FS OADM Solution Adds Access Points to a CWDM Network

Posted on May 31, 2022


The escalated demand for bandwidth and capacity are driving networks to look for agile, cost-effective data optical transport solutions. The Murphysboro government of Illinois needed to increase their network capacity to create a highly flexible network that will support seven sites of public infrastructures within the region.


The government had five buildings connected via multimode fibers in existing Gigabit Ethernet switch. They managed to install single mode fibers in town to link numerous buildings that can access city LAN. The problems they encountered including: They had little knowledge about WDM technology and had no idea how to leverage existing wavelength and add new sites to the link. How to transfer multimode to singlemode fiber to achieve a relatively longer data transmission.


An OEO was deployed to convert the standard SFP SX transceivers into the corresponding CWDM transceivers. So as to change multimode fiber to single mode fiber to expand the link reach.

To separate the wavelengths at Site 3, a 4CH OADM is placed after the 8CH CWDM Mux/Demux. The CWDM OADM offers capabilities to add/drop selected wavelengths at any node in the network and seamlessly change the network node capacity as needed. In this case, there will be four wavelengths (1470, 1490, 1510, 1530) drop into different places at Site 4,5,6,7.

OADM Solution


This design has provided a flexible and transparent solution, which can not only add new sites for the whole link but also prepares for future fiber expansion. FS CWDM and OADM equipment are easy to install, enable fast network deployment and have low power consumption, all of which significantly reduce cost while making for a compelling ROI.

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