NTT Electronics unveils its need-for-speed DSP solution

Created March 14, 2018
Technologies and Products

NTT Electronics has announced a 64GBaud high-performance coherent DSP for Dense Wavelength Division Multiplexed (DWDM) optical transport systems.

The new DSP supports flexible line capacities by combining multiple Baud rates and modulation formats, from 100Gbps/λ by 32GBaud QPSK to 600Gbps/λ by 64GBaud 64QAM.
This maximises per-fibre DWDM capacity from 5Tbps for tens of thousands of kilometers Ultra Long Haul (ULH) to over 30Tbps for 120km ZR transmission, and further doubles capacity by using both C-band and L-band.

High-speed real-time coherent processing at 64GBaud enables thousands of kilometers LH transport at 200Gbps/λ by Dual-Polarization (DP) QPSK, hundreds of kilometers metro transport at 400Gbps/λ by DP 16QAM, or 120km ZR transport at 600Gbps/λ by DP 64QAM.

The new offering is the company’s second product in its “third-generation” CMOS coherent DSP family. The new DSP core leverages Broadcom’s 16nm CMOS fin-FET high-speed mixed-signal technologies, which enhance per-lambda capacity by two to three times up to 600Gbps/λ.
In addition, it extends fibre reach by 60% compared with the previous 32GBaud low-power DSP unveiled in March 2016.

“Every service provider needs to maximise fibre capacity to meet increasing bandwidth demand,” said Haruhiko Ichino, NTT Electronics executive vice president and general manager of the Broadband System & Device Business Group.

“We are strongly committed to being a pioneer in coherent DSP innovation and to provide merchant silicon solutions for cost-effective upgrades in LH, metro and shorter-reach data centre interconnect (DCI) applications.”

Last month, fellow  NTT Group subsidiary NTT Com took a 100% share in US-based RagingWire Data Centers, taking an option on top of the 80% it acquired in January 2014. NTT Com has now made RagingWire its main Americas data centre services platform, covering the US, Canada, Latin America and South America under the global Nexcenter brand.


Antony Savvas

This article was written
by Antony Savvas

Freelance journalist Antony Savvas has been a technology ‎writer for almost 30 years and has worked across the IT sector's major magazines and websites. He was Computer Weekly's first ever networks and telecoms editor in the late1990s as the computing, mobile and networking industries converged. Antony also undertakes corporate writing assignments for the world's biggest technology companies.