Telstra and Infinera announced the successful trial of a range of next-generation super-channel coherent modulation technologies on Telstra's 9,000 km Endeavour Trans-Pacific subsea for increased reach and higher capacity .The trial leveraged Infinera's Advanced Coherent Toolkit (ACT) for super-channels that can provide around a 20 percent increase in reach compared to single carrier transmission, claims Infinera.
Both companies also announced recently the successfully demonstration of PM-8QAM across submarine cable between Japan and South Korea. PM-8QAM is designed to deliver a 50% increase in capacity compared to the most common coherent modulation technique, PM-QPSK, in a typical installation under the same conditions, according to Infinera.
Scott Jackson, VP of Infinera's Subsea Business Group
The comprehensive modulation and compensation techniques in our Advanced Coherent Toolkit enable individual carriers and subcarriers in the super-channel to maximize the overall reach and capacity of the customer's fiber.
Andy Lumsden, Head of Network Services, Telstra Global Enterprise and Services
The flexibility of PIC-based super-channels has proven to be a major advantage in subsea operations, and the addition of next generation coherent processing provides an important capacity boost.
