JP2011128377A - 光ファイバ心線 - Google Patents
光ファイバ心線 Download PDFInfo
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4479—Manufacturing methods of optical cables
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02395—Glass optical fibre with a protective coating, e.g. two layer polymer coating deposited directly on a silica cladding surface during fibre manufacture
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4403—Optical cables with ribbon structure
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Abstract
高湿度状態や水浸状態においても伝送ロスが増加しにくい光ファイバ心線を提供する。
【解決手段】
本発明の光ファイバ着色心線22は、少なくとも軟質層と硬質層との2層の被覆層により被覆されたガラス光ファイバからなる光ファイバ素線14に着色層を塗布してなる光ファイバ着色心線22であって、光ファイバ着色心線22の着色層を塗布した後の被覆層と着色層を塗布する前の光ファイバ素線14の被覆層との熱膨張係数の比が0.87以上である。また、本発明の光ファイバテープ心線32は、光ファイバ着色心線22を複数本平面状に並べ、テープ樹脂により一括被覆してなる光ファイバ心線32であって、光ファイバ着色心線22の着色層を塗布した後の被覆層と着色層を塗布する前の光ファイバ素線の被覆層との熱膨張係数の比が0.90以上である。
【選択図】図2
Description
熱機械分析装置(メトラー・トレド(株)TMA40)を用いて光ファイバの被覆層のみの熱膨張量(μm)を測定した。測定条件は、以下の通りである。
測定条件:付加荷重0荷重、温度範囲−100〜100℃、昇温速度10℃/min
長さ約1mの光ファイバ着色心線あるいは光ファイバテープ心線を60℃に加熱した水に浸漬し、30日後の伝送ロスを測定した。伝送ロスの測定は、アンリツ(株)製光パルス試験器MW9060Aを用いて、光後方散乱損失係数(OTDR)法により、波長1.55μmを用いて測定した。そして、60℃の温水に30日間浸漬した後、伝送ロスが0.1dB/km以上増加していると認められた場合には、使用環境に対する耐性がないと判断し、表1には×印で記した。さらに、60℃の温水に30日間浸漬した後、伝送ロスが0.1dB/km以上増加していると認められず、90日間浸漬した後、伝送ロスが0.1dB/km以上増加していると認められた場合には、使用環境に対する耐性を満足していると判断し、表1には○印を記した。さらに、60℃の温水に30日間浸漬した後、伝送ロスが0.1dB/km以上増加していると認められず、90日間浸漬した後も、伝送ロスが0.1dB/km以上増加していると認められない場合には、使用環境に対する耐性を十二分に満足していると判断し、表1には◎印で記した。また、試験後の光ファイバ着色心線あるいは光ファイバテープ心線を光学顕微鏡にて観察することで、より光ファイバ心線のガラスと被覆層との界面で剥離が発生していることを確認した。
11 ガラス光ファイバ
12 プライマリ層
13 セカンダリ層
14 光ファイバ素線
20 光ファイバ素線に着色層を塗布した後の被覆層
21 着色層
22 光ファイバ着色心線
31 テープ樹脂
32 光ファイバテープ心線
Claims (2)
- 少なくとも軟質層と硬質層との2層の被覆層により被覆されたガラス光ファイバからなる光ファイバ素線に着色層を塗布してなる光ファイバ着色心線であって、前記着色層を塗布する前の光ファイバ素線の被覆層の熱膨張係数に対する前記着色層を塗布した後の被覆層の熱膨張係数の比が0.87以上であることを特徴とする光ファイバ着色心線。
- 請求項1記載の光ファイバ着色心線を複数本平面状に並べ、テープ樹脂により一括被覆してなる光ファイバテープ心線であって、前記光ファイバ素線の被覆層の熱膨張係数に対する前記光ファイバ着色心線の着色層を塗布した後の被覆層の熱膨張係数の比が0.90以上であることを特徴とする光ファイバテープ心線。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2009286824A JP5323664B2 (ja) | 2009-12-17 | 2009-12-17 | 光ファイバ心線 |
PCT/JP2010/067648 WO2011074315A1 (ja) | 2009-12-17 | 2010-10-07 | 光ファイバ心線 |
US13/101,377 US8571372B2 (en) | 2009-12-17 | 2011-05-05 | Optical fiber |
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JP2009286824A JP5323664B2 (ja) | 2009-12-17 | 2009-12-17 | 光ファイバ心線 |
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JP2011128377A true JP2011128377A (ja) | 2011-06-30 |
JP5323664B2 JP5323664B2 (ja) | 2013-10-23 |
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JP2009286824A Active JP5323664B2 (ja) | 2009-12-17 | 2009-12-17 | 光ファイバ心線 |
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JP (1) | JP5323664B2 (ja) |
WO (1) | WO2011074315A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014525052A (ja) * | 2011-07-06 | 2014-09-25 | オーエフエス ファイテル,エルエルシー | 光ファイバのためのuv硬化アクリレート・バッファ被覆 |
WO2018062365A1 (ja) * | 2016-09-30 | 2018-04-05 | 株式会社フジクラ | 光ファイバリボン、光ファイバケーブル、および光ファイバリボンの製造方法 |
WO2018062364A1 (ja) * | 2016-09-30 | 2018-04-05 | 株式会社フジクラ | 光ファイバ着色心線、光ファイバケーブル、および光ファイバ着色心線の製造方法 |
Families Citing this family (168)
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JP5255690B2 (ja) | 2011-12-27 | 2013-08-07 | 古河電気工業株式会社 | 光ファイバ着色心線、光ファイバテープ心線および光ファイバケーブル |
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