Variable attenuation signal acquisition probing and voltage...

Details Variable attenuation signal acquisition probing and voltage... Variable attenuation signal acquisition probing and voltage...

2008-09-09

2008-09-09

Pak, Sung (Department: 2874)

Optical waveguides

Optical waveguide sensor

Reexamination Certificate

active

11681709

ABSTRACT:
A variable attenuation signal acquisition probing system and voltage measurement system uses an optical cavity to acquire a signal under test. The probing system has an optical transmitter and receiver that are coupled to the optical cavity via an optical transmission system. The optical cavity has an electrode structure having apertures formed in the optical cavity that are parallel to propagation path of the optical signal within the cavity. A modulated optical signal is generated by the optical cavity in response to the signal under test creating an electro-magnetic field distribution in electro-optic material in the optical cavity that overlaps the optical path of the optical signal propagating in the optical cavity which varies the index of refraction of electro-optic material in the optical path. Changes in the polarization state of the optical signal attenuates the magnitude of the output electrical signal of the optical receiver.

REFERENCES:
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patent: 6226424 (2001-05-01), Ball et al.
patent: 6246815 (2001-06-01), Fujiwara et al.
patent: 6288530 (2001-09-01), Tsuru et al.
patent: 7049843 (2006-05-01), Yakymyshyn et al.
patent: 7310455 (2007-12-01), Yakymyshyn et al.

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