About: http://webisa.webdatacommons.org/34955951

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	This invention relates generally to the field of optical devices and more particularly to optical devices, such as circulators, isolators and switches, that are used in optical communications systems.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com