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Rapid, cost-effective measurement of chromatic dispersion of optical fibre over 1440-1625 nm using Sagnac interferometer

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1 Author(s)
Abedin, K.S. ; Ultrafast Photonic Network Group, Nat. Inst. of Inf. & Commun. Technol., Tokyo, Japan

A technique for rapid, cost-effective measurement and monitoring of the chromatic dispersion of optical fibre using a Sagnac interferometer is reported. The interferometer incorporates an asymmetrically driven phase modulator and a novel optoelectronic feedback circuit. The chromatic dispersion of a 1 km-long singlemode fibre was measured over the range of 1440-1625 nm in less than 30 s.

Published in:

Electronics Letters  (Volume:41 ,  Issue: 8 )