i asked for Calix Optics and got Cisco optics.

Thanks for FS designing a 48CH DWDM & OADM dual fiber system for our 45 site links. They suggested that we could use the 80km DWDM modules for the system, and they also helped us to control the RX power within -15~20dB to ensure the modules’ performance. For now, I haven’t had any packet lost.

I have customers who want to buy transceivers, but the transceivers need to be packed with electrostatic bag packaging. So I searched on internet but no one can meet our needs. Fortunately I found FS. At beginning, I noticed the package on their website are all plastic clamshell box packing, and I thought it would make me disappointed again. But I am so lucky that they can provide me with the electrostatic bag packaging, and fill the box with foam to avoid damage in delivery. Got to say FS.COM have superior service.

Happy to receive such good-qualified DWDM sfps, will be back for more.

This 1560.61nm DWDM SFP is much cheaper and it is compatible with our plat.

Good quick service, competively priced, stock level clear.

Wide range of products and always good deals.

Trusted seller, fast customer service !

Always has the best price for my orders !

FS.COM has always very competitve prices. I have never had any problems with anything I have bought from them.