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Performance Tests Performance Test Instructions
96 Agilent 81480A and 81680A, 40A, 82A, 42A, & 89A Tunable Laser Modules User’s Guide,
Sixth Edition
a Press Peak Search in the Marker field.
b Set Marker to Center Wavelength and note its displayed
wavelength as:
OSA_l_center = ________________ nm
6 Find the maximum power level at OSA_λ_center, peak_power, and
enter the result in the test record in [pW]:
Peak_power = ___________ 10
-12
W = ___________ pW
7 Measure partial noise of the spectrum.
With a sampling step of 1 nm on the OSA, check all 30 power levels
within the recorded spectrum, starting at
OSA_λ_center – 15 nm and finishing at OSA_λ_center + 15 nm
without recording a value at OSA_λ_center.
NOTE Note the “partial noise power level” values in the table in [pW], where
1 pW = 10
−12
W.
Example:
Wavelength,
Relative to OSA_λ_center Partial Noise Power levels
−15 nm pW
−14 nm pW
−13 nm pW
…. pW
…. pW
−2nm pW
−1nm pW
+/− 0 nm (= OSA_λ_center) pW
+1 nm pW
+ 2 nm pW
…. pW
…. pW
+13 nm pW
+14 nm pW
+15 nm pW
Sum of all partial noise power levels: pW