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:
Feb. 21, 2006
Filed:
Apr. 27, 2004
Masateru Tadakuma, Tokyo, JP;
Yu Mimura, Tokyo, JP;
Misao Sakano, Tokyo, JP;
Osamu Aso, Tokyo, JP;
Takeshi Nakajima, Tokyo, JP;
Katsutoshi Takahashi, Tokyo, JP;
Masateru Tadakuma, Tokyo, JP;
Yu Mimura, Tokyo, JP;
Misao Sakano, Tokyo, JP;
Osamu Aso, Tokyo, JP;
Takeshi Nakajima, Tokyo, JP;
Katsutoshi Takahashi, Tokyo, JP;
Abstract
A method of simultaneously specifying the wavelength dispersion and nonlinear coefficient of an optical fiber. Pulsed probe light and pulsed pump light are first caused to enter an optical fiber to be measured. Then, the power oscillation of the back-scattered light of the probe light or idler light generated within the optical fiber is measured. Next, the instantaneous frequency of the measured power oscillation is obtained, and the dependency of the instantaneous frequency relative to the power oscillation of the pump light in a longitudinal direction of the optical fiber is obtained. Thereafter, a rate of change in the longitudinal direction between phase-mismatching conditions and nonlinear coefficient of the optical fiber is obtained from the dependency of the instantaneous frequency. And based on the rate of change, the longitudinal wavelength-dispersion distribution and longitudinal nonlinear-coefficient distribution of thee optical fiber are simultaneously specified.