OIF published the Implementation Agreement (IA) for a low-cost, 400ZR coherent optical interface.
OIF launched the 400ZR project in response to requests from large-scale data center operators and their suppliers for an interoperable coherent interface that transports 400 Gigabit Ethernet over longer distances. Traditional network operators also became interested in 400ZR for their metro needs. Based on their different requirements, OIF developed specs and tweaked the channel requirements so the IA would benefit both data center and network operators. While developing the IA, OIF collaborated closely with other standards bodies.
The 400ZR IA addresses two applications:
- Amplified, point-to-point DWDM links with reaches of 120 km or less
- Unamplified, single wavelength links with a loss budget of 11dB
The IA aims to enable interoperable, cost-effective, 400Gbps implementations based on single-carrier coherent DP-16QAM modulation, low-power DSPs supporting absolute (Non-Differential) phase encoding/decoding, and a Concatenated FEC (C-FEC) with a post-FEC error floor <1 .0e-15.="" 400gbase-r="" 400zr="" a="" as="" operates="" p="" phy.="">
No restriction on the physical form factor is implied by the IA (QSFP-DD, OSFP, COBO, CFP2, CFP8), but the specifications target a pluggable DCO architecture with port densities equivalent to grey client optics.
“As a member driven organization, OIF’s work toward the 400ZR IA was the combination of significant interest from network operator members and component supplier members responding to that demand,” said Karl Gass, OIF Physical and Link Layer (PLL) Working Group – Optical Vice Chair. “The 400ZR IA is the culmination of this significant effort by OIF member companies and is critical for managing cost and driving interoperability for the industry.”
“400ZR is a key enabler of Microsoft’s regional architecture for the 400G generation,” said Mark Filer, Principal Optical Engineer in Microsoft Azure. “The creation of a multi-vendor, interoperable coherent interface to meet these needs would not have been possible without the extensive work and cooperation of OIF members and leadership.”
“The 400ZR IA is an example of OIF’s ability to quickly and effectively mobilize opinion and to bring interoperability to a rapidly evolving world,” said Andrew Schmitt, Directing Analyst at Cignal AI. “The 400ZR specification is the organization’s first step to establish broader interoperability among coherent transport interfaces.”
http://www.oiforum.com
II-VI launches pluggable Optical Line Subsystem for 400ZR
II‐VI introduced a pluggable optical line subsystem (POLS) platform to enable the 400ZR coherent transceivesr ecosystem for next-generation datacenter interconnects (DCIs). II-VI’s initial product from the POLS platform is the OSFP-LS, designed in the very compact OSFP form factor, that plugs directly into a datacenter interconnect (DCI) switch port and enables full-duplex multi-channel 400ZR transport, including multiplexing, demultiplexing, and...
Acacia samples 400ZR, OpenZR+, Open ROADM MSA
Acacia Communications has begun sampling multiple variants in its family of 400G pluggable optical transceiver modules, including 400ZR, OpenZR+, and Open ROADM MSA. Volume production is expected in the second half of 2020. Acacia’s 400G pluggable module family features an expansive list of interoperability solutions in QSFP-DD, OSFP and CFP2-DCO pluggable form factors for cloud data center interconnects (DCIs) and service provider networks. The...
OIF's Coherent Common Management Interface Spec supports 400ZR
OIF has completed the Coherent Common Management Interface Specification (C-CMIS) Implementation Agreement (IA), which serves as an extension to the CMIS (QSFP-DD/OSFP/COBO) management specification, specifically targeting DCO modules. “The C-CMIS IA is an important part of the developing 400ZR ecosystem,” said Ian Betty, Ciena and OIF Board Member. “It defines additional management registers, and monitors, together with new functionality, mechanisms,...
NeoPhotonics began sampling its new 400ZR ClearLight OSFP transceiver to a leading cloud -related customer. The new transceiver utilizes NeoPhotonics Silicon Photonics Coherent Optical Subassembly (COSA) and low power consumption, ultra-narrow linewidth Nano-ITLA tunable laser, combined with the latest generation of 7 nm DSP, to provide full 400ZR transmission in a standard data center OSFP form factor. NeoPhotonics said its new 400ZR ClearLight...
Inphi has begun sampling its COLORZ II 400ZR QSFP-DD pluggable coherent transceiver for cloud data center interconnects (DCIs) to major cloud operators and OEMs. Inphi cites several industry firsts for its COLORZ II 400ZR QSFP-DD: 400G single-chip, coherent Silicon Photonics Integrated Circuit (PIC) that includes all transmit and receive functions Innovative, low cost, passive alignment of fiber to the PIC that eliminates the complicated...
