Optix OSN

yjhd · Created Jan 18, 2019 01:05:53

OSN series including WDM equipemnt(OSN1800/3800/6800/8800....) and MSTP equipment(OSN3500/7500...),.
DCM is used to compensate for chromatic dispersion (dispersion includes chromatic dispersion and polarization mode dispersion). In WDM systems, DCM is used to compensate for chromatic dispersion; DCU is used to compensate for chromatic dispersion in MSTP systems.
For MSTP: The DCU can compensate for the dispersion for a maximum of two channels of optical signals. The DCU can be used with the BA and PA.
For WDM: DCM modules are installed in DCM frames and are used to compensate for the positive dispersion of transmission fibers to help maintain the shape of a propagated signal.
After an optical signal is transmitted over a certain distance, the optical signal pulse expands because of the accumulation of positive dispersion. This pulse expansion has a negative impact on system transmission performance. Therefore, dispersion compensation modules (DCMs), which are passive devices, are required to compensate for the positive dispersion. DCMs use the inherent negative dispersion of a dispersion compensating fiber to offset the positive dispersion of transmission fibers to prevent pulse expansion.
Depending on the technology that DCMs use, two types of DCMs are available: dispersion compensating fiber (DCF)-DCMs and fiber Bragg grating (FBG)-DCMs.
These DCMs can compensate for the following transmission distances: 5 km (3.1 mi.), 10 km (6.2 mi.), 20 km (12.4 mi.), 40 km (24.8 mi.), 60 km (37.3 mi.), 80 km (49.7 mi.), 100 km (62.1 mi.), 120 km (74.6 mi.), 160 km (99.4 mi.), 200 km (124.2 mi.), and 240 km (149.1 mi.).
Each DCM frame can hold up to two DCM modules. The left- and right-side mounting ears attach the DCM frame to the columns of a cabinet.

mohamed.saeed · Created Jan 17, 2019 11:57:21

DCM is for dispersion compensation modules
which used to compensate the light pulses against broadening caused by chromatic and polarization dispersion due to long distances transmission and it has many types depends on the distances used with .
we have 2 types which is TDC and DCU
and for DCU as a example we have dispersion compensation available from 20 km up to 120 km

yjhd · Created Jan 18, 2019 01:05:53

OSN series including WDM equipemnt(OSN1800/3800/6800/8800....) and MSTP equipment(OSN3500/7500...),.
DCM is used to compensate for chromatic dispersion (dispersion includes chromatic dispersion and polarization mode dispersion). In WDM systems, DCM is used to compensate for chromatic dispersion; DCU is used to compensate for chromatic dispersion in MSTP systems.
For MSTP: The DCU can compensate for the dispersion for a maximum of two channels of optical signals. The DCU can be used with the BA and PA.
For WDM: DCM modules are installed in DCM frames and are used to compensate for the positive dispersion of transmission fibers to help maintain the shape of a propagated signal.
After an optical signal is transmitted over a certain distance, the optical signal pulse expands because of the accumulation of positive dispersion. This pulse expansion has a negative impact on system transmission performance. Therefore, dispersion compensation modules (DCMs), which are passive devices, are required to compensate for the positive dispersion. DCMs use the inherent negative dispersion of a dispersion compensating fiber to offset the positive dispersion of transmission fibers to prevent pulse expansion.
Depending on the technology that DCMs use, two types of DCMs are available: dispersion compensating fiber (DCF)-DCMs and fiber Bragg grating (FBG)-DCMs.
These DCMs can compensate for the following transmission distances: 5 km (3.1 mi.), 10 km (6.2 mi.), 20 km (12.4 mi.), 40 km (24.8 mi.), 60 km (37.3 mi.), 80 km (49.7 mi.), 100 km (62.1 mi.), 120 km (74.6 mi.), 160 km (99.4 mi.), 200 km (124.2 mi.), and 240 km (149.1 mi.).
Each DCM frame can hold up to two DCM modules. The left- and right-side mounting ears attach the DCM frame to the columns of a cabinet.

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