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. 31, 1999
Filed:
Jul. 23, 1997
Hyung-Jae Lee, Seoul, KR;
SamSung Electronics Co., Ltd., Kyungki-do, KR;
Abstract
A polarization device is provided for splitting a transverse electric (TE) mode component and a transverse magnetic (TM) mode component into two output waveguides and for coupling the inputs of a TE mode component and a TM mode component to an output optical waveguide. The integrated optic polarization device includes, in an integrated optic substrate, a first waveguide capable of simultaneously allowing to pass through two mode components, whose polarizations are perpendicular to each other, and a second waveguide, in the same substrate, for allowing to pass through only one of the two polarization mode components. The device has a coupled area having a predetermined length and across which the first and second waveguides are parallel and separated by a predetermined distance. The device also has a non-coupled area in which the first and second waveguides are separated by a distance wider than the predetermined distance. The polarization device can either split or couple the polarization modes and can be made by a simple fabrication process that does not require a difficult process for setting up a precise branching angle, as is required in an existing Y-type splitter.