Measurement of modal dispersion in optical fiber by means of acousto-optic coupling

We show that frequency-wavelength tuning characteristics of acousto-optic coupling can be used for measuring the difference of effective index, group index, and chromatic dispersion between core and cladding modes in single-mode fibers. Chromatic dispersion measurements of a 30-cm-long conventional...

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Bibliographic Details
Published in:Optics letters 2003-01, Vol.28 (2), p.75-77
Main Authors: Li, Qun, Dashti, Pedram Zare, Tomov, I V, Lee, H P
Format: Article
Language:English
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Summary:We show that frequency-wavelength tuning characteristics of acousto-optic coupling can be used for measuring the difference of effective index, group index, and chromatic dispersion between core and cladding modes in single-mode fibers. Chromatic dispersion measurements of a 30-cm-long conventional single-mode fiber, a nonzero dispersion-shifted fiber, and a dispersion-compensating fiber with this new method are presented for the wavelength range 1500-1600 nm. Qualitative agreement with independently measured data is obtained.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.28.000075