JDS Uniphase SWS15100, Руководство пользователя

Страница: 25 / 251

10 – General Information and Specifications
An important advantage of the SWS is that, when testing optical components with multiple
outputs, such as DWDMs, all outputs can be tested simultaneously. As the number of outputs
increases, the reduction in the total test time becomes more significant. The output parameters
for which the SWS can be used to test are:
•
Bandwidth
•
Center wavelength
•
Insertion loss (IL)
•
Polarization dependent loss (PDL), using an optional controller
•
Crosstalk
•
Flatness
•
Isolation
Bandwidth, center wavelength, IL, and PDL can be measured directly with the SWS software.
Crosstalk, flatness, and isolation are obtained by subsequent data analysis. In addition, the user
can select standard ITU channels, or define frequency bands, within which the SWS software
computes relevant parameters, including center wavelength, passband, bandwidth, crosstalk,
and flatness. In PDL mode, the SWS software also computes the average, minimum, and
maximum insertion losses (over all polarizations), and polarization dependent loss, any two of
which can be selected and plotted at one time.
The standard SWS, shown in Figure 1 with the optional polarization controller and a device
under test (DUT), has six main components:
•
Transmitter, which includes the source optics module and the tunable laser source
•
Transmitter cabinet
•
Receiver, with one control module and one or more detector modules
•
Data acquisition board or parallel port interface
•
Software
•
User-supplied computer
Figure 1: Swept Wavelength System with Polarization Controller and Device Under Test
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com