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"Ultra-rapid dispersion measurement
in optical fibers" Wolfgang Wieser, Benjamin R. Biedermann, Thomas Klein, Christoph M. Eigenwillig, Robert HuberOptics Express 17, 22871-22878 (2009) Abstract: We present a novel method to measure the chromatic dispersion of fibers with lengths of several kilometers. The technique is based on a rapidly swept Fourier domain mode locked laser driven at 50kHz repetition rate. Amplitude modulation with 400MHz and phase analysis yield the dispersion values over a 130nm continuous wavelength tuning range covering C and L band. The high acquisition speed of 10µs for individual wavelength-resolved traces Δt(λ) can reduce effects caused by thermal drift and acoustic vibrations. It enables real-time monitoring with update rates >100Hz even when averaging several hundred acquisitions for improved accuracy. BMO authors (in alphabetic order): Benjamin Biedermann Christoph Eigenwillig Robert Huber Thomas Klein Wolfgang Wieser Assoziierte Projekte: Optical Coherent Ranging and Optical Coherence Tomography (OCT): Imaging and profilometry with rapidly frequency swept laser sources Fourier Domain Mode Locking (FDML): Spectral mode locking in optics and applications  WWW-Version |