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Updated: Jun 14, 2026
08:06
Design and Fabrication of an Optical Fiber Made of Water
Published on: November 8, 2018
Submarine optical fiber cable: development and laying results.
N Kojima1, T Yabuta, Y Negishi
1Nippon Telegraph & Telephone Public Corporation, Ibaraki Electrical Communication Laboratory, Tokai, Ibaraki, 319-11, Japan.
Applied Optics
|April 8, 2010
Summary
This study presents a novel submarine optical fiber cable design for shallow water deployments without repeaters. The cable effectively suppresses elongation and excess loss, achieving excellent laying results and low signal attenuation.
Area of Science:
- Optical Engineering
- Marine Technology
- Telecommunications
Background:
- Submarine optical fiber cables are crucial for inter-island and channel communications.
- Existing designs face challenges with elongation under tension and hydraulic pressure in shallow seas.
- The need for repeaterless cables in specific deployment scenarios is increasing.
Purpose of the Study:
- To describe the structural design of a repeaterless submarine optical fiber cable for shallow water applications.
- To detail the trial production and laying procedures for the developed cable.
- To report the performance and laying results of the novel cable design.
Main Methods:
- Proposed structural design methods to suppress cable elongation under tension.
- Incorporated design considerations to minimize excess loss under hydraulic pressure.
- Conducted trial production and successful laying of the 10.2-km cable in shallow seas.
Main Results:
- Achieved average signal loss of 0.72 dB/km for single-mode fibers.
- Recorded average signal loss of 0.81 dB/km for multimode fibers at 1.3-microm wavelength.
- Demonstrated good laying results, validating the cable's structural integrity and performance.
Conclusions:
- The proposed structural design effectively addresses challenges in shallow-water submarine cable deployments.
- The repeaterless cable offers a viable solution for inter-island and channel crossings.
- The achieved low signal loss confirms the cable's suitability for reliable data transmission.
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