We were working on a project last month and were thinking of using this CWDM mux demux though we were not sure whether our solution was available or not. Thanks to FS technical support. They offered great suggestions that helped us out. Very professional and helpful team.

It is an 18CH CWDM mux demux with operating wavelengths from 1270 to 1610nm. Happy to see it works on my OTN network. For everyone who wants a well organized and stable OTN network, it is a must.

We'd like to realize CWDM transmission between Site A and Site B about 8km. There were three devices with the same wavelength in each site. According to our demands, multiple modules of the same band would transmit via the dual-fiber MUX. But I was not sure about whether it would be workable with the MUX only, so I consulted with my account manager. She advised that the OEO was also required to match with the CWDM MUXes. She not only provided us with an integrated CWDM solution based on our current network but also explained the details to us including the link loss. Professional and supportive enough!

I purchased these for accomdating several FMU plug-in modules. This is not my first purchase of this case. Nothing special to mention about it. It is just good quality at a fairly price. For a value 1U case, it does its job. The screws that came with are solid and abundant. I only load them with FS self-designed plug-in modules which all fit in it well. Be sure you pay attention to the product description if you try to insert other components.

Had wonderful shopping with FS. We always got their timely replies for our CWDM issues. The 18CH mux performed cool for our 10Gbps data.

We had a new dark fiber between our controlling room and streaming office with 3km apart. We planed to use CWDM to break the dark fiber into multiple waves. We once happened to see FS OTN cases online, and thought they might offer some help for our project. Exactly, they did. We talked with the AM and told him our demands. The man confirmed the details with us, and always answered our connecting questions in patience. We were grateful that the final solution 18CH CWDM MUX system met all needs. We could use it to deliver our 12CH businesses at 10Gbps, and the other 6 could be reserved for expansion. Except for the 18CH MUX, we also bought the compatible modules and fibers recommended by the AM. Everything is great, will come again.

The final solution meets our demands for CWDM and monitoring. We are satisfied.

The deal started with a talk with our account manager. We needed to connect two data centers located at two different places, and there was already a pair of G.652D Dark Fiber of 2 kilometers long between them. We wanted to break them into CWDM wavelengths thus allowing future expansion, but the switches in two data centers adopted 10G transceivers of normal wavelengths only. At first we thought it would be complicated to solve these problems, however, FS team made out the plan within a day. They recommended us using OEO to convert 10G SR signals at the two data centers into CWDM wavelengths, then they can be transmitted by the CWDM transceivers and 16CH CWDM muxes. Their FMT system could monitor the FS products as well as some of our devices. A good system for convenient monitoring!

Our original need was to deliver and monitor several 10G and 1G signals, and a 3G video signal. We talked with FS about our needs and they suggested using 16ch CWDM solution. The solution worked like a charm, and there are some channels left for future expansion.

We had been doing lots of research on FS products, and wondered whether the 18 channels CWDM mux could fit our transmission less than 2km. We contacted the AM. The guy first asked our networking environment and optical loss requirement. Then he assured us that the mux could fit our demands, and recommended the 40km 10G CWDM modules and related fiber optic attenuators. Thus, our RX power of the transceiver can be limited in the range of -8~-13dbm.
We quickly got our items from UPS. They were protected in solid packages. Just installed the ears on the two sides of the mux, we could easily put it on our network rack. We have run it for a time, no bad or missed connections.

I had bought two FMU-C182761M in FS for my site to site dark fiber network before, the products work well. This time I planned to insert an add/drop module in the middle of the network. According to my current network, my account manager suggested me to use the dual fiber cwdm oadm matching with this rack chassis. Having used a while, this fmu chassis is indeed useful for saving rack space and managing modules.