FS（飞速） C31 DWDM-SFP10G-80 DWDM SFP+万兆光模块 1552.52nm 80km

I've ordered these to replace the previous h3c transceivers and I am happy with the fact that they are an excellent replacement. All the transceivers just worked as soon as they were plugged into the interfaces.

Our new project includes 1G and 10G long-haul interconnect among multiple sites. FS technical guys recommended us to deploy the DWDM and CWDM systems at the same time, and help us solve lots of problems when choosing the suitable products. One of that was, to avoid later network maintenance and upgrade troubles, my boss required to use 10G DWDM H3C transceiver on the 1G port, I was not sure whether it could work or not. The FS guys helped us test the module working status on their switches and offered us the video, no issues of the connection. Thanks. All products have arrived on time, and we will start our project deployment this week.

I just got these but so far they work great on my Juniper Switches. I was a little worried about using off brand SFP transceivers but these work fine.