At&t Bell Laboratories

Heidi M Gordon

William R Holland

Hung C Ling

Urmi Ray

Gary L Wolk

Iris Artaki

The accuracy of detection of the quantity of a rosin flux residue (18) left on an electronic assembly (11) after a cleaning operation is improved by using gel permeation chromatography for such detection.

Analytic method for use in electronic circuit assembly operations

An optical waveguide circuit including a nonlinear optical device comprises a metal ground plane (21), a polymer core layer (25) in which optical waves are propagated, and polymer clad layers (22 and 26) on opposite sides of the core layer. The waveguide paths are defined by troughs (23) in one of the clad layers. The nonlinear device is made by electrooptically poling part of the core layer which contains a nonlinear moiety. The clad layers (26 and 22) have a significantly higher conductivity than that of the core layer (25) which improves the efficiency of the electrooptic poling.

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Willingboro, NJ, United States of America

Heidi M Gordon