My ISP is offering 25GBit Fiber soon and I am looking into the required hardware. One of the devices I will need to purchase is a new transceiver that can handle the speeds.
The one my ISP recommends is the Flexoptix P.B1625G.10.AD but it is quite pricey compared to another one I found that I believe should be a compatible substitute for it, which is the FS.com SFP28-25G-BX.
I asked my ISP whether or not the FS.com transceiver would work as well. Their reply was that they cannot definitively say that it will but they would tend towards that it should.
One aspect of why they were not sure is the transmitter type. One of them is labelled as BIDI LR while the other is called DFB BiD.
Now my question is, what is the difference between these two types? Is it just a different marketing term for the same thing and these two receivers should work together? Or is there a technical difference that would render them incompatible?
If you believe them to be incompatible and have an alternative transceiver from FS.com I am all ears for any suggestions. Thanks!