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:
Apr. 25, 2000
Filed:
Aug. 28, 1998
Ernest E Bergmann, Fountain Hill, PA (US);
William L Emkey, Bethlehem, PA (US);
Lucent Technologies, Inc., Murray Hill, NJ (US);
Abstract
An isolator assembly eliminates optical feedback or return beams in multiple stages. The isolator assembly employs passive optical components, including birefringent walk-off plates and non-reciprocal rotation plates. The rotation plates are located adjacent the walk-off plates. The optical components form a compact, integral unit. In the forward direction, the isolator assembly translates a polarized component beam through a triangular path to first separate and then combine the beam with respect to an orthogonally polarized component beam. By alternating birefringent sheets and rotation sheets, several isolator assemblies may be produced from a single layered stack.