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:
Dec. 26, 2006
Filed:
Mar. 10, 2004
Hongbin Zhang, Marlboro, NJ (US);
LI Liu, Carneys Point, NJ (US);
R. Brian Jander, Freehold, NJ (US);
Alexei N. Pilipetskii, Colts Neck, NJ (US);
Hongbin Zhang, Marlboro, NJ (US);
Li Liu, Carneys Point, NJ (US);
R. Brian Jander, Freehold, NJ (US);
Alexei N. Pilipetskii, Colts Neck, NJ (US);
Tyco Telecommunications (US) Inc., Morristown, NJ (US);
Abstract
Methods and apparatus of performing polarization control for optical transmissions. The methods and apparatus enable polarization control devices to achieve a desired output state of polarization regardless of the input state of polarization. The desired state of polarization can be achieved by rotating waveplates in a polarization controller in a sequential fashion. Each waveplate may be continually adjusted or dithered so long as the feedback signal satisfies a feedback condition. Once the feedback signal exceeds the feedback condition, the next waveplate in the polarization controller is adjusted. This enables the methods and apparatus to rapidly adjust the state of polarization away from dead spots and minimize loss control problems.