Misalignment-insensitive SNR with ballpoint-pen interconnect of GI POF

A. Inoue, Yasuhiro Koike

Research output: Chapter in Book/Report/Conference proceedingConference contribution


It is demonstrated that ballpoint-pen interconnect of graded-index plastic optical fibers (GI POFs) can allow for higher SNR for fiber-axis misalignment which cannot be tolerated for conventional butt-coupling of glass multimode fiber (MMF). In an MMF link with a vertical surface emitting laser, we evaluated coupling loss and relative intensity noise for ball-lens-coupled GI POFs which was developed with ballpoint-pen technology. The results show that the ball-lens coupling can significantly reduce coupling loss and transmission noise induced by fiber misalignment through expansion and collimation of output beam with ball lens. These properties of the ballpoint-pen interconnect can reduce required lanes using multilevel modulation scheme without additional noise-suppression components, paving the way for thinner 4K/8K interfaces for consumer applications.

Original languageEnglish
Title of host publication24th International Conference on Plastic Optical Fibers, POF 2015 - Conference Proceedings
PublisherInternational Conference on Plastic Optical Fibers
Number of pages4
Publication statusPublished - 2015
Event24th International Conference on Plastic Optical Fibers, POF 2015 - Nuremberg, Germany
Duration: 2015 Sept 222015 Sept 24


Other24th International Conference on Plastic Optical Fibers, POF 2015


  • Ballpoint-pen interconnect
  • Modal noise
  • Reflection noise

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Polymers and Plastics


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