#United States #Plano #Ribbon Communications #JUNO Cable #Seren Juno

Breakthrough in Optical Transmission

In a remarkable feat of engineering and technology, Ribbon Communications Inc. announced a significant achievement on November 12, 2025. The company has successfully conducted a field trial demonstrating 20Terabits per second (Tbps) optical transmission over the 10,000 km JUNO trans-Pacific submarine cable, owned and operated by Seren Juno Network. This development not only marks a pivotal moment in long-haul optical networking but also positions the JUNO cable system to become the largest of its kind between the United States and Japan.

The Significance of the JUNO Cable System

The JUNO cable aims to meet the surging demand for high-speed connectivity across the Pacific Ocean, boasting a robust total capacity exceeding 350Tbps through its 20 fiber pairs. This immense capacity is critical in an age where digital communication and data transfer are growing exponentially.

During the trial, Ribbon utilized its advanced Apollo 9408 transponder, incorporating cutting-edge 5nm 140GBaud technology, alongside the Apollo 9608 platform, which integrates specialized functions for submarine-grade optical line systems. This combination allowed for flexible modulation from 400Gbps to 1.2Tbps per wavelength, ensuring the technology adapts to the unique conditions of the underwater cable.

Sam Bucci, EVP and COO of Ribbon, commented on the implications of this milestone, stating, _"This confirms the feasibility of transmitting 20 terabits per second per fiber pair, showcasing the scalability of our solutions for next-generation global connectivity."_

Seren Juno's Aspirations

Yoshio Sato, CEO of Seren Juno, expressed confidence in their new strategic direction, saying, _"Achieving results comparable to industry leaders not only boosts our reputation but opens new avenues for innovation in our operations."_ This robust collaboration between industry giants signifies a joint commitment to advance technological fronts in global communication.

Ribbon Communications: A Leader in Innovation

As a global pioneer in real-time communication technologies and IP optical networking solutions, Ribbon Communications evolves continuously to empower service providers, enterprises, and critical infrastructure sectors. Their strategic initiatives focus on modernizing networks and enhancing overall business outcomes, ensuring customers remain competitive in the dynamic digital landscape.

Ribbon's end-to-end portfolio leverages cloud-native architectures, automation, and advanced security, delivering unparalleled value while maintaining a strong commitment to Environmental, Social, and Governance (ESG) principles. Their annual Sustainability Report evidences this commitment, emphasizing their impact on sustainable practices in the tech sphere.

Conclusion

The successful field trial of the JUNO submarine cable not only sets a new benchmark for optical transmission capabilities but also highlights the transformative potential of collaborative innovation in telecommunications. As the digital economy continues to expand, developments such as these will play a crucial role in supporting the global demand for high-speed internet access.

For more information about Ribbon Communications and the JUNO project, visit rbbn.com and seren-juno.com.