Patent · US Active

Optical switch, an optical switching apparatus, an optical communications network node and an optical communications network

US9806841B2 · kind B2 · utility

0Cited by

0References

19Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Francesco Testa · Pisa, IT
Alberto Bianchi · Cantù, IT

Key dates

Filing date	May 23, 2014
Grant date	Oct 31, 2017
Priority date	—
Expiry date	May 23, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH04Q2011/0081
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

An optical switch, comprising: a first optical waveguide, a first optical add path, a second optical add path and a micro-ring resonator. The micro-ring resonator is operable to add a first optical signal at a preselected wavelength received from the first optical add path to the first optical waveguide to travel in a first direction through the first optical waveguide. The micro-ring resonator is further operable to add a second optical signal at the preselected wavelength received from the second optical add path to the first optical waveguide to travel in a second direction through the first optical waveguide opposite to the first direction. There is also provided an optical drop switch, an optical switching apparatus, an optical communications network node and an optical communications network.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.