Assertion: fiber amplifier | /r/HasAspect | moderate gain
Facets:
value: in the final stage
type: TEMPORAL
value: due to power efficiency issues
type: CAUSE
value: usually
type: DEGREE
Source sentences:
text: However, high-power fiber amplifiers usually have a moderate gain in the final stage, partly due to power efficiency issues; one then uses amplifier chains where the preamplifier provides most of the gain and a final stage the high output power.