Transoceanic Optical Submarine Cable Systems Using Optical Amplifiers

1992 ◽  
Author(s):  
Hiroharu Wakabayashi ◽  
Shu Yamamoto
Keyword(s):  
Optical Amplifiers ◽  
Submarine Cable ◽  
Cable Systems

scholarly journals A Cost-Effective Approach to the Risk Reduction of Cable Fault Triggered by Laying Repeaters of Fiber-Optic Submarine Cable Systems in Deep-Sea

2021 ◽  
Vol 9 (9) ◽  
pp. 939
Author(s):  
Yukitoshi Ogasawara ◽  
Wataru Natsu
Keyword(s):  
Deep Sea ◽  
Mechanical Stability ◽  
Optical Amplifiers ◽  
Cost Effective ◽  
Optical Signal ◽  
Submarine Cable ◽  
Long Distance ◽  
Cost Effective Approach ◽  
Cable Systems ◽  
Cable Damage

Long-distance submarine cable systems, such as the transoceanic system, generally consist of a series of cables and repeaters. Repeater units are spaced at regular intervals to boost the attenuated optical signal and presently contain optical amplifiers in a pressure vessel made of copper alloy. Since the repeater unit is more massive than the cable, it pulls the cable catenary locally toward the seabed. In the 1990s, several studies numerically simulated cable behavior in the water and showed that the seabed slack runs short, and the seabed cable tension increases just before the repeater reaches the seabed. Therefore, it has been pointed out that an unarmored cable with a polyethylene sheath can be easily damaged. However, no reports have been published regarding the actual situation of cable faults related to the laying of repeaters. This study quantitatively analyzes the mechanism of cable damage related to the laying of repeaters, based on experiments, simulations, maintenance records, and a comparative analysis between the simulation results and actual cable faults. Cost-effective methods to mitigate cable faults triggered by laying a repeater in the deep sea are also explored to ensure mechanical stability during the design lifetime.

Single-mode fibers for submarine cable systems

1981 ◽  
Vol 17 (6) ◽  
pp. 907-910 ◽  
Author(s):  
J. Irven ◽  
G. Cannell ◽  
K. Byron ◽  
A. Harrison ◽  
R. Worthington ◽  
...  
Keyword(s):  
Single Mode ◽  
Submarine Cable ◽  
Cable Systems

Intercontinental Links via Optical Fibre Submarine Cable Systems

1986 ◽  
Vol 3 (8) ◽  
pp. 373-378
Author(s):  
G. Bonaventura ◽  
F. Bigi
Keyword(s):  
Optical Fibre ◽  
Submarine Cable ◽  
Cable Systems

Twist Moments and Deformations in Submarine Cable Installation

1982 ◽  
Vol 104 (1) ◽  
pp. 104-107 ◽  
Author(s):  
A. J. Shashaty
Keyword(s):  
Submarine Cable ◽  
Cable Systems ◽  
Number Of Segments

Submarine cable systems made up of combinations of armorless cable and armored cable are subject to twist moments and deformations during installation. These stresses and strains may damage the cable. An expression is presented for the twist moment and deformation in a string made up of any number of segments, laid with or without bottom tension. Three sample cases are worked out using two specified cables.

Novel gain tilt monitoring method for DWDM submarine cable systems

2001 ◽  
Author(s):  
Masakazu Nakada ◽  
Toshio Kawazawa ◽  
Koji Goto
Keyword(s):  
Submarine Cable ◽  
Monitoring Method ◽  
Cable Systems

A Different Approach to the Repair and Protection of Submarine Cable Systems

1984 ◽  
Vol PER-4 (1) ◽  
pp. 42-42
Author(s):  
W. C. Engelmann ◽  
A. J. von Alt ◽  
W. F. Searle
Keyword(s):  
Submarine Cable ◽  
Cable Systems
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