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:
Aug. 21, 2012
Filed:
Mar. 17, 2010
Haruyoshi Ono, Kanagawa, JP;
Isao Baba, Kanagawa, JP;
Makoto Sugiyama, Kanagawa, JP;
Sumitomo Electric Device Innovations, Inc., Yokohama, JP;
Abstract
A testing method of a semiconductor laser emitting a wavelength under a test different from a reference wavelength in a given wavelength range includes: a first step of obtaining a length of an optical fiber under the test satisfying a reference dispersion condition at the wavelength under the test, based on the reference dispersion condition for the test and a unit dispersion amount of the optical fiber; and a second step of inputting a modulation signal that is a modulated laser light of the semiconductor laser having a wavelength as the wavelength under the test into an optical fiber having substantially the same length as the length obtained in the first step and evaluating an output of the optical fiber.