J. Brendel et al., MEASUREMENT OF CHROMATIC DISPERSION IN OPTICAL FIBERS USING PAIRS OF CORRELATED PHOTONS, Optics communications, 151(1-3), 1998, pp. 35-39
Photon pairs generated by spontaneous parametric downconversion are us
ed to implement a novel technique for measuring the chromatic dispersi
on of optical fibers. The time and energy correlation of the photons o
f a pair allow a measurement with a high time resolution which is only
limited by the detection electronics. The device gives direct access
to the differential group delays at several wavelengths around 1.3 mu
m Our prototype setup is capable of measuring group delay differences
with a resolution of about 5 ps, only limited by the upper delay limit
of the time interval analyzer (presently 50 ns). (C) 1998 Elsevier Sc
ience B.V. All rights reserved.