About: semiconductor optical amplifier

Head noun: semiconductor
Postmodifier: optical amplifier

Same concepts
http://dbpedia.org/resource/Optical_amplifier

Broader concepts

label	provenance	confidence
optical amplifier	isap:21684981	0.493488
device	isap:53287039	0.342890
semiconductor laser	isap:142336710	0.232618
amplifier	isap:21684982	0.196712

Narrower concepts

label	provenance	confidence