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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 28, Iss. 10 — Mar. 15, 2010
  • pp: 1547–1555

Bandwidth Improvement in Multimode Optical Fibers Via Scattering From Core Inclusions

Arash Mafi

Journal of Lightwave Technology, Vol. 28, Issue 10, pp. 1547-1555 (2010)


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Abstract

We show that a controlled intentional mode coupling induced via scattering from core inclusions can substantially improve the bandwidth of graded index multimode fibers with centerline defect. We present a comprehensive analysis of the impact of the dielectric constant, size, density, and location of micrometer size inclusions on the bandwidth and attenuation of these fibers. We show that using a proper design, the bandwidth of a 1-km-long fiber can improve from 693-MHz to more than 2.5-GHz with less than 1-dB additional power loss. We also show that in practice, it is possible to obtain the desired level of mode coupling by exposing the photosensitive core of the fiber to a UV laser, therefore creating the micrometer size inclusions after the draw process.

© 2010 IEEE

Citation
Arash Mafi, "Bandwidth Improvement in Multimode Optical Fibers Via Scattering From Core Inclusions," J. Lightwave Technol. 28, 1547-1555 (2010)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-28-10-1547


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