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. 25, 2006
Filed:
Jul. 11, 2001
Gonzalo Wills, Ottawa, CA;
Pierre D. Wall, Ottawa, CA;
Kok-wai Chang, Los Altos, CA (US);
Fahong Jin, Fremont, CA (US);
Xinglong Wang, San Jose, CA (US);
Gonzalo Wills, Ottawa, CA;
Pierre D. Wall, Ottawa, CA;
Kok-Wai Chang, Los Altos, CA (US);
Fahong Jin, Fremont, CA (US);
Xinglong Wang, San Jose, CA (US);
JDS Uniphase Corporation, San Jose, CA (US);
JDS Uniphase, Inc., , CA;
Abstract
An isolated polarization beam splitter or combiner, for joining light from different inputs into one common port, and for dividing a beam of light into orthogonal polarizations. In both modes of operation, the splitter/combiner provides isolation preventing transmission of light in a reverse direction. As a splitter, a beam of light is separated through a birefringent material into sub-beams of orthogonal polarization components, and each sub-beam is passed through a non-reciprocal polarization rotator to rotate the polarization so that a reflected beam, or other counter-transmitted light cannot return on the same path through the birefringent material to the source. As a combiner, two separate beams of light are launched with known orthogonal polarizations into a first birefringent material, passed through a non-reciprocal polarization rotator and then combined as orthogonal polarizations into a single output port.