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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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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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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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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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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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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 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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The key points of fiber cleaver use
Feb 17 , 2022
Optical fiber cleavers are used in relatively harsh environments, so correct operation and maintenance are of great significance to ensure the service life of the cleaver and the quality of fiber cleaving. The D12 fiber cleaver of Shenhuo Seiko Nanjing Communication Technology Co., Ltd. is a compact and easy-to-operate fiber cleaver, which can be used to cut single-mode, multi-mode, dispersion and...
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Ten reasons for excessive splicing loss of optical fiber
Feb 23 , 2022
1. Choose the wrong optical fiber splicing program; for example, misselect the single-mode splicing program to multi-mode. 2. The cutting angle of the end face of optical fiber is too large. 3. The optical system is dirty, mainly the reflector and objective lens. 4. V-shaped slot dirty, optical fiber pressure foot dirty. 5. The aging of the electrode leads to the weak discharge intensity, and the ...
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The knowledge and use of OTDR launch cable
Mar 04 , 2022
1. Knowledge of OTDR extension cable The OTDR extension cable is similar to the optical fiber jumper. There is no fusion point in the middle of the optical fiber. During the optical fiber test, the OTDR extension cable is the insertion loss and reflectivity of the near-end connection and the far-end connection of the optical fiber line when using the OTDR measurement. It is mainly used to make up ...
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Difference between G652 fiber and G654 fiber
Mar 18 , 2022
G.652 optical fiber is the most widely used optical fiber. At present, except for fiber-to-the-home (FTTH) home optical cables, almost all optical fibers used in long-distance and metropolitan areas are G.652 optical fibers. From the perspective of light energy distribution, the optical signal in the single-mode fiber is not only transmitted in the core, but also in the cladding. In ...
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What is the difference between fiber patch cords and pigtails?
Apr 01 , 2022
The difference between the two is that the pigtail is used to connect the optical cable and the jumper, and the jumper is to connect the pigtail and the terminal equipment. Optical fiber jumper is a jumper used from equipment to optical fiber cabling link, also known as optical fiber connector, which has a thicker protective layer and is generally used in the connection between optical transceiver...
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Working principle of Optical Fiber Fusion splicer.
Apr 12 , 2022
Optical fiber fusion splicer can be said to be an indispensable tool product in the field of communication engineering. for people who have had experience in communication engineering, they must know the operation of the fusion splicer like the back of their hand, but it is such a fiber fusion splicer. do you know how he works? Today we will introduce, if you understand, it may be helpful to the l...
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How to reduce the fusion splicing loss?
Apr 28 , 2022
The size of the loss is a very important technical indicator of the optical fiber fusion splicer. The lower the loss, the higher the precision of the machine, which can support longer distance fusion splicing. The more perfect the fusion point, the longer the service life. 1. The fiber cleaver cutting angle of the fiber is very important. At present, most of the optical fiber fusion splicers are f...
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The use of Seikofire fiber fusion splicer GPS function
May 13 , 2022
The use of Seikofire fiber fusion splicer GPS function. 1 download and install "Aika Life" APP on the mobile terminal. 2 Open the "Aika Life" APP, enter the ID address of GPS, enter the original password 123456, and click "Log in" 3 Click "Real-time tracking" to view the location of the device, the location of the mobile terminal and the device to. The straight line of the mobile phone terminal. 4...
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OTDR test with light
May 24 , 2022
What is OTDR test with light? When testing with the wavelengths of 1310nm, 1490nm and 1550nm of common OTDR, it is necessary to require that there is no communication optical signal in the line under test. Forcing the test with light will burn out the internal detector of the OTDR. With light test, the OTDR can still complete the test without interrupting the signal light in the line during the te...
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