Details

Autor(en) / Beteiligte

• Wieser, Wolfgang
• Biedermann, Benjamin R
• Klein, Thomas
• Eigenwillig, Christoph M
• Huber, Robert

Titel

Ultra-rapid dispersion measurement in optical fibers

Ist Teil von

• Optics express, 2009-12, Vol.17 (25), p.22871-22878

Ort / Verlag

United States

Erscheinungsjahr

2009

Quelle

Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals

Beschreibungen/Notizen

• 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 10micros for individual wavelength-resolved traces Deltat(lambda) 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.