Abstract

We demonstrate the operation of an in-fiber electric field sensor. The sensor is fabricated with selective chemical etching of the core of a D-shaped optical fiber followed by the deposition of an electro-optic polymer (PMMA∕DR1), which forms a hybrid core. The device demonstrates electromagnetic field sensitivity less than 100V/m at a frequency of 2.9  GHz. Eπ is estimated to be 60MV/m with an insertion loss of 14.4  dB.

© 2007 Optical Society of America

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