Data Center News
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UPC and APC refer to two types of fiber optic connector polish styles: Ultra Physical Contact (UPC) and Angled Physical Contact (APC). UPC connectors have a flat, slightly domed end-face that provides low insertion loss and are commonly used in digital systems like Ethernet and CATV. APC connectors feature an 8-degree angled end-face that minimizes…
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Duplex patch cords are fiber optic cables that contain two strands—one for transmitting and one for receiving optical signals, allowing bidirectional communication between devices. These cords are typically used in full-duplex systems such as Ethernet or Fibre Channel, where simultaneous send and receive operations are required. Duplex patch cords often feature connectors like LC, SC,…
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Port flapping is a network condition where a switch or router interface continuously transitions between an active (up) and inactive (down) state. This repetitive toggling disrupts link stability and can trigger frequent topology recalculations in protocols like STP (Spanning Tree Protocol), leading to packet loss, latency, and degraded performance across the network. Common causes include…
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Insertion Loss in fiber optics refers to the amount of signal power lost when a component—such as a connector, splice, or device—is inserted into the optical path. It’s measured in decibels (dB), and lower values indicate better performance. When light travels through a fiber, any interruption or interface can cause some of the signal to…
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Attenuation in fiber optics refers to the gradual weakening of an optical signal as it travels through the fiber. This loss happens because some of the light energy is absorbed by the glass material or scattered due to microscopic irregularities. It’s measured in decibels per kilometer (dB/km), and the lower the number, the better the…
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Reflection occurs when an optical signal traveling through a fiber encounters a change in refractive index—typically at a connector, mechanical splice, or fiber break—and part of the light is reflected back toward the transmitter. This backward-propagating light can interfere with the source, especially in systems using lasers, and may degrade signal quality or cause instability.…
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Amazon has announced Fastnet, its first independently owned transatlantic subsea cable project, designed to connect Maryland, USA, with County Cork, Ireland. Scheduled for completion in 2028, the system will deliver more than 320 terabits per second (Tbps) of capacity, enhancing Amazon Web Services (AWS) infrastructure and boosting global cloud computing and artificial intelligence (AI) network…
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Refraction in fiber optics refers to the change in direction of light as it passes between materials of different optical densities—specifically, from air into the fiber optic core, and between the core and cladding within the fiber. This bending of light is governed by Snell’s Law and is essential for initiating and maintaining the transmission…
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Outside Plant (OSP) refers to all fiber optic infrastructure deployed outdoors—such as cables, splice enclosures, cabinets, and conduits—that connect central offices to service locations like homes, businesses, or data centers. OSP fiber networks form the backbone of modern telecommunications. They begin at a central office or headend, where optical signals originate, and extend through distribution…
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Fiber optic characterization is the comprehensive process of testing and analyzing a fiber optic link or network to evaluate its performance, integrity, and ability to support high-speed data transmission. It involves a series of measurements and diagnostics designed to identify optical impairments, verify design specifications, and ensure that the fiber system meets required industry standards…
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Fiber connectors are essential components that allow optical fibers to be joined or disconnected without permanent fusion. They ensure precise alignment of the fiber cores to maintain minimal signal loss and reflection. The SC (Subscriber Connector) is one of the most common types, known for its square shape, push-pull locking mechanism, and reliability in data…
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The most commonly known fiber connectors among fiber optic technicians are SC, LC, ST, FC, and MPO. Each has distinct physical characteristics and use cases, with SC and LC dominating modern deployments. SC (Subscriber Connector)The SC connector is a square-shaped, push-pull style fiber optic connector with a 2.5 mm ferrule. It’s widely used in telecom…
