Electroluminescent optical fiber shock sensor

Details Electroluminescent optical fiber shock sensor Electroluminescent optical fiber shock sensor

1989-08-10

1991-02-05

Jordan, Charles T.

Communications, electrical: acoustic wave systems and devices

Signal transducers

367157, 310340, 381172, H04R 1700

Patent

active

049911503

ABSTRACT:
A piezoelectric or ferroelectric stress sensing material in intimate electrical communication with an electroluminescent material produces light at an amplitude dependent on the stress applied to the stress sensing material. The light signal is transmitted from the electroluminescent material by fiber optic cable to an optical signal detector. In the preferred embodiments the electroluminescent material comprises a light emitting diode as a small electrical short circuit load across two otherwise insulated faces of a piezoelectric or ferroelectric element. The embodiments include a composite stress sensing and electroluminescent material, separate stress sensing and electroluminescent materials joined by conductive film, foil or wire and additional means to bias, amplify and control the optical signal produced by the electroluminescent material and transmitted by the fiber optic cable.

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