Abstract

The developments of optical fiber technology in Japan are reviewed. Multicomponent glass optical fibers, pure silica-core single-mode fibers, dispersion-shifted fibers, rare-earth-doped optical fibers, polarization maintaining fibers, and hermetically coated fibers are discussed. The modified chemical vapor deposition and vapor phase axial deposition methods are described. Required properties of coating material and the cable structure and coating layer structure of fibers are detailed. High-speed coating technology and processability, the structural design of coating, and the mechanical properties of resin are discussed. The adhesive strength with glass and the environmental stability are discussed.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

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