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 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.
Li
Qun
Q
Department of Electrical and Computer Engineering, Henry Samueli School of Engineering, University of California, Irvine, Irvine, California 92697, USA.
Dashti
Pedram Zare
PZ
Tomov
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Lee
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