Abstract

We present what is to our knowledge the first design of a tunable optical filter with a flattopped passband. The filter consists of a Fabry–Perot etalon with multiple reflection gratings as dielectric mirrors. Wavelength tunability is achieved by modulation of the refractive indices of the cavity and the dielectric mirrors. Specifically, a filter with a 1-nm linewidth and a 40-nm wavelength-tuning range is designed for applications in wavelength-division-multiplexing (WDM) optical fiber communication systems. We also discuss several factors, including absorption and variations of other design parameters, that may affect the performance of the filter.

© 1999 Optical Society of America

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Corrections

Miao Yang and Claire Gu, "Flattopped tunable wavelength-division-multiplexer filter design: errata," Appl. Opt. 38, 6293-6293 (1999)
https://www.osapublishing.org/ao/abstract.cfm?uri=ao-38-30-6293

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