Compensation of simple fibre optic Faraday effect sensors

Details Compensation of simple fibre optic Faraday effect sensors Compensation of simple fibre optic Faraday effect sensors

2006-06-27

2006-06-27

Karlsen, Ernest (Department: 2829)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Using radiant energy

C324S11700H, C359S281000

Reexamination Certificate

active

07068025

ABSTRACT:
An electric current measurement device includes a housing defining first and second open ends sealed by first and second sealing means, respectively; a first optical fibre received in an aperture in the first sealing means and in optical communication with a first optical lens in the housing; a first polarisation filter in the housing in optical communication with the first lens; a magneto-optical rod within the housing in optical communication with the first polarisation filter; a second polarisation filter in the housing in optical communication with the rod; and a second optical lens in the housing in optical communication with the second polarisation filter. The second sealing means has an aperture for receiving a second optical fibre fixed to the second lens. First and second lids, attachable to the first and second housing ends, respectively, include apertures for receiving the first and second optical fibres, respectively.

REFERENCES:
patent: 3980949 (1976-09-01), Feldtkeller
patent: 4683421 (1987-07-01), Miller et al.
patent: 4947107 (1990-08-01), Doerfler et al.
patent: 5451863 (1995-09-01), Freeman
patent: 6630819 (2003-10-01), Lanagan et al.

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