Infinera Line System 1

What is ILS1?

The ILS1 is Infinera's original optical line system that powers the DTN, the world's first digital ROADM. ILS1 is a highly cost-effective solution for users who do not require the high level of fiber capacity, and extended reach options offered by ILS2.

ILS 1 has three major components:

• Band Mux Module
• Optical Line Amplifier
• Dispersion Compensation Module

The Band Mux Module (BMM) combines wavebands from a number of DLMs onto the same fiber in order to enable rapid turnup of up to 400Gbit/s or 800Gbit/s of line side capacity. BMMs can reside in the same, or different DTN chassis from the associated DLMs, which allows tremendous flexibility in network design while condensing many of the optical line functions that would normally require several separate circuit packs. In addition to band multiplexing, the BMM also includes pre-amp and booster amp modules, and insertion and extraction of the Optical Supervisory Channel (OSC).

The Optical Line Amplifier (OLA) is housed in a standard (23" or 19", 7RU) Optical Transport Chassis. Within ILS1 the OLA uses EDFA techniques for amplification. This same chassis can be used with ILS2's EDFA, Raman, and hybrid amplifiers, thereby providing investment protection. In the Infinera architecture OLAs are fully integrated into the IQ Network Operating System, and are managed using GMPLS protocols for functions such as auto-inventory and automated power balancing.

The Dispersion Compensation Modules (DCM) can be housed in either the DTN or OLA chassis to provide end point or mid-span dispersion management.