Method and apparatus for OFDR-based electrophoresis
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United States of America Patent
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Jan 26, 2016
Grant Date -
Oct 9, 2014
app pub date -
Nov 5, 2012
filing date -
Nov 16, 2011
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Abstract
An optical interrogation system, e.g., an OFDR-based system, measures local changes of index of refraction of a medium contained within a light guiding tube and includes an optical interferometric interrogator, optical detection circuitry, and a data processor. The data processor initiates a sweep of the light source and guide light from an interrogating light source into a medium contained by a tube which restricts movement of particles provided into the tube, where the medium is subjected to a driving force that overcomes resistance to movement of particles through the medium in the tube. The optical interferometric interrogator provides an optical interference pattern associated with a group of particles having moved in the tube as a result of the driving force. Based on the optical interference pattern, the data processor identifies a current location of the group of particles in the tube.
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