Compensation of coherence effects in an optical spectrum analyzer

An optical technique is described which is capable of compensating the effects of imperfect spatial coherent illumination on the performance of a modified Mach-Zehnder spectrum analyzer. Methods for experimentally determining the complex mutual coherence function of the illumination using the analyz...

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Bibliographic Details
Published in:Applied optics (2004) 1981-06, Vol.20 (11), p.1951-1954
Main Authors: Ransom, P L, Gardner, C S, Atkins, Jr, W J
Format: Article
Language:English
Online Access:Get full text
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Summary:An optical technique is described which is capable of compensating the effects of imperfect spatial coherent illumination on the performance of a modified Mach-Zehnder spectrum analyzer. Methods for experimentally determining the complex mutual coherence function of the illumination using the analyzer are also described. The addition to the system of a calibrated phase shifter controlled by a minicomputer is proposed, which permits the spectral amplitude and phase to be determined automatically in real time.
ISSN:1559-128X
DOI:10.1364/AO.20.001951