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Updated: Jul 9, 2026

Design and Fabrication of an Optical Fiber Made of Water
Published on: November 8, 2018
Design of double-coated optical fibers to minimize long-term hydrostatic-pressure-induced microbending losses
Abstract:
The design of double-coated optical fibers to minimize long-term hydrostatic-pressure-induced microbending losses is investigated. Microbending loss in these fibers is dominated by compressive radial stress at the interface between the glass fiber and the primary coating, which is a function of the material properties of the polymeric coatings and their thickness. To minimize long-term hydrostatic-pressure-induced microbending losses, one should decrease the Young's modulus and Poisson ratio of the primary coating but increase the radius, Young's modulus, Poisson ratio, and relaxation time of the secondary coating. Alternatively, the radius and relaxation time of the primary coating have their optimum values.
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