WHITE LIGHT INTERFEROMETRY and APPLICATIONS TO MEASUREMENTS AND COMMUNICATIONS

R. Coïsson,

Dipartimento di Fisica, Università di Parma, 43100 Parma, Italia.

Abstract:

''White light'' interferometry uses amplitude-division with a path difference much longer than the coherence length of the source. We recall some historical experiment illustrating the concept, and indicate some applications that have recently been developed for measurements and for multiplexing.

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• Introduction
• Stochastic functions and linear systems.
• The interferometer as an autocorrelator.
• The Fizeau experiment
• Channeled spectrum
• The experiment of Alford & Gold
• The experiment of Delisle & Cielo
• Various ways of analysing a system.
• Example: REFLECTOMETRY
• MULTIPLEXING
• Conclusion