Patent · US Active

Optical safety implementation in protection switching modules

US8396366B2 · kind B2 · utility

3Cited by

3References

21Claims

0Family size

Assignee

Cisco Technology, Inc. · US

Inventors

Cinzia Ferrari · Parma, IT
Alberto Tanzi · Trezzano sul Naviglio, IT

Key dates

Filing date	Nov 10, 2008
Grant date	Mar 12, 2013
Priority date	—
Expiry date	Jul 29, 2031

Classification

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

Abstract

Optical safety functions are incorporated into protection switching modules which maintain redundant pathways to avoid interruptions in optical network connections. The optical safety functions which lower optical power levels upon interruptions of optical connections are effectively combined with protection switching procedures which are also triggered by interruptions in optical network connections. The interoperation of protection and safety processes keep optical power levels below hazardous levels at system points which might be accessible to human operators.

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