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Proceedings Paper

Resolving new dispersion effects in interferometers and optical fibers using low-coherence spectral interferometry
Author(s): Petr Hlubina
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Paper Abstract

Low-coherence spectral interferometry can be used for dispersion characterizing two-beam interferometers or two- mode optical fibers when the spectral interference between beams or modes at the output of a dispersive interferometer or an optical fiber shows up as a periodic modulation of the source spectrum that can be processed. Thus, using the Fourier transform method in processing the measured spectral modulations, the wavelength dependences of the overall phases and then the first-order and the second-order dispersion characteristics, including the wavelength dependence of the group optical path differences (OPDs) between two beams in the dispersive interferometers or two modes in the optical fibers, can be obtained. The applications of low-coherence spectral interferometry can be extended to resolve the equalization wavelength at which the group OPD between two beams in a dispersive interferometer or two modes in an optical fiber is zero. The measurement of the equalization wavelength for the dispersive interferometer or the two-mode optical fiber, together with the measurement of the spectral dependence of the group OPD between two beams in the interferometer or two modes in the optical fiber, can be used for a compete dispersion characterizing the interferometer or the optical fiber.

Paper Details

Date Published: 29 December 1999
PDF: 6 pages
Proc. SPIE 4016, Photonics, Devices, and Systems, (29 December 1999); doi: 10.1117/12.373629
Show Author Affiliations
Petr Hlubina, Silesian Univ. at Opava (Czech Republic)

Published in SPIE Proceedings Vol. 4016:
Photonics, Devices, and Systems
Miroslav Hrabovsky; Pavel Tomanek; Miroslav Miler, Editor(s)

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