The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 07, 1990
Filed:
Apr. 12, 1989
Applicant:
Inventors:
Philip J Nash, Somerset, GB;
Christopher Lamb, Dorset, GB;
Assignee:
Plessey Overseas Limited, Ilfrd-Essex, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; G01B / ;
U.S. Cl.
CPC ...
25022711 ; 2502311 ; 356345 ;
Abstract
Many optical sensing systems include an interferometer comprising a plurality of contiguous optical fibre sensor lengths with partially reflecting discontinuities therebetween. An inherent problem with these systems is however that the number of sensors that can be configured is limited by the pulse repetition or sensor interrogation rate. In the present system the pulse repetition rate is effectively increased without having to reduce optical fibre sensor lengths or numbers by interleaving several interrogating signals.