I have a question about the use of a Y cable for redundancy on DWDM point to point links.
Basically the topology Im looking at is having the 'hands' or the short ends of the Y each connected to the client port of a transponder card, and the 'stem' or the longer part of the of the Y connected to the client port of the end device, a router. This will happen at both ends of the link, so in this way I will be protecting against transponder card failure. Of course this does not protect against router failure.
ROUTER_A---<(2 x TXP)====wavelength====(2 x TXP)>---ROUTER_B
The question is: Is it possible for the transponder cards to be in separate chassis, and the Y cable connecting to these transpoder cards in the separate chassis, such that I achieve chassis protection, in addition to Transponder card protection ?
Also since the Y cable divides the power of the optical signal, how best to verify that my system can handle the attenuation of the signal from the Y cable ?