Abstract
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
Full Article | PDF ArticleMore Like This
J. Y. Lee and D. Y. Kim
Appl. Opt. 46(29) 7289-7296 (2007)
Naum K. Berger, Boris Levit, Vladimir Smulakovsky, and Baruch Fischer
Appl. Opt. 44(36) 7862-7866 (2005)
Evangelos Papastathopoulos, Klaus Körner, and Wolfgang Osten
Appl. Opt. 45(32) 8244-8252 (2006)