Wavelength dependence of stress-induced time of flight variations in graded-index multimode fibers

N. Kashima, T. Kawashima, S. Miyauchi

Research output: Contribution to journalArticle

Abstract

We investigate the wavelength dependence of stress-induced time of flight variations in graded-index multimode fibers (GI-MMFs) for wavelength λ = 1.26 μm ∼1.58 μm, theoretically and experimentally. Calculations were made based on simple equations using the refractive index of silica fibers. We measured the wavelength dependence of stress-induced time of flight variations by a newly proposed measurement method. We confirmed the similar wavelength dependence of GI-MMFs to that for standard single mode fibers (SSMF). However, the value of them is different. We compare the experimental and theoretical results for two types of fibers. The comparison indicates that the difference of stress-induced time of flight variations between two types of fibers is mainly due to the group velocity difference. We conclude that there is no significant difference of the photo-elastic constant between the measured SSMFs and GI-MMFs. Although many properties of GI-MMFs depended on the mode power distribution in general, we conclude the dependence of stress-induced time of flight variations on mode power distribution is small for the measured fibers.

Original languageEnglish
Pages (from-to)7-12
Number of pages6
JournalOptical Fiber Technology
Volume25
DOIs
Publication statusPublished - 2015 Oct 1

Fingerprint

Multimode fibers
Wavelength
Fibers
Elastic constants
Single mode fibers
Silicon Dioxide
Refractive index
Silica

Keywords

  • Graded-index multimode fiber
  • Stress-induced time of flight variations
  • Wavelength dependence

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Wavelength dependence of stress-induced time of flight variations in graded-index multimode fibers. / Kashima, N.; Kawashima, T.; Miyauchi, S.

In: Optical Fiber Technology, Vol. 25, 01.10.2015, p. 7-12.

Research output: Contribution to journalArticle

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N2 - We investigate the wavelength dependence of stress-induced time of flight variations in graded-index multimode fibers (GI-MMFs) for wavelength λ = 1.26 μm ∼1.58 μm, theoretically and experimentally. Calculations were made based on simple equations using the refractive index of silica fibers. We measured the wavelength dependence of stress-induced time of flight variations by a newly proposed measurement method. We confirmed the similar wavelength dependence of GI-MMFs to that for standard single mode fibers (SSMF). However, the value of them is different. We compare the experimental and theoretical results for two types of fibers. The comparison indicates that the difference of stress-induced time of flight variations between two types of fibers is mainly due to the group velocity difference. We conclude that there is no significant difference of the photo-elastic constant between the measured SSMFs and GI-MMFs. Although many properties of GI-MMFs depended on the mode power distribution in general, we conclude the dependence of stress-induced time of flight variations on mode power distribution is small for the measured fibers.

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