Optical-loss change characteristics of fiber organizers for optical-fiber cable joints

1989 ◽  
Vol 72 (4) ◽  
pp. 96-105
Author(s):  
Masatoshi Shimizu ◽  
Hideo Kobayashi ◽  
Nobuo Tomita
Keyword(s):  
Optical Fiber ◽  
Optical Loss ◽  
Change Characteristics ◽  
Optical Fiber Cable

scholarly journals 2 Loss Analysis in Optical Fiber Transmission

2015 ◽  
Vol 5 (1) ◽  
pp. 6
Author(s):  
Anusha Mushtaque ◽  
Abi Waqas Memon ◽  
Zarlish Mushtaq ◽  
Aftab A. Memon ◽  
B. S. Chowdhry
Keyword(s):  
Optical Fiber ◽  
Bit Error Rate ◽  
Optical Loss ◽  
Optical Fiber Transmission ◽  
Optical Losses ◽  
Power Meter ◽  
Loss Analysis ◽  
Propagation Of Light ◽  
Optical Fiber Cable ◽  
Fiber Segment

Most of telecommunication traffic (voice and data)around the globe is carried over the optical fiber cable. Theinternational traffic through various countries is carried overoptical fiber cables laid under the sea. Similarly the long-haultraffic within the country is through optical fiber laidunderground. Stress, strain, humidity, temperature, bending atacute angles affects the propagation of light energy in the opticalfiber cable. All such factors increase the optical loss andattenuate the signal. The attenuation, especially in the long-haulcommunication increases the bit error rate and degrades thequality of service. In this paper, different optical losses areanalyzed by setting up several experiments at a single modeoptical fiber spool of 4 km. The optical fiber segment wassubjected to various stress, temperatures and acute bendingconditions. The resulting losses and degradation of the signal wasmeasured using OTDR and Power meter.

Lateral and Hydraulic Pressure Characteristics of Submarine Optical Fiber Cable

1984 ◽  
Vol 106 (4) ◽  
pp. 527-532 ◽  
Author(s):  
T. Yabuta ◽  
K. Hoshino ◽  
N. Yoshizawa
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Structural Design ◽  
Design Method ◽  
Optical Loss ◽  
Hydraulic Pressure ◽  
Breaking Elongation ◽  
Tension Member ◽  
Optical Fiber Cable ◽  
Pressure Characteristics

On designing optical fiber cables, it is necessary to deal with the weakness of optical fibers, such as a small breaking elongation compared with metals and excess optical loss under both lateral and hydraulic pressure. This paper presents a structural design method for submarine optical fiber cables, based on the study of both lateral and hydraulic pressure characteristics. This paper also clarifies that a composite tension member increases the lateral and hydraulic pressure strength of the cable and can protect optical fibers from extremely large force during laying and recovery.

scholarly journals 2 Loss Analysis in Optical Fiber Transmission

2015 ◽  
Vol 1 (1) ◽  
pp. 6
Author(s):  
Anusha Mushtaque ◽  
Abi Waqas Memon ◽  
Zarlish Mushtaq ◽  
Aftab A. Memon ◽  
B. S. Chowdhry
Keyword(s):  
Optical Fiber ◽  
Bit Error Rate ◽  
Optical Loss ◽  
Optical Fiber Transmission ◽  
Optical Losses ◽  
Power Meter ◽  
Loss Analysis ◽  
Propagation Of Light ◽  
Optical Fiber Cable ◽  
Fiber Segment

Most of telecommunication traffic (voice and data)around the globe is carried over the optical fiber cable. Theinternational traffic through various countries is carried overoptical fiber cables laid under the sea. Similarly the long-haultraffic within the country is through optical fiber laidunderground. Stress, strain, humidity, temperature, bending atacute angles affects the propagation of light energy in the opticalfiber cable. All such factors increase the optical loss andattenuate the signal. The attenuation, especially in the long-haulcommunication increases the bit error rate and degrades thequality of service. In this paper, different optical losses areanalyzed by setting up several experiments at a single modeoptical fiber spool of 4 km. The optical fiber segment wassubjected to various stress, temperatures and acute bendingconditions. The resulting losses and degradation of the signal wasmeasured using OTDR and Power meter.

Submarine optical fiber cable: development and laying results

1982 ◽  
Vol 21 (5) ◽  
pp. 815 ◽  
Author(s):  
Nobuya Kojima ◽  
Tetsuro Yabuta ◽  
Yukiyasu Negishi ◽  
Kazuo Iwabuchi ◽  
Osamu Kawata ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Optical Fiber Cable

scholarly journals Distributed Fiber Optical Technology for Damage Identification of Engineering Structure

2018 ◽  
Vol 14 (06) ◽  
pp. 17
Author(s):  
Xiaoma Dong ◽  
Liqiang Zhou
Keyword(s):  
Optical Fiber ◽  
Model Test ◽  
Damage Identification ◽  
Dynamic Range ◽  
Optical Loss ◽  
Rock Foundation ◽  
Rock Slide ◽  
Fiber Sensing ◽  
Optical Fiber Sensing ◽  
Interface Slip

<p class="0abstract"><span lang="EN-US">To conduct optical fiber monitoring rock slide model test and optical fiber monitoring of steel concrete interface slip model test, the large triaxial shear test of geotechnical engineering </span><span lang="EN-US">wa</span><span lang="EN-US">s used. First, the data of sliding distance and optical loss and their dynamic range </span><span lang="EN-US">we</span><span lang="EN-US">re obtained. Second, the slide distance and fiber loss relation curve and the fitting equation </span><span lang="EN-US">we</span><span lang="EN-US">re worked out. Finally, the typical applications of optical fiber sensing technology in Rock Engineering (high slope engineering, rock foundation of Dam Engineering) slope stability and geological disaster monitoring </span><span lang="EN-US">we</span><span lang="EN-US">re put forward.</span><span lang="EN-US">The results showed that optical fiber sensing was very sensitive, and the loss value was 30 to 50dB. The dynamic range of rock slide monitoring fiber was 3 to 3.5mm, and the dynamic range of the interface slip monitoring fiber was 1.6mm. Thus, the sensing system can detect the sliding process of the interface between the concrete and the steel plate. It provides some reference for the sliding monitoring of the composite materials.</span></p>

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