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What Is OADM In WDM Network ?
SOPO Optical Communication Co.,Ltd | Updated: Jun 01, 2018

What is OADM in WDM Network ?

OADM is generally deployed in WDM network which includes CWDM (coarse wavelength division multiplexing) and DWDM (dense wavelength division multiplexing). Thus, OADM can also be divided into CWDM OADM and DWDM OADM according to its applications. During the selection of OADM, the fiber count that a OADM should be considered. The most commonly used CWDM OADM can add or drop fiber count of 1, 2 and 4. For DWDM OADM, the fiber counts are usually 1, 2, 4 and 8. The installation environment should also be considered during the selection of OADM. There are mainly three types of OADM with different package form factors: plug-in module, pigtailed ABS box and rack mount chassis. The plug-in modules can be installed in empty rack enclosures. The following shows three CWDM OADM with different package form factor.


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