Polarization Mode Dispersion System
Polarization Mode Dispersion, or PMD, is a
form of pulse dispersion which can cause the
optical receiver to be unable to interpret the
signal correctly and result in high bit error
rates. PMD can dramatically decrease a fiber
optic networks performance, particularly those
networks operating at high data rates such as
OC192 (STM-64) or OC768 (STM-256).
In addition to the inherent, random polarization
properties of fiber, stress and other environmental
effects (such as changes in temperature) will
directly affect the severity of PMD, causing it to
change over time. In fact, the amount of PMD
present when a fiber is first drawn is likely to
differ from the PMD present after cabling or
placement. PMDs varying nature makes it crucial
to test installed fiber before upgrading to
higher data rates or installing new high data
rate systems.
Features and Benefits:
- Measuring distance of up to 200 km
- Inherent accuracy and speed of Interferometric
measuring method
- Easy-to-use single button testing
- Allow customers to provide a high data rate on fiber
- Provides pre-qualification of existing spans for
upgrades
- Certify cable quality and verify installation practices
