Bought the DCM to offer fiber compensation and reduce BER for our DWDM network (about 35km). It worked smoothly with zero packets dropped. BTW, the service they provided was also amazing. Recommended.

We planned to make a 112km link, and required the power loss was about 30dB. We came to FS and asked them to design a cost-effective solution for us. These knowledgeable and professional men quickly sent us the connection diagram, and discussed with us to confirm the details. They thought a single fiber DWDM system could meet our demand. We needed to use 80km SFP+ modules to do the link. Then used EDFAs to amplify the optical signal. FS guys also advised that we’d better use the 40km DCM #65781 for dispersion compensation. Then we adopt their suggestion, and they arranged the delivery immediately. Followed their design, we installed the devices. Tested the link, zero packets dropped. And I have no questions this connection will last for a very very long time.

I thought the 80km DCM may suit our DWDM network. But its interface was FC would be better. The AM said we could choose customized service. Then we ordered one with FC connector. The product arrived without any breakage.

The products are well-packaged and shipping is as promised, our testing report is also the same as the website. Very good and precise quality.

Products were great as usual, and after the purchasing, I contacted FS with a few questions, which were all nicely answered. They provided us the detailed guidance of installation and solution configuration, definitely recommended!

I enjoyed a great purchasing experience at FS. com. Even if I just need to buy some equipment to compensate for the dispersion in the link, their solution team and my Account Manager have patiently analyzed a lot for me.

After using the product, everything goes smoothly, the signal quality in the link is effectively improved. Excellent service and products!

I bought this after discussed with FS Engineer Team and got the project diagram, this work perfectly with my project. Awesome items and awesome service, will back to you guys again.

It was my first time to buy this product from FS. My friend introduced FS to me and I also have seen FS on Google before. So I had a try. Since I was not familiar with their website. My Account Manager Miji helped me a lot and answered my questions patiently and promptly. Now the modules work well in my DWDM link. I think I will pay a second visit to their website soon.

Bought amplifiern and DCM to use in a long haul DWDM network. I tried several modules experimentally, but it works without problems.Especially DCM is excellent with low loss.