About: http://webisa.webdatacommons.org/443531884

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	The optical element of claim 13, wherein the Bragg grating is a holographic Bragg grating recorded on a photorefractive material.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr