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.
© 2004 Optical Society of America
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2270) Fiber optics and optical communications : Fiber characterization
(260.2030) Physical optics : Dispersion
(320.7160) Ultrafast optics : Ultrafast technology
Christophe Dorrer, "Chromatic dispersion characterization by direct instantaneous frequency measurement," Opt. Lett. 29, 204-206 (2004)