NTT, partners, unveil plans for JUNO trans-Pacific submarine cable network

July 12, 2022

JUNO will be designed to provide as much as 350 Tbps between Japan and the U.S. The partners expect the submarine cable to be ready for service by the end of 2024.

Stephen Hardy

NTT Ltd. Japan Corp., Mitsui & Co., Ltd., PC Landing Corp., and JA Mitsui Leasing, Ltd. say they will back the deployment and operation of a new trans-Pacific submarine cable network, to be called JUNO. The companies jointly formed Seren Juno Network Co., Ltd. for the purpose. JUNO will be designed to provide as much as 350 Tbps between Japan and the U.S. The partners expect the submarine cable to be ready for service by the end of 2024.

JUNO will run approximately 10,000 km and land in Chiba prefecture and Mie prefecture in Japan and a currently unspecified location in California. The double landing in Japan will add security and resilience in the face of what can be turbulent conditions along the coastal areas of Japan, the companies say.

The undersea cable system will leverage space-division multiplexing (SDM) technology across 20 optical fiber pairs. The transmission technology will enable flexible capacity adaption in response to changes in customer requirements.

“With the rapid growth of the global digital economy and an increasing demand for cloud solutions and lower latency, the undersea internet cable sector is quickly becoming more critical to global internet infrastructure,” said Takanobu Maeda, President and Chief Executive Officer, NTT Ltd. Japan Corp. “This new subsea cable is the latest joint effort NTT has led in a long and proud history of providing reliable global internet infrastructure.”

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About the Author

Stephen Hardy | Editorial Director and Associate Publisher, Lightwave

Stephen Hardy is editorial director and associate publisher of Lightwave and Broadband Technology Report, part of the Lighting & Technology Group at Endeavor Business Media. Stephen is responsible for establishing and executing editorial strategy across the both brands’ websites, email newsletters, events, and other information products. He has covered the fiber-optics space for more than 20 years, and communications and technology for more than 35 years. During his tenure, Lightwave has received awards from Folio: and the American Society of Business Press Editors (ASBPE) for editorial excellence. Prior to joining Lightwave in 1997, Stephen worked for Telecommunications magazine and the Journal of Electronic Defense.

Stephen has moderated panels at numerous events, including the Optica Executive Forum, ECOC, and SCTE Cable-Tec Expo. He also is program director for the Lightwave Innovation Reviews and the Diamond Technology Reviews.

He has written numerous articles in all aspects of optical communications and fiber-optic networks, including fiber to the home (FTTH), PON, optical components, DWDM, fiber cables, packet optical transport, optical transceivers, lasers, fiber optic testing, and more.

You can connect with Stephen on LinkedIn as well as Twitter.