NeoPhotonics pluggable module transmits 400Gbps over 1500km
Multi-Rate CFP2-DCO coherent pluggable transceivers extend use cases to metro, regional and long haul networks
NeoPhotonics, a developer of silicon photonics and advanced hybrid photonic systems, has used its Multi-Rate CFP2-DCO coherent pluggable transceivers to effectively transmit at a 400 Gbps data rate over a distance of 1500 km in a 75 GHz-spaced DWDM network.
This 1500 km transmission demonstration was carried out on NeoPhotonics Transmission System Testbed using production modules with enhanced firmware and used 75 GHz spaced channels taking the adjacent channel crosstalk-induced penalty into account. The transmission system contains 19 in-line erbium-doped fiber amplifiers (EDFA).
To achieve 1500 km reach and a 400G data rate, the modules were operated at 69 Gbaud using 16 QAM modulation. Probabilistic constellation shaping and a soft-decision forward error correction codec were used to achieve a required OSNR of approximately 20 dB, which is comparable to coherent line card port performance from leading chassis-based coherent systems. The modules each consumed considerably less electrical power than line card solutions operating at comparable data rates and distances.
These 400G CFP2-DCO coherent pluggable transceiver modules use NeoPhotonics high performance InP-based coherent components, along with its ultra-narrow linewidth tunable laser.
“Coupled with our recent demonstration of 800 km 400 Gbps transmission using our 400ZR+ QSFP-DD, our CFP2-DCO 400G 1500 km transmission brings the use of pluggable modules in regional and long haul networks closer to reality,” said Tim Jenks, hairman and CEO of NeoPhotonics. “The ability to implement a long haul coherent transponder in the size and power envelope of a pluggable module is a testament to the progress that has been made in photonic integration and DSP development, and has the potential to be a game changer for telecom as well as DCI networks,” concluded Jenks.