Title :
The optimized wavelength combinations of two broadband sources for white light interferometry
Author :
Wang, D.N. ; Ning, Y.N. ; Grattan, K.T.V. ; Palmer, A.W. ; Weir, K.
Author_Institution :
Dept. of Electr., Electron. & Inf. Eng., City Univ., London, UK
fDate :
5/1/1994 12:00:00 AM
Abstract :
Two broadband sources can be used in combination in white light interferometry to simplify the problem of central fringe identification. In this paper, a method for selecting the optimum wavelength combinations of such sources is presented. The results are obtained from a theoretical analysis and computer simulations, verified by experiment. It has been shown that the minimum signal-to-noise ratio required by the system to identify the central fringe position can be greatly reduced by using the optimum wavelength combination
Keywords :
laser modes; light interferometry; light sources; optical information processing; semiconductor lasers; broadband sources; central fringe identification; computer simulations; experiment; minimum signal-to-noise ratio; multimode laser diode light sources; optimized wavelength combinations; optimum wavelength combination; optimum wavelength combinations; theoretical analysis; white light interferometry; Computer simulation; Costs; Diode lasers; Interferometers; Light sources; Optical interferometry; Optical signal processing; Position measurement; Power generation; Wavelength measurement;
Journal_Title :
Lightwave Technology, Journal of
