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. 17, 2007
Filed:
Aug. 08, 2003
Hong-seok Lee, Sungnam-si, KR;
Ji-deog Kim, Seoul, KR;
Il-kwon Moon, Suwon-si, KR;
Suk-han Lee, Yongin-si, KR;
Hong-seok Lee, Sungnam-si, KR;
Ji-deog Kim, Seoul, KR;
Il-kwon Moon, Suwon-si, KR;
Suk-han Lee, Yongin-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, Gyeonggi-do, KR;
Abstract
A polarization mode dispersion compensation apparatus using a photonic crystal structure includes an optical signal splitter for splitting and outputting incident optical signals into optical signals of a first and second polarization state; an optical signal combiner for combining and outputting the optical signals of the first and second polarization states; an optical signal guide having a photonic crystal structure having a first waveguide and a longer and variable second waveguide; a signal tab for externally outputting a portion of the optical signals and for outputting a portion of the optical signals to a feedback unit; a feedback unit for measuring a dispersion degree of the first and second polarization states inputted from the signal tab, and for outputting a feedback signal for removing the polarization mode dispersion; and an effective optical path length variation unit for varying an effective optical path length of the second waveguide.