＜400G QSFP56-DD ZR/ZR+ Transceiver＞
＜400G OSFP ZR/ZR+ Transceiver＞
In recent years, internet content providers and cloud operators have built hyperscale data centers by seamlessly interconnecting multiple data centers around large metropolitan areas. This led to a growing demand for coherent pluggable WDM transceivers that are used widely today in data center interconnects (DCI) platforms and directly installed in routers and switches. These transceivers are capable of WDM transmission in QSFP56-DD and OSFP form factors that are as compact as the popular 100GE QSFP28 transceiver. To respond quickly to these demands, the OIF, a standardization organization, has specified the OIF Implementation Agreement 400ZR (*1) that supports only DCI edge applications up to 120km.
The 400G ZR transceiver ensures interoperability with other manufacturers’ transceivers by using the CFEC, which complies with the OIF Implementation Agreement 400ZR. Error free transmission of data traffic has been demonstrated using FOC’s 400G ZR transceiver on data center optimized equipment such as Arista’s 7060/7280R3 400GE switches and multi-vendor 400G ZR interoperability testing is currently under preparation.
The OpenZR+ MSA (*2), a combination of 400ZR and OpenROADM (*3) elements, is now underway to support hyperscale DCI links over 120km while maintaining the same QSFP56-DD/OSFP form factors as 400ZR.
The Open ROADM MSA is moving forward with standardization focused on carrier applications and the specifications of flexible coherent pluggable transceivers that support additional specifications not in 400ZR, such as high optical output power, multi-rate, multiplexing function, and additional protocols such as OTN.
The OpenZR+ MSA aims to expand the transmission distance by using higher performance OFEC (Open Forward Error Correction) from the OpenROADM standard, support multi-rate Ethernet, and enable the selection of the optimum transmission distance and capacity for user needs by supporting adjustable 100G, 200G, 300G, and 400G line side transport links. Separately, the Open ROADM MSA is moving forward with standardization focused on carrier applications and the specifications of flexible coherent pluggable transceivers that support additional specifications not in 400ZR, such as high optical output power, multi-rate, multiplexing function, and additional protocols such as OTN.
The 400G ZR+ transceiver is available in the same compact QSFP56 -DD and OSFP form factors as the 400ZR. In addition, the use of OFEC, which has higher performance than the CFEC used in 400ZR, allows for a longer transmission reach and ensures the desired interoperability. NTT Electronics and Acacia Communications have successfully completed module-level interoperability testing between DSPs in 400ZR and OpenZR+ operatiing modes,using modules supplied by FOC and Acacia.(*4)
The line interface is configurable from 100GE to 400GE, enabling a wide range of transmission distances. The client interface supports 100GE to 400GE for efficient multiplexing, as shown below in a 4x100G to 400G muxponder application.
|Product||400G ZR||400G ZR+|
|Application||Edge DCI||Regional DCI|
|Standard||OIF 400ZR||OpenZR+ MSA|
FOC’s 400G coherent pluggable transceivers use a next-generation coherent platform based on 7nm CMOS process coherent DSP (Digital Signal Processor), silicon photonics integrated optical devices, and high-density packaging technology. This enables a compact size, low power consumption and low cost per bit rate.
Fujitsu Optical Components Limited
Fujitsu Optical Components is a leading global supplier of the most advanced, high performance optical component solutions for high-speed optical networking applications (i.e.-backbone networks, metro networks and data center interconnects). Our product line-up includes 100G and beyond Coherent Transceivers, 100G/400G Client Transceivers, 100G/400G LN Modulators and 100G/400G Coherent Receivers. For additional information, visit http://www.fujitsu.com/jp/foc/en/.
All other company or product names mentioned herein are trademarks or registered trademarks of their respective owners. Information provided in this press release is accurate at time of publication and is subject to change without advance notice.
日付: 09 October, 2020