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Tunable Lasers
How to Perform a Wavelength Sweep
112
Agilent 8163A Lightwave Multimeter, Agilent 8164A Lightwave Measurement
System, & Agilent 8166A Lightwave Multichannel System, Fourth Edition
How to Change the Output Wavelength
5
Move to [
λ
] and press
Enter
. [
λ
] is the output wavelength,
λ
, in the equation
above.
6
Enter 1570 and press
Enter
.
N O T E
Note how the frequency offset, [
∆
f], changes as you change the value of [
λ
].
How to Set the Base Wavelength
N O T E
You cannot set <
λ
0>, the base wavelength directly.
7
Press [
λ
->
λ
0
] to set <
λ
0> to 1570 nm. <
λ
0> represents the base wavelength,
λ
0
, in the equation above.
N O T E
Note how the frequency offset, [
∆
f], changes to zero when you press
[
λ
->
λ
0
].
How to Change the Frequency Offset
8
Move to [
∆
f] and press
Enter
. [
∆
f] represents the frequency offset,
df
, in the
equation above.
9
Enter 1.000 and press
Enter
. The frequency offset, [
∆
f], changes to 1.000 THz.
N O T E
Note how the output wavelength, [
λ]
, changes as you change the value of [
∆
f].
How to Perform a Wavelength
Sweep
What is a Wavelength Sweep ?
A wavelength sweep is performed when the instrument changes the optical
wavelength of the optical output across a user-defined wavelength range. You can
use a wavelength sweep to measure the wavelength-dependent loss of an optical
component.