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. 29, 2013
Filed:
Feb. 28, 2011
Su Hwan OH, Daejeon, KR;
Sahnggi Park, Daejeon, KR;
Yongsoon Baek, Daejeon, KR;
Kwang-ryong OH, Daejeon, KR;
Su Hwan Oh, Daejeon, KR;
Sahnggi Park, Daejeon, KR;
Yongsoon Baek, Daejeon, KR;
Kwang-Ryong Oh, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon-city, KR;
Abstract
Provided are a reflective semiconductor optical amplifier (R-SOA) and a superluminescent diode (SLD). The R-SOA includes: a substrate; an optical waveguide including a lower clad layer, an active layer independent of the polarization of light, and an upper clad layer sequentially stacked on the substrate, the optical waveguide comprising linear, curved, and tapered waveguide areas; and a current blocking layer formed around the optical waveguide to block a flow of current out of the active layer, wherein the linear and curved waveguide areas have a single buried hetero (BH) structure, and the tapered waveguide area has a dual BH structure.