Wavelength Measurement System for Optical Fiber Communications (Classic Reprint) - Softcover

Inhaltsangabe

Excerpt from Wavelength Measurement System for Optical Fiber Communications

Kowalski et ai. [3] later developed a system which corrected for interference fringe dropouts caused by transient dye laser instabilities Missing fringes were accounted for by comparing numbers counted in an interval with 61 preceding reference interval. Fractional fringes were monitored by measuring the time separation between the first observed dye - laser fringe and the first hene reference-laser fringe. This was done with a signal 100 times faster than the fringe signal rate and the procedure repeated at the end of a scan. The setup was placed in a vacuum chamber and the uncertainty due to dispersion was reported to be with instrument precision on the order of 11108.

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