News: Optoelectronics
10 March 2020
NeoPhotonics announces volume production of high-bandwidth coherent driver modulator for 64GBaud cloud and DCI applications
NeoPhotonics Corp of San Jose, CA, USA (a vertically integrated designer and manufacturer of silicon photonics and hybrid photonic integrated circuit-based lasers, modules and subsystems for high-speed communications) has announced general availability and volume production of its 64GBaud high-bandwidth coherent driver modulator (HB-CDM).
The CDM brings together NeoPhotonics’ 64GBaud intradyne coherent receiver (ICR) and ultra-narrow-linewidth tunable laser to enable customers to implement single-channel 600G data transmission over data-center interconnect (DCI) distances of about 80km using 64 QAM. These components also support 400G over metro distances of 400-600km using 64GBaud and 16 QAM or 200G over long-haul distances of greater than 1000km using 64GBaud and QPSK.
NeoPhotonics’ HB-CDM is implemented in a small-form-factor (25mm x 12mm x 5mm) package that co-packages a linear, quad-channel, differential 64GBaud driver with an indium phosphide (InP)-based Mach-Zehnder (MZ) quadrature modulator chip. It provides efficient coherent multi-level modulation formats, such as DP-QPSK, DP-16QAM and DP-64QAM, to support coherent transmission up to 64GBaud. The HB-CDM is compliant with the OIF’s Implementation Agreement OIF-HB-CDM-01.0 ‘High Bandwidth Coherent Driver Modulator’, and assures users a 3dB EO bandwidth of greater than 40GHz. The compact size fits in a CFP2-DCO pluggable module.
The HB-CDM is also available in a ‘C++’ CDM modulator version, which supports tuning across the full ‘Super C-band’ covering 6.4THz of spectrum or up to 50% more than standard systems. The C++ CDM modulator, ultra-narrow-linewidth tunable C++ LASER micro-ITLA (integrated tunable laser assembly) and 64Gbaud C++ ICR receiver are combined in NeoPhotonics’ C++ CFP2-DCO transceiver, which is claimed to be the first pluggable transceiver module able to deliver as much as 34 Terabits of capacity per fiber. This module can support 85 channels of 64Gbaud data at 75GHz channel spacing and effectively increases the capacity of an optical fiber by as much as 50% over standard systems at comparable distances.
“The HB-CDM is based on our indium phosphide photonic integration platform and delivers the high performance for demanding applications,” says chairman & CEO Tim Jenks. “Combined with our silicon photonics integration platform we can provide customers with the optimized solutions to meet their network requirements for the highest speeds and at volume scale,” he concludes.
