About: optical coupler

Premodifier: optical
Head noun: coupler

Same concepts
http://dbpedia.org/resource/Opto-isolator

Broader concepts

label	provenance	confidence
device	isap:267812555	0.798560
numerous optical device	isap:267812566	0.777259
optical component	isap:320035918	0.742807
switch	isap:268892968	0.449982

Narrower concepts

label	provenance	confidence