Optical low-coherence reflectometry using a Gaussian bandpass filter for measuring WDM components

Abstract

We report that a tunable narrow-band light source using a Gaussian bandpass filter is indispensable for measuring the return loss of a wavelength-division-multiplexing component with an optical low coherence reflectometer. We used an arrayed-waveguide grating (AWG) to construct a 0.4 nm-wide Gaussian bandpass filter and successfully measured the reflection… (More)

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