Multi-Glass-Rod Optical-Fiber Splicers and Connectors Made by Drawing Technique

Shinji NAGASAWA  Hisashi MURATA  

IEICE TRANSACTIONS (1976-1990)   Vol.E66   No.5   pp.305-312
Publication Date: 1983/05/25
Online ISSN: 
Print ISSN: 0000-0000
Type of Manuscript: PAPER
Category: Optical and Quantum Electronics

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New splicers and connectors for multimode fibers have been fabricated. They contain precision multi-glass-rod arrangement, made by drawing, for aligning the fibers. In the multirod fabrication, the rod deformation of pyrex glass due to fusing is less than 1% in the rod array direction, in the 9001000 heating temperature range. The small deformation of 1% has no effect on splicing loss and fiber setting on the fabricated grooves. The multirod arrangement exhibits about 1 µm fabrication precision, because of the scaling down effect due to the drawing process. The splicers using a linear-multi-glass-rod arrangement exhibit 0.1 dB average splicing losses and slight loss fluctuation, less than 0.05 dB, in the 20 +60 temperature range. The connectors using a polygonal-multi-glass-rod arrangement exhibit 0.2 dB average connecting losses with index matching and 3.5 µm average off-axes. The splicers and connectors are potentially low in cost.