Блог

OTDR Basic Principles

An OTDR sends short pulses of light into a fiber. Light scattering occurs in the fiber due to discontinuities such as connectors, splices, bends, and faults. The OTDR then detects and analyzes the backscattered signals. The signal strength is measured for specific intervals of time and is used to characterize events. The OTDR calculates distances […]

Test Equipment

Trouble shooting for EXFO OTDR

Problem Cause Solution The application displays a message indicating that a “Non-resolved fiber end” event has been found. The fiber under test is too long. Ensure that the fiber under test is shorter than the maximum length the OTDR can measure. The application displays message indicating that a “live fiber error” occurred and the fiber […]

Test Equipment

How to Clean and Connecting Optical Fibers to OTDR

If your fiber optic cable is not properly aligned and/or connected, you will notice heavy loss and reflection. Properly cleaning and connecting optical fibers to OTDR is important, please follow the following steps to clean the fibers and connecting it to OTDR. To connect the fiber optic cable to the port: 1. Inspect the fiber […]

Test Equipment

Fujikura 22S cladding alignment fusion splicer

AFL has introduced the Fujikura 22S active cladding alignment fusion splicer. With this model’s moveable v-grooves, splicer errors due to dust and other contaminants are virtually eliminated, says the company. Removable sheath clamps allow the use of fiber holders, and the unit’s large monitor provides a crystal clear image, even in bright sunlight. “Fujikura continues […]

Fusion Splicing

Macro bending Detection By an OTDR

On a transmission network, one cause of insertion loss on a fiber link is macro bending. This is commonly caused by tight installation or handling. As Fiber-to-the-Home (FTTH) networks lead to a significant increase of fiber installation in the last mile, the space constraints become increasingly stringent. This is driving the need for distributions hubs […]

Test Equipment

International Standards for Optical fiber

ITU-T G.651 Multimode fiber standard • In enterprise network, multimode fiber is becoming more In enterprise network, multimode fiber is becoming more popular in the horizontal cabling in the Fiber-to-the-Zone (FTTZ) architecture • Bandwidth is shifting from 1Gbps to 10Gbps, therefore shrinking the power loss budget ITU-T G.652 Standard Singlemode fiber. 4 different categories (A, […]

Optical Fiber

Fujikura 62S active core alignment fusion splicer

Fujikura fusion splicer expand product line with the Fujikura 62S, an active core alignment splicer featuring exceptional splice loss performance and minimized splice time. With a conventional flip-open wind protector and non-motorized tube heater, the complexity of this splicer is reduced, without compromising total cycle time, says the company. Additionally, the number of steps to […]

Fusion Splicing

YOKOGAWA AQ1200 OTDR Error Messages Execution — troubleshooting

Error Messages Messages may appear on the screen during operation. This section describes the error messages and how to respond to them. Messages can be displayed in English or Japanese (see section 19.1). If the corrective action states that serving is required, contact your nearest YOKOGAWA dealer. In addition to the following messages, there are also communications error […]

Fiber Tester Maintenance

ST Connector Introduction – Fiber Connector Introduction

The ST connector (Straight Tip or Bayonet Fiber Optic Connector ), mainly applied in Multimode, rarely single-mode, complied with IEC 61754-2, the ST Connector features a 2.5 mm ferrule with a quick release bayonet (stick and twist) style body for ease of use. ST connectors are available for single mode UPC with yellow boots, APC […]

Passive Component
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