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. 29, 2003
Filed:
May. 25, 2001
John R. Constantino, Livermore, CA (US);
Peter A. Perniciaro, Raleigh, NC (US);
Fairchild Semiconductor Corporation, South Portland, ME (US);
Abstract
A bi-directional optical coupler is provided. The bi-directional optical coupler includes a package having a first side and a second side. A forward coupler and a reverse coupler are included in the package. The forward coupler receives DC electric signals at the first side of the package and transmits DC electric signals at the second side of the package. The reverse coupler receives DC electric signals at the second side of the package and transmits DC electric signals at the first side of the package. The inclusion of two couplers within a single package means that the two couplers are subject to the same temperatures and have similar degradation. For this reason, the two couplers remain matched in terms of efficiency.