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Proceedings Paper

Joining techniques for small-diameter optical fiber used in embedded sensor
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Paper Abstract

Small-diameter optical fiber with a 40-μm cladding diameter is suitable for an embedded sensor in a composite material, because it has high sensitivity and does not induce mechanical deterioration inside the structure. The bare small-diameter fiber outside the structure, however, is too fragile and hard to handle. In practical use, the small-diameter fiber needs to be joined to a normal optical fiber with a 125-μm cladding diameter. This paper presents estimation results of the joint loss between the small-diameter optical fiber and the normal optical fiber and two practical joining techniques, a detachable connector method and a permanent fused splice method. The joint losses were less than 1 dB for the both joining methods. These joining techniques promote the usage of the small-diameter optical fiber for practical heath monitoring systems.

Paper Details

Date Published: 23 May 2005
PDF: 4 pages
Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.623628
Show Author Affiliations
Seiji Kojima, Hitachi Cable, Ltd. (Japan)
Sinji Komatsuzaki, Hitachi Cable, Ltd. (Japan)
Akihito Hongo, Hitachi Cable, Ltd. (Japan)
Nobuo Takeda, The Univ. of Tokyo (Japan)
Tateo Sakurai, RIMCOF (Japan)


Published in SPIE Proceedings Vol. 5855:
17th International Conference on Optical Fibre Sensors
Marc Voet; Reinhardt Willsch; Wolfgang Ecke; Julian Jones; Brian Culshaw, Editor(s)

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