Chirped rectilinear core longitudinally-graded optical fibers

A. Evert, T. Hawkins, R. Stolen, P. Dragic, R. Rice, J. Ballato

Research output: Contribution to journalArticlepeer-review


Reported here is a straight-forward and flexible method to fabricate silica optical fibers of circular cladding cross-section and rectilinear cores whose aspect ratio and -refractive index profile changes with position along the fiber in a deterministic way. Specifically, a modification to the process recently developed to produce longitudinally-graded optical fibers, LGFs [Opt. Express 20 (2012) 17394-17402], was employed. Herein reported are MCVD-derived germanosilicate fibers with rectangular cores where the aspect ratio changes by nearly 200% and the average -refractive index changed by about 5%. Fiber losses were measured to be about 50 dB/km. Such rectangular core fibers are useful for a variety of telecommunication and biomedical applications and the dimensional and optical chirp provides a deterministic way to control further the modal properties of the fiber.

Original languageEnglish (US)
Pages (from-to)432-436
Number of pages5
JournalOptical Fiber Technology
Issue number5
StatePublished - Oct 2013


  • Rectangular core optical fiber
  • SBS suppression
  • Specialty optical fiber

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Control and Systems Engineering
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Electrical and Electronic Engineering


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