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:
Dec. 03, 1985
Filed:
Aug. 31, 1983
Applicant:
Inventor:
Julian Stone, Rumson, NJ (US);
Assignee:
AT&T Bell Laboratories, Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
356 731 ;
Abstract
The dispersion in an optical fiber is determined using an intensity or optical signal envelope cross-correlation. Light from an optical source is injected into two transmission paths in which the relative delay can be varied. At least one path comprises the optical fiber whose dispersion is to be determined. Each path provides an output signal having a signal envelope. These envelopes are then cross-correlated for a number of wavelengths to provide a measurement of group delay from which the dispersion is determined.