Definition of Terms
134
Keysight
N4375D Lightwave Component Analyzer, User’s Guide
Maximum safe average input power (optical)
Maximum optical power that can be applied to the LCA
optical input without permanent change of the LCA’s
characteristics.
Applying more than the specified maximum safe input power may
damage the LCA!
Minimum measurable frequency response (noise floor)
The average of the
DUT with zero output, expressed in
dBe)
. The value is calculated by averaging the measured
responsivity in linear space (rather than decibel space) over
the modulation frequency within a specified modulation
frequency range.
Conditions:
As specified.
Responsivity values are converted from
values
to linear values by: linear = 10
decibel/20
. The average is converted back to
decibels by: decibel = 20*log
10
(linear).
Modulated optical power
The amplitude of a harmonic optical power modulation. The
modulated optical power is calculated from the peak optical
power
P
max
and the average optical power
P
avg
,
in Watts:
P
mod
= P
max
– P
avg
in dBm:
P
mod,dB
= 10- log(
P
mod
/ 1mW).
P
opt
(
t
)
t
P
mod
P
avg
harmomic
oscillation
P
max
C A U T I O N
N O T E
Содержание N4375D
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