Assertion: fiber amplifier | /r/ObjectUse | used in praseodymium doped amplifiers
Facets:
value: in the 1300 nm region
type: LOCATION
Source sentences:
text: Thulium doped fiber amplifiers have been used in the S-band (1450–1490 nm) and Praseodymium doped amplifiers in the 1300 nm region.