About: http://webisa.webdatacommons.org/339964464

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	To improve sensitivity, the unbalanced interferometer includes a coupler for coupling radiation to the detector, the coupler being an N ???N coupler where N is an integer greater or equal to 3.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com