C
Output power:
The maximum output power for the specied TLS tuning range.
Conditions:
temperature within operating temperature range.
Measurement
with power meter at the end of a single-mode ber
patchcord.
Peak power:
The highest optical power within specied wavelength range.
Polarization extinction
ratio:
The ratio of optical power in the slow axis of the
polarization-maintaining ber to optical power in the fast axis within
a specied wavelength range.
Conditions:
only for TLS with polarization maintaining ber
,TE
mode in slow axis and oriented in line with connector key.
Measurement
with rotatable polarizer at the end of a
polarization-maintaining patchcord, with polarizer orientations for
the fast and slow axes kept xed while changing the wavelength.
Power atness:
When changing the wavelength and measuring the dierences
between actual and displayed power levels, the power atness is
6
half the span between the maximum and the minimum value of all
dierences relative to the mean power.
Conditions:
uninterrupted line voltage, constant power setting,
temperature within
6
1K.
Measurement
with optical power meter.
Power linearity:
When changing the power level and measuring the dierences
between actual and displayed power levels, the power linearity is
6
half the span between the maximum and the minimum value of all
dierences.
Conditions:
uninterrupted TLS line voltage, constant wavelength-
and power level settings, temperature within
6
1K.
Measurement
with optical power meter.
Power repeatability:
The random uncertainty in reproducing the power level after
changing and re-setting the power level or wavelength. The power
repeatability is
6
half the span between the maximum and the
minimum value of all dierences relative to the mean power.
Conditions:
uninterrupted TLS line voltage, constant wavelength,
temperature within
6
1K.
Measurement
with optical power meter.
Power stability:
The change of the power level during a given time span, expressed
as
6
half the span of power changes relative to the mean power.
Conditions:
uninterrupted TLS line voltage, constant wavelength-
and power level settings, temperature within
6
1 K, time span as
specied.
Measurement
with optical power meter.
C-2 Specications
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