Modal noise investigation in multimode polymer waveguides

Joseph Beals IV, Nikos Bamiedakis, Richard V. Penty, Ian H. White, Jon V. DeGroot, Terry V. Clapp

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding

5 Citations (SciVal)


In this work the recent interest in waveguides for use in short optical links has motivated a study of the modal noise dependence on launch conditions in short-reach step-index multimode polymer waveguides. Short optical links, especially those with several connection interfaces and utilising a restricted launch are likely to be subject to a modal noise power penalty. We therefore experimentally study the modal noise impact of restricted launches for a short-reach optical link employing a 50 × 50 μm polymer multimode waveguide. Lens launches resulting in small diameter input spots are investigated as are restricted launches from an 8 μm core optical fibre. For a launch spot of 10 μm diameter no impairment is observed for up to 9 dBo of mode selective loss, and for a fibre launch with a dynamic input movement of 6 μm no impairment is seen for up to 8 dBo of mode selective loss.

Original languageEnglish
Title of host publicationPassive Components and Fiber-based Devices IV
Publication statusPublished - 1 Dec 2007
EventPassive Components and Fiber-based Devices IV - Wuhan, China
Duration: 2 Nov 20075 Nov 2007

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferencePassive Components and Fiber-based Devices IV


  • Modal noise
  • Optical interconnects
  • Polymer waveguides
  • Restricted launch
  • Speckle pattern

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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