We all know there really can be too much of a good thing – 100G packet-optical transport is no exception. In 2013 Juniper made good things happen with the introduction of the 2x100G DWDM PIC (P1-PTX-2-100G-WDM) for the PTX5000 and PTX3000. For the first time, Juniper customers did not have to sacrifice port density when choosing between 100G ‘grey’ client interfaces or ‘colored’ DWDM line interfaces.
The 2x100G DWDM PIC packs a punch – up to 2000km reach from the front panel of a router! No more clunky, expensive third-party external transponders. Yet for many applications, having the ability to shoot halfway across the continental US is overkill. Enter the 2x100G Metro DWDM PIC (PTX-2-100G-WDM-M😞
The 2x100G Metro DWDM PIC on booth duty @ OFC 2015
Built on the same foundation as its big brother, the 2x100G Metro DWDM PIC is cost-optimized for reaches up to 400km. This is ideal for conventional Metro DWDM in addition to modern data center interconnect (DCI) applications. Since they use common DP-QPSK coherent DSP and soft-decision FEC technology, both PICs are directly interoperable and share common Junos management. Same great taste, fewer $$$.
With two great options on the table, make sure you pick the right PIC for your application. While it’s tempting to simply use distance as a figure of merit, remember in DWDM networks your mileage may vary. Every link is unique, so pay close attention to the key specs for your application. In a conventional DWDM network min OSNR and CD tolerance are often the two most significant considerations. In contrast, on dark fiber links you need to pay attention to TX output power and min RX sensitivity. Be sure to check out the optical specs and PIC the optimal DWDM interface for your next packet-optical deployment.