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:
May. 10, 2005
Filed:
Jul. 14, 2003
Sung-kee Kim, Seoul, KR;
Gyu-woong Lee, Suwon-shi, KR;
Yun-je OH, Yongin-shi, KR;
Seong-taek Hwang, Pyongtaek-shi, KR;
Sung-Kee Kim, Seoul, KR;
Gyu-Woong Lee, Suwon-shi, KR;
Yun-Je Oh, Yongin-shi, KR;
Seong-Taek Hwang, Pyongtaek-shi, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
An EML transmitter having a band stop filter to improve the transmission characteristics before and after the transmission is provided. This is achieved by improving the chirp characteristics and the extinction ratio during the transmission of optical signals using an EML. The inventive EML transmitter includes: an EML for generating transmission light; a first lens for focusing optical signal outputs from the EML to prevent loss of the optical signals; a second lens for focusing the optical signals into a core portion of an optical line; and, a band stop filter for removing the D.C. component from the optical signals outputted by the EML.