Abstract

AbstractWe propose an experimental realization of flat‐top filters by fabricating fiber Bragg gratings in graded‐index multimode fibers (GI‐MMF). Two types of GI‐MMFs were used to make this kind of filters, and their spectra and polarization properties were experimentally investigated. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 841–843, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22286

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