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Direct imaging of transient interference in a single-mode waveguide using near-field scanning optical microscopy

Date

2005

Authors

Lear, Kevin L., author
Dandy, David S., author
Stephens, Matthew D., author
Yuan, Guang Wei, author
IEEE, publisher

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Abstract

Near-field scanning optical microscopy was used to image transient interference between the guided mode and a leaky mode induced in a single-mode waveguide due to a localized adlayer. The observed field response in the adlayer region as well as the period and decay length of the subsequent interference are in good agreement with beam propagation calculations. The transient interference impacts the element spacing in local evanescent array coupled sensors.

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Subject

waveguide
evanescent field
leaky mode
near-field scanning optical microscopy (NSOM)
biosensor
optical interference

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