
PubMed
Summary

Polysiloxane-based electrical-optical circuit boards (EOCBs) demonstrate excellent mechanical and optical stability under extreme conditions. These reliable EOCBs achieve a predicted failure rate of 400 FITs, ensuring long-term performance in telecommunications.

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Area of Science:

  • Materials Science
  • Optical Engineering
  • Reliability Engineering

Background:

  • Electrical-optical circuit boards (EOCBs) are crucial for telecommunications.
  • Assessing the environmental stability of polysiloxane-based EOCBs is essential for reliable deployment.
  • Existing standards from Telcordia and IPC/IEC provide a framework for testing.

Purpose of the Study:

  • To verify the environmental stability of polysiloxane-based EOCBs.
  • To determine acceleration factors for reliability testing.
  • To predict the long-term failure rate of EOCBs.

Main Methods:

  • Conducted three environmental stability verification tests based on established standards.
  • Determined acceleration factors using defined test models.
  • Calculated required sample sizes for mechanical and optical stability verification.
  • Prepared and tested EOCB samples under various environmental conditions.

Main Results:

  • EOCBs exhibited good mechanical stability.
  • Packaged EOCBs demonstrated low and stable optical loss (<0.1 dB/cm) and numerical aperture.
  • Performance remained consistent even under extreme environmental conditions.

Conclusions:

  • Polysiloxane-based EOCBs meet stringent reliability objectives.
  • A predicted failure rate of 400 FITs was established for 14.4 years of operation.
  • EOCBs are suitable for demanding telecommunications applications requiring high stability.