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. 11, 2004
Filed:
Sep. 15, 2000
Applicant:
Inventors:
Zhong Ming Mao, Kent, WA (US);
Desmond L. Seekola, Santa Rosa, CA (US);
Arne Erstling, Santa Rosa, CA (US);
Assignee:
Spectraswitch, Inc., Santa Rosa, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 2/728 ;
U.S. Cl.
CPC ...
G02B 2/728 ;
Abstract
A polarization independent optical device is provided wherein the device has two optical paths that include one or more birefringent crystals, a electrically controllable rotator, and a fixed waveplate. The device may operate as a switch, attenuator, coupler, or polarization mode dispersion compensator. The device may also include several folded path embodiments, a multifunctional embodiment, and a temperature insensitive embodiment.