Chromatic dispersion characterization by direct instantaneous frequency measurement.
A new concept for the measurement of chromatic dispersion is presented. The group delay of the device under test is directly obtained from the instantaneous frequency of a short optical pulse after propagation in the device, itself obtained with temporal and spectral interferometry. Temporal and spectral fringe encoding provide excellent accuracy and resistance to noise, and a wide variety of dispersions can be characterized even at high insertion losses.
Dorrer
Christophe
C
Bell Laboratories-Lucent Technologies, 101 Crawfords Corner Road, Holmdel, New Jersey 07733, USA. dorrer@lucent.com