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Miniaturized ferrofluid actuated single mode fiber variable optical attenuator (VOA)

By Anna Dudus̈, Robert Blue and Deepak Uttamchandani


We report a miniature variable optical attenuator employing a ferrofluid actuator/shutter combination located between lensed optical fibers. The VOA consists of an opaque, undiluted ferrofluid plug actuator inside a microfluidic channel. The ferrofluid plug position is translated by a variable magnetic field generated from a miniature electromagnet. The ferrofluid plug actuator in turn displaces a second oil-diluted ferrofluid plug acting as an optical shutter. The position of the shutter controls the optical power coupled between the input and output fibers

Topics: TK
Publisher: 'Institute of Electrical and Electronics Engineers (IEEE)'
Year: 2014
DOI identifier: 10.1109/OMN.2014.6924551
OAI identifier:

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