About: http://webisa.webdatacommons.org/41537424

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	In optical communication systems, messages are transmitted typically through optical fibers by carrier waves of optical frequencies that are generated by sources, such as lasers or light emitting diodes.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com