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Performance Test Instructions Performance Tests
Agilent 81480A and 81680A, 40A, 82A, 42A, & 89A Tunable Laser Modules User’s Guide, Sixth Edition 97
8 Determine total noise power by adding up all 30 partial noise
power levels:
OSA_noise = Sum of all partial noise power levels
OSA_noise = _________ pW
9 Note the OSA_noise value in the test record.
10 Determine SSE of the Tunable-Laser output signal by using the
maximum value at its border:
a Note the power measured at:
OSA_l_center - 1 nm
b Note the power measured at:
OSA_l_center + 1 nm
c Determine the larger of these two power values and note it as
SSE_power_lTLS_max.
NOTE Note all the power values in [pW], where 1 pW = 10
−12
W.
d SSE_power_lTLS_max= ________ 10
-12
W = _______ pW
11 Determine the Total SSE power, power_total_SSE.
Add the values of OSA_noise and SSE_power_λTLS_max:
power_total_SSE = OSA_noise + SSE_power_λTLS_max
= ___________ 10
-12
W = ___________ pW
12 Calculate the Total SSE in [dB] by using the following formula:
NOTE Make sure you that all values are power values are entered in the same
units, for example Watts, W, or picowatts, pW. This ensures that the
equation will give Total SSE in decibels, dB.
13 Note the result in the test record:
Total SSE = _____________________ dB
Total SSE 10
peak power
power total SSE
--------- -------------------------------------log×=