SPECIFIC FEATURES OF OPTICAL FIBER CABLE OPERATION DURING TENSION AND CHANGE OF AMBIENT TEMPERATURE

2020 ◽  
Keyword(s):  
Optical Fiber ◽  
Ambient Temperature ◽  
Lower Limit ◽  
Fiber Optic ◽  
Fiber Optic Cable ◽  
Thermoelastic Deformation ◽  
Optical Module ◽  
Optical Fiber Cable ◽  
Analytical Expressions

This article examines the effect of longitudinal and thermoelastic deformation of an optical module on the technological reserve of an optical fiber. Analytical expressions are given for determining the lower limit of the technological margin of an optical fiber for various types of fiber-optic cable section along the axis.

scholarly journals ANALISIS REDAMAN SERAT OPTIK TERHADAP PERFORMANSI SKSO MENGGUNAKAN METODE LINK POWER BUDGET (STUDI KASUS PADA LINK PADANG-BUKITTINGGI DI PT. TELKOM PADANG)

2018 ◽  
Vol 2 (2) ◽  
Author(s):  
Ilham Sudrajat ◽  
Yasdinul Huda ◽  
Delsina Faiza
Keyword(s):  
Optical Fiber ◽  
Power Output ◽  
Communication Systems ◽  
Fiber Optic ◽  
Optical Fiber Communication ◽  
Power Budget ◽  
Fiber Optic Cable ◽  
Fiber Communication ◽  
Cable Length ◽  
Attenuation Value

Based on the survey data of optical fiber service, the communication network uses optical fiber transmission medium is not maximal yet, because there are some errors in the network, such as the percentage of Network Post Dialing Delay in system is 97.5%, that means there is 2.5% of error a delay occurs in the network when making a call. This research was conducted by analyzing the fiber attenuation of fiber-optic communication systems performance on the link Padang-Bukittinggi in PT. Telkom Padang, SKSO division which uses single mode fiber optic cable types G655. Instrument in this study is the Power Meter and OTDR JDSU MTS-6000 type. Link Power Budget method is used to determine the performance of optical fiber communication systems caused by attenuation based on the value of the received power output. Obtained results on the link Padang-Bukittinggi highest attenuation occurs in core 5 with 26.7226 dB attenuation value and cable length 115 016 km, and in core 7 with 26.1812 dB and cable length 94 462 km. This value is still below of PT. Telkom standard with 28.10352 dB for core 5. While the attenuation value at 7 cores exceeds standard attenuation values​​, with 24.18186 dB, so the performance of the core is declared bad and needs to be evaluated. From optical fiber attenuation value, result of the link power budget analysis is obtained from the calculation of the value of Rx is smaller when compared with -27 dBm the value of Rx sensitivity, it can be said the performance of optical fiber communication systems on the link in the normal state and can be used to operate because the power output can be accepted by the receiver in the device. Keywords: fiber optic cable, optical fiber attenuation, SKSO, link power budget.

scholarly journals Curvature Analysis in Fiber Optic Cables as a Tilt Sensor Based on Macro Bending

2020 ◽  
Vol 2 (2) ◽  
pp. 91-99
Author(s):  
Imam Mulyanto
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Fiber Optic ◽  
Laser Light ◽  
Single Mode ◽  
Fiber Optic Cable ◽  
Power Meter ◽  
Curvature Analysis ◽  
Bending Process ◽  
Tilt Sensor

The test has been successfully carried out on optical fibers to be used as a macrobending tilt sensor using SMF-28 single mode optical fiber. The optical fiber was molded with silicon rubber, then connected to a laser light and a power meter to see the intensity of the laser power produced. The principle is carried out using the macro bending phenomenon on single mode optical fibers, where the laser light intensity in the fiber optic cable will decrease if there is a bend or bending in the fiber optic cable. We can observe the power loss resulting from the macro bending process to find out how sensitive the optical fiber is to changes in a given angle. The resulting optical fiber sensitivity value is -0.1534o/dBm.

A Video Extensometer Design for The Tensile Strain Test of Fiber Optic Cable

2012 ◽  
Vol 271-272 ◽  
pp. 697-700
Author(s):  
Sheng Ke Ning ◽  
Yan Yan Chen ◽  
Bao Ji Ma
Keyword(s):  
Measurement Accuracy ◽  
Fiber Optic ◽  
Image Acquisition ◽  
Ccd Camera ◽  
Fiber Optic Cable ◽  
Image Processing Techniques ◽  
Technical Requirements ◽  
Processing Module ◽  
Optical Fiber Cable ◽  
Processing Techniques

A strain measurement system for fiber optic is established based on digital image processing techniques. The hardware of the system is consists of a light source, optical fiber cable tensile equipment, CCD camera and image acquisition card. Hardware equipment was selected by the technical requirements of the system, such as measurement accuracy, velocity and so on. The software of the system, including image acquisition module, data processing module, edge detection module, image measurement module and image storage module, is designed.

Fiber Optic Signal Transmission to Reduce Radio-Frequency Interference from a High-Voltage Spark Source

1983 ◽  
Vol 37 (6) ◽  
pp. 537-539 ◽  
Author(s):  
Steven G. Barnhart ◽  
John P. Walters
Keyword(s):  
Optical Fiber ◽  
Radio Frequency ◽  
High Voltage ◽  
Fiber Optic ◽  
Signal Transmission ◽  
Radio Frequency Interference ◽  
Computer Logic ◽  
Optical Fiber Cable ◽  
And Performance ◽  
Discharge Experiment

The incorporation of fiber optic signal transmission into a high voltage spark discharge experiment to reduce radio-frequency interference is described. Electrical isolation and the elimination of ground loops provided by the fiber optic links allow the use of sensitive CMOS computer logic in control of an electrically noisy spark source experiment. Circuit schematics are given and performance with three optical fiber cable types is described.

scholarly journals Harnessing the Power of Sensors and Machine Learning to Design Smart Fence to Protect Farmlands

Electronics ◽  
2021 ◽  
Vol 10 (24) ◽  
pp. 3094
Author(s):  
Preetam Suman ◽  
Deepak Kumar Singh ◽  
Fahad R. Albogamy ◽  
Mohammad Shibee
Keyword(s):  
Machine Learning ◽  
Optical Fiber ◽  
Fiber Optic ◽  
Laser Light ◽  
Learning Algorithms ◽  
Machine Learning Algorithms ◽  
Crop Damage ◽  
Machine Learning Techniques ◽  
Fiber Sensor ◽  
Fiber Optic Cable

Agriculture and animals are two crucial factors for ecological balance. Human–wildlife conflict is increasing day-by-day due to crop damage and livestock depredation by wild animals, causing local farmer’s economic loss resulting in the deepening of poverty. Techniques are needed to stop the crop damage caused by animals. The most prominent technique used to protect crops from animals is fencing, but somehow, it is not a full-proof solution. Most fencing techniques are harmful to animals. Thousands of animals die due to the side effects of fencing techniques, such as electrocution. This paper introduces a virtual fence to solve these issues. The proposed virtual fence is invisible to everyone, because it is an optical fiber sensor cable, which is laid 12-inches-deep in soil. A laser light is used at the start of the fiber sensor cable, and a detector detects at the end of the cable. The technique is based on the reflection of light inside the fiber optic cable. The interferometric technique is used to predict the changes in the pattern of the laser light. The fiber cable sensors are connected to a microprocessor, which can predict the intrusion of any animal. The use of machine learning techniques to pattern detection makes this technique highly efficient. The machine learning algorithms developed for the identification of animals can also classify the animal. The paper proposes an economical and feasible machine-learning-based solution to save crops from animals and to save animals from dangerous fencing. The description of the complete setup of optical fiber sensors, methodology, and machine learning algorithms are covered in this paper. This concept was implemented and regressive tests were carried out. Tests were performed on the data, which were not used for training purposes. Sets of people (50 people in each set) were randomly moved into the fiber optic cable sensor in order to test the effectiveness of the detection. There have been very few instances where the algorithm has been unable to categorize the detections into different animal classes. Three datasets were tested for configuration effectiveness. The complete setup was also tested in a zoo to test the identification of elephants and tigers. The efficiency of identification is 94% for human, 80% for tiger, and 75% for elephant.

scholarly journals Analisis Link Budget Penyambungan Serat Optik Menggunakan Optical Time Domain Reflectometer AQ7275

2018 ◽  
Vol 10 (1) ◽  
pp. 36-40
Author(s):  
Tio Hanif Yanuary ◽  
Lita Lidyawati
Keyword(s):  
Optical Fiber ◽  
Fiber Optics ◽  
Time Domain ◽  
High Speed ◽  
Fiber Optic ◽  
Light Wave ◽  
Fiber Optic Cable ◽  
Optical Time Domain Reflectometer ◽  
Optical Time ◽  
Time Domain Reflectometer

An optical fiber is a high-speed telecommunication transmission medium. Principally, an optical fiber is made of a very fine glass fiber material, which is able to transmit light waves using light reflection method on the surface of the fiber optics core. An underground installation of the fiber optics makes this device robust from external interferences. However, the fiber optic cable performance should always be checked to maintain performance during data transmission process. One way to test fiber optics cable performance is by using an Optical Time - Domain Reflectometer (OTDR) device. This device sends a light wave from one point of the fiber optics cable. The light wave then returns when reaching the other point of the fiber optic cable while carrying some measurement parameters especially the physical length and attenuation of a fiber optic cable. The evaluation of the fiber optics cable performance requires the preparation, installation, and configuration of the OTDR. In this paper, we conducted evaluation on the performances of fiber optics cable. The data generated by the performed evaluation indicated an occurring attenuation on the fiber optics cable along 64.402 km of its lengths.

Pipeline Monitoring With Geotechnical Optical Fiber

2017 ◽  
Author(s):  
Christian Silva ◽  
Fabien Ravet
Keyword(s):  
Optical Fiber ◽  
Fiber Optic ◽  
Large River ◽  
Temperature Sensing ◽  
Fiber Optic Cable ◽  
Right Of Way ◽  
Geotechnical Monitoring ◽  
Pipeline Monitoring ◽  
Operating Company ◽  
Abnormal Temperature

The 408 km × 34" PERULNG pipeline (operated by Hunt LNG Operating Company) is monitored in its first 62 km by a geotechnical fiber optic cable, since these first 62 km are exposed to major geohazard threats such as landslides, large river crossings, high slopes, bofedales, etc. The fiber optic cable geotechnical monitoring relies on the measurement of strain and temperature in the pipeline right-of-way. Due to the continuous and real-time monitoring of the duct, it was possible to detect a tension cracking near KP 25 + 600 as an abnormal temperature change was captured by the temperature sensing cable; also near KP 27 + 900 and KP 34 + 750 unusual cable stresses were detected which announced landslides of the rotational type in both locations. In these three cases, protection decisions could be taken to secure pipeline’s integrity.

scholarly journals Perancangan Siste Data Udara Menggunakan Media Tranmsisi Serat Optis

2016 ◽  
Vol 2 ◽  
pp. 169
Author(s):  
Daniel Rudianto
Keyword(s):  
Optical Fiber ◽  
Radio Frequency ◽  
Fiber Optic ◽  
Data System ◽  
Optical Fiber Transmission ◽  
Radio Frequency Interference ◽  
Fiber Technology ◽  
Optical Fiber Cable ◽  
Electro Magnetic ◽  
Fiber Transmission

The use of optical fiber transmission media at the Air Data System is affected by the development of optical fiber technology. The system is able to present the data required by the flight crews quickly and accurately. Therefore, it supports the success of a certain mission. In addition, the air data system using the transmission medium optical fiber also has advantages other than the copper cables, i.e: immune to EMI (Electro Magnetic Interference), RFI (Radio Frequency Interference), EMP (Electro Magnetic Pulses), and will not experience any disruption caused by the occurrence of a short circuit.The fiber optic air data system is designed in consideration with the characteristics of it’s components i.e: the transmitter, optical fiber cable and the data receiver. The study also completely discusses the air data system, from the sensor, Air Data Computer (ADC), and the display of aircraft altitude and speed. .Kata kunci:    Serat optis, sistem data udara, air data computer.

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