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:
Jun. 23, 1992
Filed:
May. 03, 1991
Robert J Deri, Rumson, NJ (US);
Bell Communications Research, Inc., Livingston, NJ (US);
Abstract
A polarization diversity receiver comprising a lower optical waveguide and an upper waveguide formed thereover in the area of the receiver. A rib formed in the lower waveguide away from the receiver directs light along an optical axis in the receiver. A metal layer deposited over the upper waveguide preferentially couples light of the TE-mode from the lower to the upper waveguide, where it is detected by a p--i--n photo-diode. A second p--i--n photo-diode is formed on the optical axis a distance away from the first photo-diode. The intervening region acts as a coupling region to couple the remaining TM-mode radiation from the lower to the upper waveguide, where it is detected by the second photo-diode.
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