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Response Analysis of PLC Optical Splitters Under Force Cyclic Loading.

Lianqiong Jiang1,2, Yu Zheng1, Ke Zeng1

  • 1State Key Laboratory of Precision Manufacturing for Extreme Service Performance, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China.

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|April 26, 2025
PubMed
Summary
This summary is machine-generated.

Planar lightwave circuit (PLC) optical splitters experience damage at the fiber array-chip joint under force cycling. Real-time optical monitoring reveals this weak area, crucial for improving splitter reliability.

Keywords:
PLC optical splittersadhesively bonded jointforce cyclic loadinginsertion loss

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Area of Science:

  • Optical Engineering
  • Materials Science
  • Mechanical Engineering

Background:

  • Planar lightwave circuit (PLC) optical splitters are critical components in optical networks.
  • Understanding their failure mechanisms under mechanical stress is essential for reliability.

Purpose of the Study:

  • To investigate the damage phenomenon and failure mechanisms of PLC optical splitters under force cycling.
  • To establish an online experimental platform for studying optical and mechanical responses.

Main Methods:

  • Developed an online test experimental platform for force cycling tests.
  • Monitored optical performance parameters (e.g., insertion loss) in real-time.
  • Analyzed mechanical responses and identified weak areas.

Main Results:

  • The eight-channels output fiber array-PLC chip adhesively bonded joint is the weakest area.
  • Force cycling, especially unloading, causes sudden fluctuations in insertion loss (IL).
  • Real-time optical monitoring reflects local deformation and damage in the weak area.

Conclusions:

  • Identified the critical weak area in PLC optical splitters under force cycling.
  • Demonstrated the correlation between optical performance and mechanical damage.
  • Provided insights for enhancing the long-term reliability of PLC optical splitters.