A field‐usable optical fiber‐ribbon holder is proposed. Optical fiber ribbon is fixed by placement between wavy plates. The fiberfixing mechanism is analyzed theoretically and experimentally. Optimum fiber‐holder sizes are also investigated. Using this fiber holder, average and maximum fiber‐end displacement of 3.8 and 15μm are obtained. Lowloss splicing of SM fiber ribbon is confirmed, with average splice loss of 0.05 dB.
In optical fiber splicing, the fusion technique using gas discharge heating is considered a practical method from the viewpoints of operation and reliability. The fusion by which the splicing is made after pre‐shaping by a gas discharge on the optical fiber ends, has excellent features of low loss and stable splices. However, the splicing mechanism and the optimum splicing condition have not yet been analyzed sufficiently. This paper studies splicing conditions such as the pre‐fusion time, optical fiber stuffing length and shape‐up time of the optical fiber splicing by pre‐fusion method from the viewpoint of splicing shape, splice loss and core distortion. The optimum conditions for realizing a low‐loss splice are then determined. As a result, it is clarified that although the pre‐fusion method essentially becomes a mechanism for increasing the splice loss due to core distortion caused by pre‐fusion, there exists an optimum stuffing length for minimizing its effect. It is also shown that for performing stable, low‐loss splicing (even in the case where the condition of the optical fiber end is bad), it is proper to have a pre‐fusion of 0.3 ∼ 0.4 second. A foundation for the design of the splicing apparatus is obtained.
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