HP 8168E - Page 153

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