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:
Jul. 05, 2005
Filed:
Mar. 12, 2002
LI Wang, San Jose, CA (US);
Jerry Lee, Saratoga, CA (US);
Qikiao Chen, Fremont, CA (US);
Tim Wang, San Jose, CA (US);
Li Wang, San Jose, CA (US);
Jerry Lee, Saratoga, CA (US);
QiKiao Chen, Fremont, CA (US);
Tim Wang, San Jose, CA (US);
Alliance Fiber Optic Products, Inc., Sunnyvale, CA (US);
Abstract
A fiber optical circulator includes a first collimator and a second collimator sandwiching a circulator core therebetween. The first collimator and the second collimator respectively define Portand Portthereof, and the first collimator further defines Portthereof. The circulator core includes a first crystal and a second crystal at two ends respectively confronting the first collimator and the second collimator aside. The circulator core further includes a first group of two half-wavelength waveplates and a first Faraday rotator, and second subassembly a second group of two half-wavelength waveplates and a second Faraday rotator. A third crystal is disposed between the first subassembly and the second subassembly wherein a backward light path from Portto Portpasses the third crystal and is deflected by the third crystal toward the first collimator though total internal reflection.