Multiple-mode reconfigurable electro-optic switching network for optical fiber sensor array

Ray T. Chen, Michael R. Wang, Tomasz Jannson

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


We report the first switching network compatible with multi-mode fibers. A 1-to-many cascaded reconfigurable interconnection was built. A thin glass substrate was used as the guiding medium which provides not only higher coupling efficiency from multi-mode fiber to waveguide but also better tolerance of phase matching conditions. Involvement of a total internal reflection (TIR) hologram and multi-mode waveguide eliminates interface problems between fibers and waveguides. The DCG polymer graft has proven to be reliable from -180°C to +200°C. Survivability of such an electro-optic system in harsh enviroments is further ensured. LiNbO3 was chosen as the E-O material because of its stability at high temperatures (phase transition temperature >1000°C) and maturity of E-O device technology. Further theoretical calculation was conducted to provide the optimal interaction length and device capacitance.

Original languageEnglish (US)
Pages (from-to)223-236
Number of pages14
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - Jan 1 1991
Externally publishedYes
EventIntegrated Optics and Optoelectronics II - San Jose, CA, USA
Duration: Sep 17 1990Sep 19 1990

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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