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:
Jan. 12, 2016
Filed:
Sep. 26, 2013
Sumitomo Osaka Cement Co., Ltd., Chiyoda-Ku, Tokyo, JP;
SUMITOMO OSAKA CEMENT CO., LTD., Chiyoda-Ku, Tokyo, JP;
Abstract
An optical modulator that includes a substratecomposed of a material having an electro-optical effect, an optical waveguideformed in the substrate, and a modulation electrodefor modulating lightwaves propagating through the optical waveguide, in which output light Lthat is output from the optical waveguide is guided with an optical fiber, wavelength dispersion characteristics of the optical fiber transmission line are compensated for by performing polarization reversalof the substrate along the optical waveguide with a predetermined pattern so that the substrate along the optical waveguide has waveform distortion with characteristics that are inverse to the wavelength dispersion characteristics of the optical fiber transmission line, and the compensation for the wavelength dispersion characteristics is adjusted to a predetermined level by disposing an adjustment member made of a dielectric material or a metal material in the vicinity of the modulation electrode.