Rise of the splice machines

With the move to higher and higher bandwidth, there is an industry emphasis on the insertion loss and reflectance performance of optical fiber terminations. While there are still optical fiber termination methods that rely on field polish of the optical fiber at the point of installation, the dominant technology today is the polish of optical fiber connectors in the controlled manufacturing environment. Even connectors that are field installable often have their fiber endface prepared in the controlled and repeatable environment of the factory

Recent transceiver standards solve data centre upgrade issues

The emergence of the QSFP form factor has brought economies of scale to 100G upgrades, putting 100G within the cost reach of both small and hyper-scale data center operators. With a small profile and reduced power consumption, the QSFP form factor is the choice of switch manufacturers for 100G platforms. Despite the economies of scale at the switch level, the urgency to upgrade can inevitably lead to unforeseen compatibility and budget issues.

Tightly bundled or combed UTP Cables increase risk of Alien Crosstalk

Whenever Category 6A UTP cables capable of supporting 10 Gig applications are combed or tightly bundled, you risk increased alien crosstalk (AXT) that can wreak havoc on high speed transmission. Why? Alien crosstalk is caused by interference on a cable pair from a pair in an adjacent cable, and it became an issue with Category 6A cabling characterized up to 500 MHz simply due to the higher level of frequency and noise. So it’s easy to understand that anytime cables are evenly combed or tightly bundled together so that they lay adjacent to one another, alien crosstalk will increase—precisely why worst-case alien crosstalk testing involves six around one.

Rosenberger unveils PreCONNECT® SEDECIM cabling system: APC 8° angled polish optimizes return loss

Rosenberger has achieved excellent return loss values with APC 8° angled polish of multimode MTP®/MPO connectors. The APC 8° angled polish is used from the outset for singlemode MTP®/MPO ferrule endfaces to achieve reliable return loss. In contrast to this, only the PC 0° straight polish was previously used for multimode MTP®/MPO ferrule endfaces. Due to their PC 0° straight polish design, multimode MTP®/MPO connectors were previously particularly susceptible to performance problems caused by dirt particles, which in the past often led to unreliable return loss values.

The OM Mantra

Adopted by TIA, the nomenclature for multimode fiber found in the ISO/IEC 11801 standard includes the prefix “OM.” Rather than the spiritual mantra you hear in yoga class, most sources in our industry state that the acronym OM comes from “optical multimode” which seems rather obvious. But when it comes to the various nuances of each type of OM, the differences aren’t quite as obvious. There are currently five types of OM fiber—OM1, OM2, OM3, OM4 and OM5. OM1 fiber was the de facto choice for fiber throughout the 1980s and 1990s, and was still installed into the early 2000s. OM1 has a core diameter of 62.5 µm while OM2, OM3, OM4 and OM5 all feature a 50 µm core.

World’s fastest internet speed from a single optical chip

A research team has recorded the world’s fastest internet speed from a single optical chip of 44.2 Terabits per second.This technology has the capacity to support the high-speed internet connections of 1.8 million households in Melbourne, Australia, at the same time, and billions across the world during peak periods.
Demonstrations of this magnitude are usually confined to a laboratory. But, for this study, researchers achieved these quick speeds using existing communications infrastructure where they were able to efficiently load-test the network.