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:
Apr. 06, 2010
Filed:
Apr. 15, 2009
Shih-chiang Lin, Dashu Township, TW;
Nai-hsiang Sun, Dashu Township, TW;
Shih-Chiang Lin, Dashu Township, TW;
Nai-Hsiang Sun, Dashu Township, TW;
I Shou University, Dashu Township, TW;
Abstract
A chirp optical waveguide includes a chirp grating formed in a ferroelectric substrate, and a waveguide part orthogonal to the chirp grating. The chirp grating has a plurality of grating segments and has a normalized grating period Λx/Λthat increases exponentially in each grating segment and decreases stepwise from each grating segment to a following one of the grating segments, where Λis an initial grating period at the wave propagation distance of zero, and Λx is a grating period at the wave propagation distance of x. The chirp grating provides high wave conversion efficiency for short pulse widths and effectively compensates for a reduction in conversion efficiency due to chromatic dispersion.