On the basis of space–time duality, we propose experimental setups to implement the cross-ambiguity function optically in space and time in one and two dimensions. In space the cross-ambiguity is shown to be related to the coupling efficiency between butt-joined optical waveguides. In time it is related to the spectrogram or the frequency-resolved optical gating techniques for the characterization of optical pulses.
© 1999 Optical Society of America
(060.2310) Fiber optics and optical communications : Fiber optics
(070.1060) Fourier optics and signal processing : Acousto-optical signal processing
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(120.4820) Instrumentation, measurement, and metrology : Optical systems
Daniela Dragoman, Mircea Dragoman, and Jean-Pierre Meunier, "Implementation of the Spatial and the Temporal Cross-Ambiguity Function for Waveguide Fields and Optical Pulses," Appl. Opt. 38, 822-827 (1999)