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Applied Optics

Applied Optics


  • Vol. 45, Iss. 26 — Sep. 10, 2006
  • pp: 6718–6722

Characterization of chromatic dispersion of optical filters by high-stability real-time spectral interferometry

Kensuke Ogawa  »View Author Affiliations

Applied Optics, Vol. 45, Issue 26, pp. 6718-6722 (2006)

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Chromatic dispersion of optical filters is characterized by what is believed to be novel broadband spectral interferometry, which is based on dual-wavelength heterodyne measurement of spectral phase. High phase stability is achieved by differential phase detection using two lasers for wavelength-swept probe and phase-tracking reference. The technique provides self-tracking interferometry by passive stabilization of optical phase and allows real-time measurement of spectral phase and group delay with a low phase drift of less than 0.04π. A fiber Bragg grating and a thin-film filter are characterized by this method.

© 2006 Optical Society of America

OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(260.2030) Physical optics : Dispersion
(300.6310) Spectroscopy : Spectroscopy, heterodyne

Original Manuscript: February 9, 2006
Manuscript Accepted: April 16, 2006

Kensuke Ogawa, "Characterization of chromatic dispersion of optical filters by high-stability real-time spectral interferometry," Appl. Opt. 45, 6718-6722 (2006)

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