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:
Jul. 12, 2022
Filed:
Jul. 12, 2018
Mitsubishi Electric Corporation, Tokyo, JP;
Takeshi Yamatoya, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An optical transmission device includes a semiconductor laser chip in which a semiconductor laser array having a plurality of distributed feedback semiconductor lasers formed on a first semiconductor substrate is formed, a semiconductor waveguide chip in which a semiconductor modulator array formed on a second semiconductor substrate and having the same number of semiconductor modulators as the semiconductor lasers is formed. In the optical transmission device, a waveguide and a waveguide are butt-joined such that a distance between an end face of the waveguide on a side to the semiconductor modulator array in each of the semiconductor lasers of the semiconductor laser array and an end face of the waveguide on a side to the semiconductor laser array in each of the semiconductor modulators of the semiconductor modulator array is 10 μm or less.