48
Getting Started
A Sample Session
8 How to set the wavelength for the Tunable Laser module:
a Move to the wavelength parameter, [λ], for the Tunable
Laser module and press ENTER.
b Enter 1540.000 and press ENTER.
9 How to set the modulated power for the Tunable Laser module:
a If power is not displayed in Watts, move to the [POWER]
parameter and press the [Power Unit] softkey.
b Move to <W>, using the cursor key, and press ENTER.
c Move to the [POWER] parameter and press ENTER.
d Enter 500.000.
e Change units to µW, if necessary, using the [Unit+] or
[Unit−] softkey.
f Press ENTER.
10 How to set the modulation frequency for the Tunable Laser
module:
a Select the [FREQUENCY] parameter and press ENTER.
b Change units to kHz, if necessary, using the [Unit+] or
[Unit−] softkey.
c Enter 100.000 and press ENTER.
11 For the Tunable Laser module, press the button beside the
Optical Output. The green LED should switch on to indicate that
the laser is now active.
You should notice that the power reading is approximately half the
value set on the Tunable Laser module. This is because the output is
modulated by a square wave with a 50% duty cycle.
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