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. 17, 2005
Filed:
Apr. 29, 2002
Zhimin Liu, San Jose, CA (US);
Mark S. Wang, San Jose, CA (US);
Shifang LI, Pleasanton, CA (US);
Wenhui Wang, Santa Clara, CA (US);
Yanbin Shao, San Jose, CA (US);
Zhimin Liu, San Jose, CA (US);
Mark S. Wang, San Jose, CA (US);
Shifang Li, Pleasanton, CA (US);
Wenhui Wang, Santa Clara, CA (US);
Yanbin Shao, San Jose, CA (US);
Oplink Communications, Inc., San Jose, CA (US);
Abstract
An optical circulator has a first collimator; a first block of birefringent material; a first compound polarization rotator; a light angle deflector (e.g., Wollaston prism); a second compound polarization rotator; a second block of birefringent material; and a second collimator. Light from the first fiber exits the first collimator along a first path into a first collimated beam that first hits the central plane on a crossing line between the interface and the central plane such that the first collimated beam exits the light angle deflector along a second path substantially parallel to the longitudinal direction and is received by the second fiber. Light from the second fiber exits the second collimator along the second path into a second collimated beam that exits the light angle deflector along a third path and is received by the third fiber.