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:
Aug. 30, 2022
Filed:
Nov. 02, 2018
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm, SE;
Abstract
Optical protection switching apparatus (), for a single fibre bidirectional WDM optical ring, comprising: first () and second () ports for coupling to first and second adjacent portions of a single fibre bidirectional WDM optical ring; an optical splitter () comprising an input to receive a WDM aggregate optical signal, and first and second outputs coupled to the first and second ports; an optical switch () between the second output and the second port; and processing circuitry () to receive at least one of an indication of transmission continuity in the optical ring and an indication of transmission discontinuity in the optical ring, and to generate a switch control signal () comprising instructions to cause the optical switch to be open when there is transmission continuity in the optical ring and to cause the optical switch to be closed when there is transmission discontinuity in the optical ring.