Fourier-domain low-coherence interferometry for differential mode delay analysis of an optical fiber

Ji Yong Lee, Tae Jung Ahn, Sucbei Moon, Young Chan Youk, Yong Min Jung, Kyunghwan Oh, Dug Young Kim

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

We propose a novel mode analysis and differential mode delay measurement method for an optical fiber using Fourier-domain low-coherence interferometry. A spectral interferometer based on a Mach-Zehnder interferometer setup was used with a broadband source and an optical spectrum analyzer to detect relative temporal delays between the guided modes of a few-mode optical fiber by analyzing spectral interference signals. We have shown that experimental results of the proposed method agree well with those results obtained by using a conventional time-domain measurement method. We have demonstrated that this new mode analysis technique has high sensitivity (<60 dB) and very good resolution (<1 ps/m).

Original languageEnglish
Pages (from-to)2396-2398
Number of pages3
JournalOptics Letters
Volume31
Issue number16
DOIs
Publication statusPublished - 2006 Aug 15

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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