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:
Nov. 12, 1996
Filed:
Nov. 23, 1994
Kwang Uk Chu, Daejeon, KR;
Byeong H Kim, Daejeon, KR;
Seo Y Shin, Daejeon, KR;
Ki H Kim, Daejeon, KR;
Yong h Won, Daejeon, KR;
Electronics and Telecommunications Research Institute, Daejeon, KR;
Korea Telecommunication Authority, Seoul, KR;
Abstract
A simultaneous optical compression and decompression apparatus having a simple symmetrical arrangement including a plurality of optical splitting/combining units capable of achieving simultaneous splitting and combining of optical signals in opposite directions, a plurality of optical delay units each arranged between adjacent ones of the optical splitting/combining units and adapted to delay the time taken for an optical signal to pass therethrough in each of opposite directions by a predetermined time, so as to reproduce the optical signal in accordance with a predetermined rule. The apparatus also includes a pair of optical isolation units respectively connected to opposite end-side ones of the optical splitting/combining units, each of the optical isolation units being adapted to allow an optical signal to pass therethrough in one direction; a pair of optical switching units respectively connected to opposite end-side ones of the optical splitting/combining units and adapted to switch optical signals output from the optical splitting/combining units in response to control signals, so as to allow predetermined optical signals to pass therethrough; and a pair of control units respectively connected to the optical switching units and adapted to apply the control signals to the optical switching units.