Cable Testing 101: Considerations for Mixing Multimode Fiber Types |

With OM4 at a premium over OM3, many data centers and LANs not requiring the extra distance afforded by OM4 continue to deploy OM3 multimode fiber cabling, and it remains more widely deployed for that reason. And while the two fiber types can be mixed due to the same core size, there are some considerations in general when it comes to mixing multimode fiber types.

Furukawa first with high-density fiber optic cable into 1.25 inch conduit

Furukawa Electric Co has conducted an experiment in its Mie, Japan facility to demonstrate the installation of a 6912-fiber optical cable with an outer diameter of 1.14 inches (29 mm) in a 696 foot (200m) long conduit with three 90 degree curves and an inner diameter of 32mm. The conduit used was a standard product installed in conventional data center campuses. Engineers confirmed a maximum pulling tension of 84 pounds (372N), well below the maximum pulling tension of 600 pounds (2700N) specified for the cable.

China’s fast 5G rollout is widening its digital divide

China might be crushing it in 5G, but the rapid rollout is also widening its digital divide. According to the latest MIIT figures, Chinese operators have deployed 480,000 5G base stations – that’s at least twice as much as the rest of the world combined.
But these base stations serve a tiny proportion of potential users. Shenzhen has 45,000, Beijing 44,000 and Shanghai 56,000. In other words, 30% of China’s base station population serves 4% of its human population.

Webinar: Single Pair Ethernet Standards Update, Use Cases and Applications

Single Pair Ethernet is poised to enable a new class of low power devices that will facilitate networking and powering the billions of endpoint sensors forecasted by the year 2022. The SPE standards provide endpoint sensors with a unifying communication protocol and a common networking infrastructure extending the cost-effectiveness and plug-and-play simplicity of Ethernet. Endpoint sensor technology and use cases are evolving rapidly in industrial/process, building automation, data centers as well as to support “Intelligent Building” technologies; IoT infrastructure. TIA’s TR-42 committee is developing single pair telecommunication standards for single pair infrastructure topologies, cabling, and field testing.

Webinar: VIAVI Solutions YouTube LIVE Ethernet Basics

VIAVI Solutions is hosting a live Ethernet Basics session presented by System Engineers, Dave Baker and Peter Desmarais. Attendees will learn Ethernet technology basics including line rates (10M to 400G), types of pluggable optics, link establishment processes, frame structures, key performance indicators, and best practices to test connectivity and service activation. The presentation will include tips and tricks for novices as well as experts.

Ethernet Alliance Single-Pair Ethernet (SPE) Executive Briefing, Part 1

Single Pair Ethernet (SPE) technology is expected to be a significant driver of Industry 4.0, bringing transmission speeds from 10Mbit/s to 1GBit/s across simplified cabling infrastructure, while saving space and weight. SPE promises to save factories time in setting up, maintaining, and operating industrial networks, while enabling power supply and better reliability of terminal devices through its Power over Data Line (PoDL) capability. Cabling Installation & Maintenance recently sat for an interview with Peter Jones, Chair, Ethernet Alliance and Distinguished Engineer, Cisco; and Bob Voss, Senior Principal Engineer, Panduit and an industrial automation industry technical expert and association member.

Rosenberger OSI adds MDC fiber connector to PreCONNECT fiber cable line

Rosenberger OSI will offer the Miniature Duplex Connector (MDC) as part of the company’s PreCONNECT fiber cabling systems which will increase the density of its fiber cable offerings. The MDC push-pull duplex connector is based on 1.25-mm all-ceramic ferrule technology. It is a Very Small Form Factor (VSFF) fiber connector that can be used as a media dependent interface (MDI) or optical interface for SFP-DD and QSFP-DD optical transceivers.

Reimagining smart buildings in the post-COVID era

Smart buildings equipped with IoT sensors will play a pivotal role in helping organizations achieve these objectives, notably by enabling Real-Time Location Services (RTLS), through which contact tracing can be conducted based on algorithms that rely on both proximity and duration of encounters. While IoT solutions like the Enlighted ‘Safe’ application can even help enforce social distancing rules and implement access restrictions based on real-time traffic and occupancy, while help facility managers set up sanitization schedules depending on the actual use of space and amenities.

Fiber Dispersion Will Change The Way You See Your Links

Optical data signals are comprised of very short bursts of light, or optical pulses. When we transmit optical pulses through fiber, they broaden. This means that they become longer in duration as they travel through the fiber. If the fiber is long enough, this broadening causes the pulses to overlap and interfere with each other, which impacts the receiver’s ability to resolve the transmitted data, resulting in bit errors. This pulse broadening is due to a phenomenon called dispersion and limits the transmission bandwidth and distance. Single-mode and multi-mode fiber are each dominated by different types of dispersion.