OPTICAL FIBER FOR COUPLING AND OPTICAL FIBER ARRAY

PROBLEM TO BE SOLVED: To provide an optical fiber array capable of increasing optical coupling efficiency without precisely performing dimension doubling of a length direction of optical fiber.SOLUTION: An optical fiber array 1 includes: a V-groove substrate 2 on which a V-groove 3 is formed; an opt...

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Bibliographic Details
Main Author KUMAGAI TOSHIKI
Format Patent
LanguageEnglish
Japanese
Published 14.09.2017
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Summary:PROBLEM TO BE SOLVED: To provide an optical fiber array capable of increasing optical coupling efficiency without precisely performing dimension doubling of a length direction of optical fiber.SOLUTION: An optical fiber array 1 includes: a V-groove substrate 2 on which a V-groove 3 is formed; an optical fiber core wire 61 that is attached and fixed in the V-groove 3; and a presser-foot substrate 4 that interleaves the optical fiber core wire 61 and is attached and fixed on a surface of the V-groove substrate 2. The optical fiber core wire 61 includes a small core diameter first optical fiber core wire 11 whose apical surface 11a is exposed from an end surface 2b of the V-groove substrate 2 and a large core diameter second optical fiber core wire 12 that is coaxially fused onto a rear end surface thereof.SELECTED DRAWING: Figure 2 【課題】光ファイバの長さ方向の寸法合わせを高い精度で行うことなく、光結合効率を高めることの可能な光ファイバアレイを提供すること。【解決手段】光ファイバアレイ1は、V溝3が形成されているV溝基板2と、V溝3内に接着固定された光ファイバ心線61と、光ファイバ心線61を挟みV溝基板2の表面に接着固定された押さえ基板4とを有している。光ファイバ心線61は、V溝基板2の端面2bから先端面11aが露出する小さなコア径の第1光ファイバ心線11と、この後端面に同軸に融着されたコア径の大きな第2光ファイバ心線12とを備えている。【選択図】図2
Bibliography:Application Number: JP20140148512