HP 8168E User Manual page 153

Relative intensity noise
(RIN):
Relative wavelength
accuracy:
Sidemode suppression
ratio:
Source spontaneous
emission:
Wavelength range:
Wavelength repeatability: The uncertainty in reproducing the wavelength after detuning and
Wavelength resolution:
Wavelength stability:
The square of the RMS optical power amplitude divided by the
measurement bandwidth and the square of the average optical
power, expressed in dB/Hz.
coherence control o , temperature within operating
Conditions:
temperature range, frequency range 0.1 to 6 GHz.
with HP lightwave signal analyzer.
Measurement
When randomly changing the wavelength and measuring the
di erences between the actual and displayed wavelengths, the
relative wavelength accuracy is
maximum and the minimum value of all di erences.
uninterrupted TLS line voltage, constant power level,
Conditions:
temperature within operating temperature range, coherence control
o .
with wavelength meter.
Measurement
The ratio of average signal power to the optical power of the highest
sidemode within a distance from 0.1 to 6 GHz to the signal's optical
frequency, expressed in dB.
at a speci ed output power and wavelength range,
Conditions:
temperature within operating temperature range, coherence control
o .
with HP lightwave signal analyzer using heterodyning
Measurement
method.
The ratio of spontaneous emission power in 0.1 nm bandwidth to
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signal power within a 2 nm window around the signal wavelength,
!
at maximum speci ed output power, expressed in dB per 0.1 nm.
at maximum speci ed output power, temperature within
Conditions:
operating temperature range, coherence control o .
with optical spectrum analyzer at 0.1 nm resolution
Measurement
bandwidth.
The range of wavelengths for which the speci cations apply.
re-setting the wavelength. The wavelength repeatability is
span between the maximum and the minimum value of all changes.
uninterrupted TLS line voltage, constant power level,
Conditions:
temperature within operating temperature range, coherence control
o .
with wavelength meter.
Measurement
The smallest possible displayed wavelength increment / decrement.
The change of wavelength during a given time span, expressed as
half the span between the maximum and the minimum wavelengths.
uninterrupted TLS line voltage, constant wavelength-
Conditions:
and power level settings, coherence control o , temperature within
6
1 K, time span as speci ed.
with wavelength meter
Measurement
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half the span between the
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Speci cations C-3
half the
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