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Winter Olympic Games, communications guarantee "zero failure", network security "zero loophole"!
Feb 10 , 2022
On the evening of February 4, the opening ceremony of the Beijing Winter Olympic Games, which attracted worldwide attention, was held at the National Stadium "Bird's Nest". The relevant departments, bureaus, departments and systems of the Ministry of Industry and Information Technology cooperated closely and made careful arrangements to successfully complete the tasks of radio security, informatio...
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What are reflective and non-reflective events in otdr?
Jan 21 , 2022
1. The height of each point in the OTDR curve represents the backscattered light intensity at that location. When looking at the OTDR curve, you can see that the reflected signal is raised in some places, as if the optical power at the back is stronger than the front, which is impossible. Generally, this situation is the backscattering peak caused by the Fresnel reflection at the splicing, breakin...
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How to solve these six problems encountered in the process of optical fiber fusion splicing?
Sep 29 , 2021
1. There are bubbles or cracks in the contacts during welding This situation may be due to poor fiber cutting, such as the end face is inclined, burrs, or the end face is not clean, and the fiber needs to be cleaned before the splicing operation; there is also a situation that the electrical electrode is aging and the electrode rod needs to be replaced. 2. The welding is too thick or the contact p...
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What can 5G bring to you in the optical communication 700MHz technology industry seminar?
Sep 26 , 2021
Background introduction. China Radio and Television Zeng Qingjun said that 5G NR broadcasting does not change the existing network transmission system, and uses the existing NR channel to enable all 5G terminals to receive 5G digital television, without worrying about traffic and network congestion. What is the 700MHz Technology Industry Application Seminar? With the continuous acceleration of 5G ...
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Introduction and use of the optical cable identifier
Sep 17 , 2021
When using the optical cable identifier, the user only needs to tap the optical cable lightly to easily find the target. The built-in system of the instrument can convert the tapping information into audio and video signals. In other words, we can hear or see the target optical cable. Where. The optical cable identifier completely replaces the previous cutting, bending, freezing and other methods....
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Do you know what kinds of optical fiber connectors there are?
Sep 10 , 2021
In the field of optical fiber, optical fiber interface (also known as optical fiber connector) is a common product, which is a detachable device between optical fiber and optical fiber, and connects the two ends of optical fiber. It is not only connected to the optical fiber, but also can be repeatedly plugged and unplugged, so it has also become a movable connector of the optical fiber. With the ...
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The knowledge of photoelectric composite cable
Sep 01 , 2021
Photoelectric composite cable refers to a transmission line suitable for broadband access network systems. It is a new type of access method. It integrates optical fiber and copper wire for power transmission. It can solve the problems of broadband access, equipment power consumption, and signal transmission. structure Photoelectric composite low-voltage cables (referred to as photoelectric compos...
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What is OTDR Blind Area?
Aug 26 , 2021
Why does the blind area come up? The OTDR produces a blind area because the OTDR's detector is temporarily "blinded" by the high intensity Fresnel reflection light (mainly caused by the air gap between the OTDR connections). When the high intensity reflection is produced, the power of the photodiode is more than 4000 times higher than the backscatter power. Thus, the reflected light signal receive...
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what's the difference of fiber connector?
Aug 17 , 2021
Given the variety of splice options available to fiber network planners today identifying the best connector for FTTH can be overwhelming. Consequently often not much thought is given to connector selection with choice driven by cost, availability or what’s been used before. However each connector has its own unique design and therefore, pros and cons. Over time or depending on project...
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Classification of optical fiber loss.
Aug 13 , 2021
The optical fiber loss can be divided into the inherent loss of the optical fiber and the additional loss caused by the service conditions after the optical fiber is made. The details are as follows: Optical fiber loss can be divided into inherent loss and additional loss. The inherent loss includes scattering loss, absorption loss and the loss caused by the imperfect structure of optical fib...
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