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:
Mar. 28, 1989
Filed:
Nov. 12, 1987
Applicant:
Inventors:
Frank H Levinson, Redwood City, CA (US);
Steve Lavelle, San Francisco, CA (US);
Thomas E Giles, Union City, CA (US);
Joseph Zucker, Foster City, CA (US);
Bruce D Campbell, Portola Valley, CA (US);
Assignee:
Raychem Corp., Menlo Park, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; G02F / ;
U.S. Cl.
CPC ...
350 9616 ; 350 9615 ; 350 9620 ; 350311 ; 455600 ; 455617 ; 455612 ;
Abstract
A mode filter for reducing a dynamic range of a write optical fiber bus which utilizes taps which initially inject optical signals into an optical fiber which have intensities skewed towards higher order modes rather than lower order modes as compared to equilibrium for the fiber functions to preferentially attenuate outermost modes rather than lowermost modes in the fiber so as to reduce a required dynamic range for an optical receiver.