Tech Docs
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Basic electrical properties describe how different materials respond to electric current and electric fields. The most fundamental of these is electrical conductivity, which measures how easily a material allows electric current to flow through it. Materials with high conductivity (like copper or silver) are called conductors; those with very low conductivity (like glass or rubber)…
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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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OM1 to OM5 refer to standardized categories of multimode optical fiber, each defined by core size, bandwidth capacity, and transmission distance. OM1 uses a 62.5 µm core and supports up to 1 Gbps over short distances, while OM2 through OM5 use a 50 µm core and are optimized for higher-speed VCSEL-based transmissions. OM3 and OM4…
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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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DIN EN ISO 12100 is a European machinery-safety standard that establishes the foundational principles for the design, risk assessment, and hazard mitigation of machines and machine assemblies. It defines a machine as an integrated system of connected components, including at least one moving part, powered by a source other than human or animal effort and…
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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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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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An optical power meter is a precision instrument used in fiber optic networks to quantify the optical signal power transmitted through a fiber. It operates by converting incoming light—usually in the infrared range—into an electrical signal using a calibrated photodetector, then displaying the power level in decibel-milliwatts (dBm) or milliwatts (mW). This measurement is critical…
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