Showing posts with label Fiber. Show all posts
Showing posts with label Fiber. Show all posts

Sunday, June 13, 2021

Sumitomo announces Expanded Beam multi-fiber connector

Sumitomo Electric Industries unveiled its new "AirEB", a multi-fiber connector with an expanded beam that has optical performance tolerant to the contamination on the connector mating faces.

The new AirEB connector has a lens structure at the end face of the connector, which expands the optical beam to be tolerant of foreign dust particles and keeps optical performance good with less frequent cleaning, or even without cleaning.

The company cites the following advantages of its AirEB connector:

  • No need of the frequent cleaning, cleaning with ease.
  • An expanded beam can be tolerant of the contaminations on the end face.
  • A small gap between mated lenses prevent the particles from sticking to the end face.
  • Mass production friendly with no special equipment required for production.
  • The polishing process required for a conventional MPO is not needed.
  • All optics in a straight path can make the alignment easy.

https://sumitomoelectric.com/publications/pr-news-articles/2021/06/sumitomo-electric-develops-airebtm-multi-fiber-connector

Wednesday, June 9, 2021

Corning showcases fiber innovations

Corning is showcasing its new fiber and cable innovations at this week's virtual OFC. Highlights:

  • MiniXtend cable line. This 192-fiber micro cable with binderless FastAccess® technology will leverage Corning’s new SMF-28 Contour fiber with 190-micron outer diameter. The compact MiniXtend XD cable provides installers with greater flexibility in tighter spces without sacrificing fiber density or deployment speed – enabling 33% more fibers per duct compared to legacy MiniXtend HD cable and 70% faster cable access compared to traditional cable designs.
  • RocketRibbon cable portfolio, including the world’s first armored cables with Corning’s FastAccess technology – offering ease of installation coupled with innovative ribbon protection. The innovation is offered in 288-fiber, 432-fiber, and 864-fiber variations. The compact designs enable up to twice as much fiber per duct and 60% faster cable access than existing solutions, while maintaining the benefits of a backward-compatible and proven industry-standard ribbon design.
  • SMF-28 ULL fiber, Corning’s newest long-haul terrestrial fiber, features advanced bend capability and designed for the most challenging long-haul and high-data-rate networks. Compared to standard single-mode fibers, it enables up to twice the capacity and reach at data rates of 800G and greater, at a lower cost per bit.
  • The latest innovations in Corning’s data center portfolio, including Corning CleanAdvantage Technology and MTP PRO Connecter with Push-Pull boot, which provide high-performance data centers with faster, cost-effective deployments and a streamlined path to revenue growth.
  • Evolv Hardened Connectivity Solutions with Pushlok Technology, designed to simplify fiber deployment for all types of communications networks, enabling 5G-ready connectivity in the most congested of environments.
  • Everon Network Solutions, the complete enterprise-grade network solution built on optical technology, delivering reduced costs at installation and over the lifetime of a building. The Everon portfolio includes solutions for the fiber backbone, cellular connectivity, and 5G-ready capabilities all the way to the edge of the network, giving building operators the flexibility and scale to design for the future.
  • Corning’s newest solutions for original equipment manufacturers, showcasing expertise in bringing high-density optical connectivity directly to the chip.

“Reliable, high-speed connectivity has never been more vital – from access networks, to cloud data centers, to smart buildings, to the promise of 5G,” said Dr. Bernhard Deutsch, vice president and general manager, Corning Optical Fiber and Cable. “Optical fiber, cable, and connectivity are at the center of all these technologies. As bandwidth demands accelerate, Corning remains at the forefront of innovation for every segment of the network.”


Corning’s experts will offer insights on industry trends during workshops throughout the conference. Topics including co-packaged optics; the next 10 years of optical networks; power efficiency in submarine fiber systems; and the past, present, and future of fiber innovation.  

Sunday, June 6, 2021

Sumitomo develops AI-driven active clad alignment fusion splicer

Sumitomo Electric Industries introduced a handheld fiber splicer that uses artificial intelligence to significantly improve splicing efficiency and accuracy regardless of operational condition and user skill.

The new T-502S slicer provides accurate estimated loss by analyzing the fiber image through high-quality microscopes during splicing.

The splicer also features an industry-first fiber type detection function tha allows the unit to distinguish between MMF and SMF fiber types and ensure use of the correct splice program.

https://sumitomoelectric.com/publications/pr-news-articles/2021/06/sumitomo-electric-launches-t-502s-worlds-first-ai-programmed

Thursday, June 3, 2021

Corning intros bendable SMF-28 optical fiber

Corning introduced its SMF-28 Contour optical fiber featuring enhanced bend resilience, network compatibility, and industry-leading low loss characteristics.

Highlights:

  • Superior bendability designed to reduce the impact of errors during installation and optimize reach in densely cabled environments where 5G networks are being deployed. SMF-28 Contour fiber is an ITU-T G.657.A2 fiber that has 10 times the macrobend resilience of G.652.D fibers and seven times the macrobend resilience of G.657.A1 fibers. The associated increase in microbend resilience enables dense, high-fiber-count cables needed to meet the demands of future high-capacity networks.
  • Exceptional compatibility with legacy networks while providing superior bend protection, which can mean up to 50% faster installation by minimizing corrective splice-loss work. Other G.657.A2 fibers also provide bend protection but with a compromised, lower mode field diameter. SMF-28 Contour fiber does not compromise, providing both G.657.A2 bend protection and a matched 9.2-micron mode field diameter in the same product.
  • Wide spectrum and industry-leading low-loss transmission across all the wavelengths that constitute the communication systems of today and tomorrow. First, SMF-28 Contour fiber’s industry-leading low attenuation delivers 10% longer reach in all networks and up to 20% wider access-network coverage. Second, SMF-28 Contour fiber’s bend loss protection enables up to twice the network reach in new long-wavelength FTTH systems. Together, these features enable larger FTTH subscriber areas and greater revenue potential.

SMF-28 Contour fiber is available in a standard 242-micron configuration and a smaller 190-micron configuration. 

Corning says smaller-diameter designs are increasingly important because while bandwidth demands have grown, the space available for network infrastructure has not. The 190-micron version of SMF-28 Contour fiber enables smaller cables with higher fiber counts – maximizing use of existing infrastructure

“Corning’s revolutionary SMF-28 Contour optical fiber is the latest example of our ability to solve tough industry challenges,” said Dr. Bernhard Deutsch, vice president and general manager, Corning Optical Fiber and Cable. “Operators today are looking to deploy future-ready networks as efficiently as possible, often in densely cabled environments, and we’ve designed this new product to answer those needs. Fifty years after Corning scientists invented the first low-loss optical fiber, we’re proud to help drive a new era of industry growth and network transformation.”

Tuesday, May 18, 2021

Optical Cable Corp. selected for DoD project

Optical Cable Corporation, which supplies a broad range of fiber optic and copper data communication cabling and connectivity solutions, has been awarded a contract to supply certain of OCC's proprietary products to a major defense contractor for the U.S. Department of Defense. OCC has received a purchase order totaling more than $1.0 million.

OCC expects to begin manufacturing the products in the fiscal third quarter of 2021 and continuing throughout fiscal year 2021. Further details regarding the contract were not disclosed.

Neil Wilkin, President and Chief Executive Officer of OCC, said, "OCC is proud of its long history designing and manufacturing products for the U.S. military. Once again, we are humbled to do our part by leveraging our innovative technologies and substantial capabilities to supply and support the brave men and women protecting our freedom. We are fortunate to count a number of veterans among our dedicated team, and all of us look forward to delivering the products and solutions on which our military relies and for which OCC is known."

Thursday, March 18, 2021

NEC qualifies subsea repeaters and cables for 24 fiber pairs

 NEC and its subsidiary OCC Corporation have completed full qualification of subsea repeaters and optical cable containing up to 24 fiber pairs (FPs) (48 fibers). The new qualification is a 50% improvement in fiber count over the 16 fiber pair systems generally available today. 

Only minor modifications were needed to NEC's existing repeater and cable designs. Keeping NEC's quadruple pump redundancy in the repeater (established more than 10 years ago) and maintaining OCC's outstanding cabling performance has resulted in cabled attenuations lower than 0.150dB/km. Low attenuation is critical to achieve large spectral efficiency as well as lower power consumption.

NEC said the qualification will allow for the construction of subsea telecom cables with superior traffic capacity while reducing the cost per bit of the wet plant. The development is fully in line with SDM (Space Division Multiplexing) system architectures. 

"As global demands for capacity and FP flexibility continue to soar, NEC is committed to helping our customers to build up their subsea networks with large spectral efficiency, lower power consumption and large-scale subsea connectivity," said Yoshihisa Inada, Deputy General Manager and Head of Subsea Technology Development at NEC's Submarine Network Division.  "We continue to evaluate multiple technical options to further increase capacity and reduce the cost/bit of the networks."

OCC's 24 fiber pair cable can be manufactured using a wide range of existing optical fibers, according to the needs of each new cable system. Each fiber can be visually identified using a field-proven combination of ring marking and conventional fiber coloring, first introduced in 2013. Furthermore, in OCC cable, the fiber's transmission performance is completely unaffected, either by the fiber marking or cabling processes.

"We have concluded that the use of our fibers in OCC's 24 pair cable results in a cabled attenuation matching the nominal value. We are confident that our ultra-low-loss fibers can contribute to achieve large capacity, high spectral efficiency and low power consumption in transoceanic networks," said Dr. Masashi Onishi, General Manager at Optical Fiber and Cable division of Sumitomo Electric Industries Ltd.

"To support growing bandwidth, next generation subsea systems will offer Petabit-scale transmission. To achieve the required performance, cabling processes must capture the advantaged optical attenuation and large effective area of our ultra-low-loss fibers. OCC's cabling process for 24 fiber pairs works with our high quality fiber to meet the challenge," said Dr. Bernhard Deutsch, VP & GM, Optical Fiber & Cable, Corning Incorporated.

NEC targets subsea cables to 24 fiber pairs and beyond

NEC and its subsidiary OCC Corporation completed full qualification of subsea repeaters and optical cable containing up to 20 fiber pairs (40 fibers). This represents a 25% improvement in fiber count over 16 fiber pair systems previously built by NEC. NEC said it achieved this milestone with only minor modifications to its proven repeater and cable designs. This was done by optimizing key repeater components, and by proving that its existing cable...

Monday, October 26, 2020

Corning intros miniaturized fiber terminals and connectors

Corning introduced a new line of miniaturized terminals and connectors for simplifying fiber deployments. The new Evolv Hardened Connectivity Solutions with Pushlok Technology are designed for space-constrained environments, including FTTH deployments and 5G small cell applications. 

The Pushlok hardened connectors are half the size of existing offerings, connecting to terminals that are up to four times smaller. In addition, Pushlok Technology enables simple one-handed drop installation, with tactile and audible feedback.

The compact, easy-to-install Evolv terminals can be deployed in the ground, on a pole or facade, or on a strand. Corning estimates operators can save up to $500 per terminal location by shrinking handhole and pedestal size, reusing existing infrastructure, reducing pole-attachment fees and streamlining permitting.

“With the Evolv HC Solutions and Pushlok Technology, Corning is working with our customers to reduce barriers in deploying 5G-ready networks,” said Bob Whitman, vice president of market development, Carrier Networks, Corning Optical Communications. “More and more often, installers must deploy fiber in tight spaces not originally designed for today’s density of connections – and all types of network operators are looking to deploy more quickly and economically. That’s why they’ll find our miniaturized solutions so valuable, wherever they need to go.”

“These optical solutions are a prime example of Corning’s innovation portfolio in action,” Whitman said. “We’re leveraging our unparalleled expertise in optical physics and precision forming to co-innovate with our customers to solve their toughest technology problems – creating another competitive advantage that will help Corning deliver for customers and outperform the passive optical market over time.”

Thursday, September 24, 2020

European Commission investigates Chinese dumping of fiber cables

  The European Commission is launching an investigation into the alleged dumping of single mode optical fibre cables from China into the EU at below market prices.


The complaint was initiated by producers representing more than 25% of the total EU production of optical fibre cable. The complaint argues that the price of optical fibre cables in China is articially low due to distortions in the Chinese telecommunications sector by the Government of China.

https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=OJ:JOC_2020_316_R_0009&from=EN

Tuesday, January 22, 2019

OFS intros rollable fiber ribbon backbone cable

OFS introduced its R-Pack Rollable Ribbon (RR) Backbone Cable in 24, 48 and 72 fiber counts. The R-Pack RR Backbone Cable, which meets Telcordia GR409 standards for horizontal backbone applications and NFPA 202 requirements, can be used in data center, central office and Fiber-to-the-Business (FTTB) applications.

OFS said that to form a rollable ribbon, 12 (twelve) 250 micron (µm) optical fibers are connected intermittently by
matrix material to form a very flexible ribbon. This design allows the ribbons to be rolled into very tight bundles, helping to double the fiber density of a cable. These fibers can then be unrolled into preorganized ribbon packages that help to reduce fiber crossovers and speed termination. The rollable ribbons can be spliced using traditional flat ribbon splicing machines and procedures.

Benefits of rollable ribbons include efficient and cost-effective mass fusion splicing, easy individual fiber breakout and fiber alignment that aids with multi-fiber connector terminations.

"This unique cable design combines plenum-rated materials with OFS rollable ribbons. The result is a cable that literally doubles the available fiber density in a highly-compact, robust cable that helps customers to substantially improve cable routing and save on space in demanding and congested pathways,” states Dan Hendrickson, Premises Cable Product Manager, OFS.

https://www.ofsoptics.com

Sunday, November 18, 2018

Fujikura releases 6,912 fiber count optical cable

Fujikura announced the world's highest fiber density cable -- a 6,912F Wrapping Tube Cable (WTC).

To achieve this density, the cable leverages 200 μm diameter fiber along with the company's Spider Web Ribbon (SWR) technology, which is a 12 core optical fiber ribbon.

In addition, Fujikura says the existing mass fusion splicer, jacket stripper and cleaver can be used for splicing with 200 μm SWR and 250 μm SWR.

http://www.fujikura.co.jp/eng/newsrelease/products/2058047_11777.html


Sunday, October 21, 2018

Corning cuts energy intensity of manufacturing fiber by 50%

Corning announced a big milestone in its environmental sustainability improvement program. 

The company has reduced energy intensity in its global fiber and cable manufacturing facilities by 50 percent. The improvement was achieved through technology upgrades, equipment optimization, and sharing best sustainability practices across the business. Energy intensity is a measure of kilowatt hours of energy used for each kilometer of fiber or cable manufactured. The company said technicians, engineers, and plant personnel at each of its fiber and cable facilities worldwide identified and executed energy conservation steps to reach this milestone.

“We’re proud of our manufacturing teams around the world for demonstrating Corning’s commitment to sustainability – a commitment that benefits our environment, our communities, and our employees,” said Danny Henderson, division vice president and worldwide manufacturing manager, Corning Optical Fiber and Cable. “Investments in energy-efficient upgrades to our infrastructure and processes also helps control our costs, which serves our valued customers.”

Corning said it has saved over half a billion dollars since launching its Global Energy Management program in 2006.

Sunday, September 16, 2018

Zayo wins another dark fiber contract in Europe

Zayo announced that aan international carrier has selected it for a pan-European dark fiber backbone. The name of the customer was not disclosed.

Zayo said this dark fiber project includes a nearly 3,500 route-mile network with dozens of ILA stations, connecting four major European markets. It leverages Zayo’s in-place network in the U.K. and Western Europe. The solution supports the carrier’s European expansion, providing capacity and latency advantages.

The carrier connects to Zayo’s network via subsea cables in Marseille, a strategic gateway and intercontinental aggregation point. Zayo provides diverse fiber routes from Marseille that connect to Paris, Frankfurt, London and other European markets.

Monday, September 10, 2018

Deutsche Telekom to increase fiber build-out in German business parks

Deutsche Telekom announced plans to increase its  fiber-optic build-out in German business parks next year.

A further almost 19,000 enterprises will benefit from this fourth tranche of the fiber-optic build-out to business parks. With fiber connectivity Deutsche Telekom will then offer the businesses top-speed Internet connections of up to 1 Gbps.

Deutsche Telekom said it is using micro-trenching technology for the build-out in business parks.

"The digitalization of the economy is an opportunity and a challenge for Germany. The basis for the successful implementation of this is comprehensive broadband coverage. We are aware of this, and we are accelerating fiber-optic build-out for business parks in particular. We are continuing to push forward with broadband build-out on a huge scale, including 100 business parks this year. We are now moving into the pre-marketing phase for a further 103 business parks in a fourth wave of expansion," says Hagen Rickmann, Director for Business Customers at Telekom Deutschland.

"No one in Germany is building more than Deutsche Telekom, and we don't just focus on major cities; the needs of rural areas are just as important to us. The build-out continues, and our goal for 2022 is to connect 3,000 business parks across Germany to our fiber-optic network (FTTH)," continues Rickmann.

https://www.telekom.com/en/media/media-information/archive/fiber-optic-lines-on-the-way-for-almost-19000-enterprises-538694

Saturday, April 28, 2018

NTT demos its photonic crystal fiber with high-powered lasers

NTT and Mitsubishi Heavy Industries (MHI) have demonstrated a kW class, high-power single-mode laser transmission over tens to hundreds of meters --
representing a breakthrough for laser processing technology.

The innovation leverages NTT's photonic crystal fibers (PCF) and MHI's high power laser processing technology.

NTT's photonic crystal fiber transmits light by using the confinement effect of air holes. PCF consists of silica glass and multiple air holes, and offers novel properties impossible with conventional optical fiber.

Laser processing requires the transmission of light whose power is more than 10,000 times that of conventional telecommunication light. However, maximizing the optical power and transmission distance encounters the physical limit created by optical nonlinearity. Applications include a range of infrastructure products, including in transportation, manufacturing, and precision cutting.

The achievement will be reported at the 89th lecture of Japan Laser Processing Society, which will be held at Suita Campus, Osaka University at 23-24 May 2018.

Sunday, April 8, 2018

Vertical Systems Group: U.S. Business Fiber Availability Reaches 54.8%

The availability of optical fiber connectivity to large and medium size commercial buildings in the U.S. jumped to 54.8% in 2017, based on latest research from Vertical Systems Group. As a result, the U.S. Fiber Gap has dropped to less than fifty percent (45.2%) for the first time. This annual benchmark quantifies the scope of fiber lit buildings in the U.S. with twenty or more employees. Encompassing more than two million individual business establishments, this base of commercial buildings maps directly to the addressable market for higher speed Carrier Ethernet, Cloud, Data Center, Hybrid VPN and emerging SDN-enabled services. The count does not include standalone cell towers, small cells not located in fiber lit buildings, near net buildings, buildings classified as coiled at curb or coiled in building, HFC-connected buildings, carrier central offices, residential buildings, and private or dark fiber installations.

“More commercial U.S. buildings were newly lit with fiber during 2017 than in any other year since we initiated this research in 2004. The number of net new fiber lit buildings increased across every building size segment, and most substantially for medium size sites,” said Rosemary Cochran, principal of Vertical Systems Group. “Deployments will continue to accelerate because fiber is both a strategic asset for delivery of wireline business services, as well as a necessity for enabling 5G.”

https://www.verticalsystems.com/2018/04/05/u-s-business-fiber-availability-reaches-fifty/

Sunday, March 11, 2018

Corning's RocketRibbon cable packs 3,456 fibers

Corning unveiled a new "RocketRibbon" extreme-density fiber cable for data center and carrier environments.

RocketRibbon cables deliver up to 3,456 fibers in the same diameter as existing central and stranded tube cables. Corning is using a proprietary manufacturing process to create as many as 12 individually protected sub-units, each with 288 closely packed fibers. An extruded color-coded jacket protects and identifies each bundle and allows for direct and easy routing to splice trays, without the need for additional materials, ribboning processes, or furcation kits.

Corning said its new RocketRibbon cable allows operators to quickly install more capacity in the same duct space to accommodate increased bandwidth demand.

“Corning’s industry leadership and unique co-innovation approach mean our customers come to us to help solve their most important problems. RocketRibbon extreme-density cable demonstrates how we work hand-in-hand with our customers, listening to their challenges. In this case, we developed an entirely new system of ribbon protection and sub-units that provide our customers with easier, faster cable access for ribbon identification and splicing,” said Bernhard Deutsch, division vice president and general manager, Corning Optical Fiber and Cable.

Monday, February 5, 2018

Corning opens a new cable manufacturing plant in North Carolina

Corning has opened a new cable manufacturing facility in Newton, North Carolina. The factory will employ more than 200 people and is part of Corning’s previously announced plan to invest more than $250 million in its optical fiber, cable, and solutions manufacturing facilities.

In North Carolina, in addition to this new plant in Newton, Corning is also expanding its fiber manufacturing facility near Concord and its cable facilities in Winston-Salem and Hickory.

“Network operators around the world are challenged to meet exploding demand for high-speed connectivity and data storage,” said Clark S. Kinlin, executive vice president, Corning Optical Communications. “We are adding this cable capacity to help ensure reliable supply of the world’s highest performing optical cable in a growing market. This world-class facility was commissioned in record time, a feat that would not have been possible without our long-serving Catawba County employees, or the support of state and local leaders here in North Carolina.”

Thursday, December 14, 2017

Verizon acquires Chicago fiber network from WOW

Verizon Communications completed its previously announced acquisition of fiber network assets in Chicago from WideOpenWest (WOW).  The price was $225 million.

Verizon said the transaction secures fiber to more than 500 macro-cell wireless sites and more than 500 small-cell wireless sites in the Chicago area.

"The addition of these fiber assets is an important part of our strategy to reinforce our current network capabilities and prepare for the future. The completion of this acquisition will help expedite our network densification with fiber and small cells, enhancing our industry-leading 4G LTE network and laying the groundwork for 5G," said Nicola Palmer, Chief Engineer and Head of Wireless Networks, Verizon.

Monday, November 13, 2017

Mellanox: Infiniband powers most Supercomputers

InfiniBand solutions accelerate 77 percent of the new high-performance computing systems on the TOP500 list deployed since the previous list (June 2017 to November 2017), according to Mellanox Technologies.

Some highlights:

  • Mellanox accelerates the fastest supercomputer on the list
  • InfiniBand connects 2 of top 5 systems - #1 (China) and #4 (Japan)
  • InfiniBand connects 6 times more new HPC systems versus proprietary interconnects (June’17 - Nov’17)
  • InfiniBand connects 15 times more new HPC systems versus Ethernet (June’17 - Nov’17)
  • InfiniBand connects 77% of new HPC systems (June’17 – Nov’17)
  • Mellanox connects 39 percent of overall TOP500 systems (192 systems, InfiniBand and Ethernet)
  • InfiniBand connects 33 percent of the total TOP500 systems (164 systems)
  • InfiniBand connects 60 percent of the HPC TOP500 systems
  • 25G Ethernet first appearance on the Nov’17 TOP500 list (China Hyperscale companies) - 19 systems
  • Mellanox connects all of 25G, 40G and 100G Ethernet systems on the Nov’17 TOP500 list
  • InfiniBand is the most used high-speed Interconnect on the TOP500

“Due to its smart acceleration and offload advantages, InfiniBand connects the vast majority of the new TOP500 high-performance computing and deep learning systems deployed in the last 6 months. Furthermore, InfiniBand accelerates the fastest supercomputer in the world and in China, the fastest supercomputer in Japan, and has been selected to connect the fastest supercomputers in Canada, and in the US. By delivering highest applications performance, scalability and robustness, InfiniBand enables users to maximize their data center return on investment and improve their total cost of ownership by 50 percent,” said Eyal Waldman, president and CEO of Mellanox Technologies.

“We are also happy to see our 25 Gigabit and above Ethernet solutions on the TOP500 list, representing the adoption of our Ethernet NICs, switches and cables in hyperscale and cloud companies, as they deliver highest efficiency to these platforms. Finally, we are excited to showcase our HDR 200Gb/s switch systems portfolio at the Supercomputing’17 conference, as we plan to release our HDR InfiniBand solutions in the first half of next year, further increasing the technology advantage of Mellanox in high-performance computing, cloud, Web2.0, database, deep learning and compute and storage platforms.”

Wednesday, August 9, 2017

NTT demos 118 Tbit/s transmission on multi-core fibre

NTT, together with six partners, KDDI Research, Sumitomo Electric Industries, Fujikura, Furukawa Electric, NEC and Chiba Institute of Technology (CIT), announced a demonstration of what is claimed as the highest transmission capacity of 118.5 Tbit/s using a multi-core fibre with four optical paths within the same diameter as currently used fibre.

NTT noted that a conventional glass diameter of 125 µm in accordance with the international standard enables the use of existing fibre fabrication and optical connector technologies. The demonstration is designed to validate the concept of multi-core fibre-based long-haul and high capacity transmission system comprising multiple vendor technologies and advance the application of multi-core fibre technology.

In the new fibre, 4-5 cores can be arranged within a 125 µm diameter while maintaining the same transmission quality as current optical fibre, with a 316 km multi-core transmission line realised with a 0.21 dB/km average loss, concatenating standard diameter multi-core fibre with 4 cores fabricated by multiple vendors.

As part of the new design, Sumitomo Electric, Fujikura and Furukawa each fabricated a multi-core fibre with 4 cores and more than 100 km length. All multi-core fibres can be used in the 1260 to 1625 nm wavelength region and provide similar transmission properties to current SMF with mode filed diameter at 1550 nm of 9-10 µm).

The fabricated multi-core fibres were divided into a 20-40 km sections and three transmission spans with a length of 104-107 km were re-constructed by splicing the multi-core fibres provided by different vendors. A satisfactory low loss comparable to conventional SMF was achieved, with average loss of four cores in each span 0.22 dB/km or less, including splicing losses.

In addition, three multi-core optical amplifiers fabricated by NEC, KDDI Research, NTT and Furukawa were inserted at each end of three spans to compensate the signal attenuation. Cladding pumping type multi-core optical amplifiers designed to reduce power consumption were used, enabling a 16% improvement in power usage.

To confirm the performance of the constructed multi-core transmission line to beyond 100 Tbit/s transmission, 16QAM-based 116-wavelength signals were prepared and the output signal quality over 316 km transmission was examined.

Additionally, Fan-In/Fan-Out devices developed by NTT and Furukawa were used to input/output signals to and from each core of the multi-core fibre. Pluggable optical connectors with existing MU-type or SC-type interfaces from CIT and NTT were used to connect the input/output end of the multi-core transmission lines and Fan-In/Fan-Out devices.

The work was partially based on work commissioned by the National Institute of Information and Communications Technology (NICT), and the companies stated that they aim to introduce the standard diameter multi-core fibre by the early 2020s. The achievement was reported in early August as a post deadline paper at the Opto Electronics and Communications Conference (OECC 2017) in Singapore.