Sumitomo Electric introduces ultra-low loss, multi-core fiber

Sept. 24, 2023
The company will start sales of the new fiber in October 2023.

Sumitomo Electric is responding to the insatiable demand for bandwidth-hungry services such as 5G mobile large-scale data center traffic with its new ultra-low loss, multi-core fiber 2C Z-PLUS Fiber™ ULL.

To expand transmission capacities further, multi-core fiber (MCF) with plural cores in a single fiber has been actively studied and highly anticipated as a next-generation fiber.

By applying its MCF R&D activities and low-loss fiber technologies, Sumitomo Electric has developed a mass-production version of ultra-low loss MCF 2C Z-PLUS Fiber™ ULL. While a conventional fiber has a single core in which optical signals propagate, 2C Z-PLUS Fiber™ ULL, as the name suggests, has two cores in the exact outer dimensions as a conventional fiber. The transmission capacity through the 2C Z-PLUS Fiber™ ULL can be expanded twofold compared to a traditional single-core fiber because the two cores can carry optical signals independently.

With a transmission loss of typically 0.158 dB/km at 1550 nm, the new fiber can be considered an ultra-low loss fiber (0.16 dB/km or less) applicable to transoceanic submarine systems. A small counter-propagating inter-core crosstalk of -43 dB or less is guaranteed. Also, 2C Z-PLUS Fiber™ ULL has equal outer diameters to a conventional single-core fiber (125 μm and 250 μm in glass and coating areas, respectively) and holds environmental reliability and mechanical stability.

Sumitomo’s 2C Z-PLUS Fiber™ ULL can be used in a broad range of applications:

・Submarine network systems, from regional to transoceanic distance

・Long-haul, high-capacity terrestrial transmission

・Inter datacenter networks

・Ultra-low loss required applications: quantum cryptography communications and seismic and fire detection sensor networks.

For related articles, visit the Optical Tech Topic Center.

For more information on optical components and suppliers, visit the Lightwave Buyer’s Guide.

To stay abreast of optical communications technology, subscribe to Lightwave’s Enabling Technologies Newsletter.