Infinera Technology

At Infinera, innovation is in our DNA

Service routing in the Digital Optical Network

Using PIC technology, Infinera networks turn up wavelength capacity in 100Gbit/s increments, and this capacity is immediately available for ESI service routing and provisioning. If we replace both the all-optical ROADMs and the OEO OXCs with a GMPLS-aware "digital ROADM" then the mechanism of service routing changes completely.

Unlike in the all-optical network, service provisioning and routing can now be automated. There are three reasons why this is now possible:

  • Thanks to PIC economics, capacity is already positioned in the network waiting to be used by ESI

  • Thanks to the ubiquitous presence of ESI, all devices have a complete view of the network topology

    ... and ...

  • Thanks to integrated switching and grooming all devices have the ability to route services over any available timeslot or wavelength without the risk of wavelength blocking.

In the Infinera architecture all services operate over readily available line-side capacity, irrespective of the wave technology in use in the network core, 10Gbit/s, 40Gbit/s or 100Gbit/s. This includes "super-lambda" services such as 40G Ethernet and 100G Ethernet. More importantly from an ESI perspective is the fact that IP routing operations have historically been developed around digital networks, not analog.


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