Showing posts with label 400ZR. Show all posts
Showing posts with label 400ZR. Show all posts

Tuesday, July 28, 2020

NeoPhotonics and Inphi show 400ZR interoperability

Inphi and NeoPhotonics have completed the first interoperability demonstration of OIF 400ZR Implementation Agreement compliant coherent transceivers, operating successfully across the C-Band over 120km of optical fiber.

Transceiver pairs consisting of Inphi's COLORZ II QSFP-DD with its Canopus 7nm Coherent DSP and NeoPhotonics 400ZR ClearLight OSFP were successfully linked. Both 400ZR coherent optics transceivers carried error-free traffic over a typical data center interconnect (DCI) link configuration (amplified over 120km of fiber) at several wavelengths across the C-Band using Arista 7060 data center switches.

The successful interoperation of NeoPhotonics and Inphi 400ZR transceivers demonstrates the availability of interoperable coherent transceivers for the 400ZR ecosystem, a key step in enabling the next generation of DCI links. 400ZR pluggable transceiver modules significantly reduce the cost and power consumption of DCIs by eliminating the transport network equipment layer.

“We are very excited about the successful interoperable demonstration with NeoPhotonics to bring pluggable 400G coherent optics into the data center,” said Josef Berger, AVP of Marketing, Optical Interconnect at Inphi. “This demonstration proves the readiness to deliver the flexibility of high bandwidth DWDM connectivity between data centers with the ability to rapidly scale capacity and meet our customers’ demands for standards-based pluggable coherent solutions.”

“NeoPhotonics has worked closely with Inphi to combine their Canopus™ DSP with our high-performance laser and coherent optics into a standards-based ClearLight OSFP and QSFP-DD transceiver modules that can meet the needs of our hyper-scale customers,” said Marc Stiller, Vice President of Coherent Modules for NeoPhotonics. “Supporting the interoperable CFEC standard, as defined by OIF, has been a critical part of our design effort, and we’re very pleased to announce this milestone as we continue to work with customers to implement this game-changing technology.”


OIF publishes 400ZR implementation agreeement

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.

NeoPhotonics samples 400ZR OSFP coherent transceiver

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 OSFP transceiver can be plugged directly into switches and router, simplifying data center interconnect (DCI) networks by eliminating a layer of network equipment and a set of short reach client-side transceivers. The new OSFP module is capable of tuning to 75 GHz or 100GHz spaced wavelength channels, as specified in the OIF agreement, and operates in 400ZR mode for Cloud DCI applications.  For longer metro reaches, the module  is designed to support 400ZR+ modes.

This ClearLight OSFP module can also be optionally provisioned to tune over the entire “Super C-Band”, or up to 6.4 Terahertz, increasing the capacity of an optical fiber by up to 50% over standard implementations.  NeoPhotonics provides arrayed waveguide gratings for multiplexing and de-multiplexing with 75GHz and 100GHz wavelength channel spacings, supporting 85 and 64 channels respectively, with filter responses optimized for high baud rate coherent signals.


Inphi samples first 400ZR QSFP-DD transceiver

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 active alignment, using traditional optics
  • Low power, high performance, 7nm CMOS-based coherent DSP enabling 400ZR as well as extended reach 100/200/300/400G ZR+ modes
  • Integrated industry standard firmware management interface that enables full performance monitoring previously only available in DCI or transport systems directly from the optical module

 The 400ZR standard promises to lower the cost and power consumption of metro data center interconnect (DCI) by enabling switch and router companies to offer the same density for both coherent DWDM and client optics in the same chassis. This eliminates a layer of network connectivity that was previously required and supports high capacity DWDM connectivity directly from data center switches.

Inphi said its COLORZ II represents a massive increase in switch rack capacity, while reducing the power consumption by as much as 80%. COLORZ II delivers up to 14.4T of capacity per rack unit (RU), compared to 2.4T or 3.6T per RU on competing solutions, representing a 4-6 x increase in throughput per chassis.


Wednesday, July 1, 2020

OIF launches Optical Module Management Interface Survey

The OIF is conducting a survey to determine how the Common Management Interface Specification is viewed by the industry and the level of industry alignment on and support for further standardization of optical module management. The subject of module management encompasses physical interfaces, communication protocols and management applications layers.

The survey is intended to gather industry opinion regarding evolution of optical module management and the increasing consensus that the intrinsic restrictions of throughput and data organization will not scale well into the future.

“The OIF 400ZR specification covers interoperability on the network fiber and also at the host by defining the electrical interface and software management interface,” said Jeffery J. Maki, distinguished engineer II, Juniper Networks and OIF Physical Layer User Group Working Group Chair. “All of this is done to drive a true multi-sourcing opportunity for the module. Beyond 400ZR, support of the software management interface is an area OIF would like to continue to address and seeks, through the use of a survey, to gauge industry interest and the potential solution approach.”

The survey is available now and open to all who can act as a stakeholder and represent their company’s viewpoint – module vendors, system vendors, and network operators. Multiple responses per company are also allowed. Responses will be collated anonymously and then evaluated by a dedicated survey evaluation team.

OIF will hold a public webinar on Thursday, July 30, 2020 at 7am PDT to announce the results of the survey. Visit the survey webpage to download the survey and for information on the survey deadline, where to submit answers and how to register for the webinar.

https://www.oiforum.com/technical-work/optical-module-management-interface-survey/

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, or behaviors, as needed.”

The C-CMIS IA provides register definition for coherent modules in pages and parameters that were previously reserved. Users that have previously implemented software to manage optical modules using CMIS will be able to quickly add support for these coherent pages and parameters. This release, which augments the existing CMIS specification which focused on addressing direct detect client optics, is targeted at the 400ZR application.

The technology and complexity of coherent modules requires additional monitoring parameters for use in field applications. This additional monitoring is primarily focused on Forward Error Correction (FEC) monitoring and optical/analog monitoring including items like Chromatic Dispersion, Differential Group Delay and Electrical Signal to Noise Ratio (eSNR). The C-CMIS IA provides specifications to monitor the standard parameters in a normative manner while taking advantage of the flexibility of the CMIS specification to monitor any additional proprietary parameters.

“The current IA is focused on supporting the OIF 400ZR IA, which supports a single data path with eight-lane host electrical interface for a 400GBASE-R PCS signal and a single-lane 400G coherent media interface (with a new signal format called 400ZR),” explained Betty. “However, we expect future versions to include more complex Metro modules and may even extend these management features to other form factors.”

Thursday, June 18, 2020

NeoPhotonics demos 90 km 400ZR in 75 GHz DWDM channels

NeoPhotonics has demonstrated transmission of 400Gbps data over data center interconnect (DCI) ZR distances in a 75 GHz spaced Dense Wavelength Division Multiplexing (DWDM) channel.

NeoPhotonics said its demonstration achieved two milestones using its interoperable pluggable 400ZR coherent modules and its specially designed athermal arrayed waveguide grating (AWG) multiplexers (MUX) and de-multiplexers (DMUX).

  • First, data rate per channel increases from today’s non-interoperable 100Gbps direct-detect transceivers to 400Gbps interoperable coherent 400ZR modules. 
  • Second, the current DWDM infrastructure can be increased from 32 channels of 100 GHz-spaced DWDM signals to 64 channels of 75 GHz-spaced DWDM signals. The total DCI fiber capacity can thus be increased from 3.2 Tb/s (100Gb/s/ch. x 32 ch.) to 25.6 Tb/s (400Gb/s/ch. x 64 ch.), which is a total capacity increase of 800 percent.

NeoPhotonics technology overcomes multiple challenges to transporting 400ZR signals in 75 GHz-spaced DWDM channels. The 400ZR signal utilizes an approximately 60 Gbaud symbol rate and 16 QAM modulation, resulting in a broader transmitting signal spectrum compared to that of a standard 100 Gb/s coherent or PAM4 signals. Furthermore, it is recognized that the center frequencies of the lasers, MUX and DMUX will all drift due to temperature changes and aging. Consequently, as the channel spacing is reduced from 100GHz to 75GHz, adjacent channel interference (ACI) becomes more critical, and can potentially degrade the optical signal-to-noise ratio of 400ZR signals.

The filters used in NeoPhotonics MUX and DMUX units are designed to limit ACI while at the same time having a stable center frequency against extreme temperatures and aging. The optical signal spectrum of the pluggable 400ZR transmitter is very important for two reasons. First, the spectrum should not be too wide, as that would result in “spillover energy” impacting its neighbor DWDM channels. Second, it also cannot be too narrow, as that would degrade the signal quality or even recoverability, especially after the MUX and DMUX filtering.

NeoPhotonics has demonstrated end-to-end 90km DCI links using three in-house 400ZR pluggable transceivers with their tunable laser frequencies tuned to 75GHz spaced channels, and a pair of passive 75GHz-spaced DWDM MUX and DMUX modules designed specifically for this application. The optical signal-to-noise ratio (OSNR) penalty due to the presence of the MUX and DMUX and the worst-case frequency drifts of the lasers, as well as the MUX and DMUX filters, is less than 1dB. The worst-case component frequency drifts were applied to emulate the operating conditions for aging and extreme temperatures.

“The combination of compact 400ZR silicon photonics-based pluggable coherent transceiver modules with specially designed 75 GHz channel spaced multiplexers and de-multiplexers can greatly increase the bandwidth capacity of optical fibers in a DCI application and consequently greatly decrease the cost per bit,” said Tim Jenks, Chairman and CEO of NeoPhotonics. “These 400ZR coherent techniques pack 400Gbps of data into a 75 GHz wide spectral channel, placing stringent requirements on the multiplexers and de-multiplexers. We are uniquely able to meet these requirements because we do both design and fabrication of planar lightwave circuits and we have 20 years of experience addressing the most challenging MUX/DMUX applications,” concluded Mr. Jenks.

https://www.neophotonics.com/press-releases/?newsId=11856

Wednesday, April 29, 2020

OIF publishes 400ZR implementation agreeement

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...


Tuesday, March 10, 2020

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 variable-gain amplification. The OSFP-LS supports up to 8 DWDM wavelengths, or 3.2 Tbps per fiber pair.

“The POLS platform is a revolution in datacenter interconnects,” said Martin Hull, VP of Platform Products at Arista Networks. “Just as a 400ZR transceiver collapses the 400G transponder linecard functionality into a pluggable module, so does the OSFP-LS in relation to an optical line system linecard. The plug-and-play functionality of the OSFP-LS will enable our switch customers to deploy them quite easily and cost-efficiently as they migrate to 400ZR.”

“The POLS platform leverages significant breakthroughs in the areas of miniaturizing optical components for amplification and wavelength management, while simultaneously improving performance and reducing power consumption,” said Dr. Sanjai Parthasarathi, Chief Marketing Officer, II-VI Incorporated. “The POLS platform is enabled by II-VI’s vertically integrated portfolio of best-in-class components in the industry, including our uncooled, highly compact, 3-pin micropump, the smallest of its kind on the market.”

Thursday, March 5, 2020

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 modules are based on Acacia's Greylock 7nm DSP, its 3rd generation of coherent DSP. The company is pursuing a 3D Siliconization approach that allows for high volume manufacturing processes.

OpenZR represents the combination of 400ZR and the Open ROADM MSA. It targets metro regional DCI applications.

Acacia said 400G pluggable modules represent a key architectural change in high-bandwidth data center interconnects because they can be plugged directly into switches and routers offering the same density for both coherent DWDM and client optics in the same chassis.

“We’re excited to be successfully passing traffic in the lab with the Acacia 400G-OSFP-ZR module in our 7000 Series switches and routers,” said Hacene Chaouch, Distinguished Engineer at Arista Networks. “400ZR is critical to meeting customer demand for growing data center interconnect bandwidth and we believe the thermal and optical performance of Acacia’s coherent platform in the OSFP form factor will provide network operators with a very reliable and power efficient solution.”

“Acacia is reinforcing its coherent pluggable leadership by sampling 400G technology in multiple form factors,” said Andrew Schmitt, Directing Analyst at Cignal AI. “Interoperable 400G solutions have the potential to transform cloud DCI and traditional operator architectures and create new applications for coherent optics at the edge of the network.”

Acacia also noted the following company milestones
> 200,000 coherent silicon photonic integrated circuits
> 400,000 coherent DSP ports
> 125,000 pluggable DCO modules