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. 22, 2014
Filed:
Sep. 17, 2009
Yosuke Akino, Tokyo, JP;
Yoshihito Hirano, Tokyo, JP;
Takayuki Yanagisawa, Tokyo, JP;
Shuhei Yamamoto, Tokyo, JP;
Tsutomu Nagatsuka, Tokyo, JP;
Toshiyuki Ando, Tokyo, JP;
Yosuke Akino, Tokyo, JP;
Yoshihito Hirano, Tokyo, JP;
Takayuki Yanagisawa, Tokyo, JP;
Shuhei Yamamoto, Tokyo, JP;
Tsutomu Nagatsuka, Tokyo, JP;
Toshiyuki Ando, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An optical wavelength conversion element includes: a wavelength conversion waveguide that has a periodic polarization reversal structure having alternately and cyclically formed domains of which polarization directions are inverted, that guides light as a fundamental wave corresponding to the periodic polarization reversal structure, and performs a wavelength conversion of the guided fundamental wave; a first clad that is made of a dielectric having a refractive index lower than that of the wavelength conversion waveguide and is provided in contact with the domains; a second clad that is made of a dielectric having a refractive index lower than that of the wavelength conversion waveguide and is provided in contact with the domains such that the second clad is opposed to the first clad film; a first conducting unit that electrically connects the domains in parallel via the first clad; and a second conducting unit that electrically connects the domains in parallel via the second clad.