C111417 Nokia Nokia Optical Transport Optical Transmission Module

The Nokia C111417 is an ESA40-A (Erbium-doped fibre amplifier) module designed for dense wavelength division multiplexing (DWDM) optical transmission networks. This amplifier unit provides signal amplification across multiple wavelength channels, enabling long-haul and metro optical transport without the need for optical-electrical-optical regeneration.

The ESA40-A is typically deployed within Nokia’s optical networking platforms to extend transmission reach and compensate for signal attenuation in fibre spans. It forms a critical component in carrier-grade transport networks where high capacity and reliability are essential.

This module represents Nokia’s established optical amplification technology used in telecommunications backbone and metro core networks. As optical network equipment evolves, these amplifier modules remain essential for maintaining and extending existing DWDM infrastructure.

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