Cisco Prisma CWDM Filters Data Sheet
Data Sheet
Prisma
®
Dispersion Compensation Module
In digital transport systems, dispersion is a fiber property that causes light pulses to
spread. Dispersion limits both the link’s bit-rate and the maximum transmission distance
that can be achieved through fiber. The Prisma
spread. Dispersion limits both the link’s bit-rate and the maximum transmission distance
that can be achieved through fiber. The Prisma
®
Dispersion Compensation Module
(DCM) contains custom-designed passive fiber optics designed to reverse the effects of
dispersion in order to correct the transmitted pulse shape.
dispersion in order to correct the transmitted pulse shape.
An analogous effect occurs in analog transport systems. Here, dispersion also limits the maximum
transmission distance by increasing the magnitude of second order impairments (CSO) to the
signal. The Prisma Dispersion Compensation Module is designed to reverse the effects of
dispersion, reduce the magnitude of the CSO impairment, and restore the ability to transmit over
greater distances.
transmission distance by increasing the magnitude of second order impairments (CSO) to the
signal. The Prisma Dispersion Compensation Module is designed to reverse the effects of
dispersion, reduce the magnitude of the CSO impairment, and restore the ability to transmit over
greater distances.
Prisma Dispersion Compensation Modules are designed for single 19-inch 1RU rack mount
configurations and are available in a variety of set-ups to accommodate different system needs.
configurations and are available in a variety of set-ups to accommodate different system needs.
Figure 1.
Dispersion Compensation Module
Features
●
Provides optimized dispersion compensation across the 1530 nm to 1565 nm wavelength
range
range
●
Designed for Analog and Digital transport systems including DWDM, long-haul, and high bit-
rate applications
rate applications
●
Fully passive
●
Multiple connector options
●
19-inch 1RU rack mountable design
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