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:
Sep. 02, 2003
Filed:
Oct. 07, 2002
Alex Fayer, Herzelia, IL;
Serge Steinblatt, Raanana, IL;
LaserComm, Inc., Plano, TX (US);
Abstract
A method of measuring dispersion in an optical fiber from one end is disclosed. An optical measurement signal comprising timed pulses is input into one end of the fiber, and a small loop is formed at the point to which total dispersion is to be measured. In one embodiment the loop is formed so as to increase the amount of detectable light that escapes the fiber at the loop, and the escaping light pulses are monitored by a free space detector. The wavelength of the optical measurement signal is varied, and the change in propagation delay of the detected optical pulses is measured, thus indicating the dispersion. In a second embodiment the loop is formed so as to increase the amount of loss in the optical measurement signal, and an OTDR is utilized.