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:
Nov. 21, 1989
Filed:
May. 24, 1988
Applicant:
Inventor:
Eleanor J Tarbox, Southampton, GB;
Assignee:
Pirelli General plc, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; C03C / ;
U.S. Cl.
CPC ...
350 9621 ; 350 9610 ; 350 9620 ; 350 9629 ; 350 9634 ; 350320 ; 65-312 ; 65-41 ; 65-42 ;
Abstract
An attenuating device 10 for use with signal carrying optical fibres 14 comprises a length 18 of optical fibre coiled within a casing 16. The optical fibre length 18 is of higher attenuation per unit length than the optical fibres 14 and the device comprises means, for example optical fibre tails 22,24 fusion spliced at 20,22 to the opposite ends of the length 18 for optically connecting those ends to the fibres 14.