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optical fiber
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Fiber fuse propagation modes for typical single-mode fibers
Description/Abstract:
The precise measurement of fusing speed revealed that its behavior varies depending on the plasma volume per pump beam diameter. Irregul...
Keyword:
fiber fuse
,
optical fiber
,
propagation modes
, and
void formation
Resource Type:
Poster
Author:
TODOROKI, Shin-ichi
Date Uploaded:
04/02/2023
Fiber fuse behavior veiled in its strong light emission
Description/Abstract:
Fiber fuse was discovered in 1987 and now poses a dilemma to the optical communication industry as a result of the expected saturation o...
Keyword:
fiber fuse
,
light-induced damage
,
optical fiber
, and
self-pumping
Resource Type:
Presentation
Author:
TODOROKI, Shin-ichi
Date Uploaded:
03/02/2023
Light and voids of fiber fuse: precise comparison of in situ image and fused fibers
Description/Abstract:
The damped oscillation of a fiber fuse light emission does not overlap the scattering pattern of the following periodic voids. This may ...
Keyword:
fiber fuse
,
in-situ observation
,
laser-induced damage
,
optical fiber
, and
void formation
Resource Type:
Presentation
Author:
TODOROKI, Shin-ichi
Date Uploaded:
01/02/2023
ファイバフューズの伝搬挙動
Description/Abstract:
1987年に発見されたファイバフューズ現象に関する研究発表数が増加しはじめたのは2003年。今年3月にはOITDA規格技術資料が発行されるまでになった。本報告ではこれを補足する内容を述べる。ファイバフューズのマクロな伝搬挙動は、散逸ソリトンとして理解することができる。そこで...
Keyword:
dissipative soliton
,
fiber fuse
,
in situ observation
, and
optical fiber
Resource Type:
Conference Proceeding
Creator:
轟 眞市
Date Uploaded:
05/02/2020
Date Modified:
15/06/2020
Date Created:
28/07/2020
高校生に「光ファイバー通信の父」がノーベル賞を貰った理由を説明するには
Description/Abstract:
高校生の見学対応を引き受けた折に、今年のノーベル物理学賞はチャールズ・カオ教授に贈られるというニュースが飛び込んできた。高校一年生である彼らにその意味を分かってもらうために、光ファイバの歴史と日本の技術者の貢献を語り、レーザーポインタを活用したデモンストレーションを行った。
Keyword:
Charles Kao
,
Nobel prizes
, and
optical fiber
Resource Type:
Other
Creator:
轟 眞市
Journal:
マテリアルインテグレーション
Date Uploaded:
05/02/2020
Date Modified:
15/06/2020
Date Created:
28/07/2020
孔のあいた光ファイバ明暗二題―ホーリーファイバとファイバフューズ
Description/Abstract:
通信用光ファイバに関する話題として、孔を空けて特異な物性を引き出すホーリーファイバと、光による破壊の連鎖で孔が空いていくファイバフューズを紹介する。波長変換素子や超広帯域光源への応用を目指した、非線型光学係数の大きい材料を使ったフォトニック結晶光ファイバの最近の動向を概観す...
Keyword:
fiber fuse
,
holey fiber
,
non-liner fiber
, and
optical fiber
Resource Type:
Article
Creator:
轟 眞市
Journal:
繊維学会誌
Date Uploaded:
05/02/2020
Date Modified:
15/06/2020
シリカガラスファイバへの低融点ガラスの融着とその光学的評価
Description/Abstract:
テルライトガラス融液を2本のシリカガラス製光ファイバの端面間に固着して得 た素子の光透過・反射特性を調べた。前者の熱膨張率が2桁大きいにもかかわら ず、冷却時の収縮による破損や気泡の無い良好な構造を得ることができた。この 素子はテルライトガラス部において導波構造を持たないた...
Keyword:
optical fiber
,
splicing
, and
tellurite glass
Resource Type:
Conference Proceeding
Creator:
井上 悟
,
貫井 昭彦
, and
轟 眞市
Date Uploaded:
05/02/2020
Date Modified:
15/06/2020
ACTIVE SOFT GLASS meets PASSIVE OPTICAL FIBERS
Keyword:
optical fiber
and
tellurite glass
Resource Type:
Conference Proceeding
Creator:
TODOROKI, Shin-ichi
Date Uploaded:
05/02/2020
Date Modified:
15/06/2020
光ファイバーの自壊連鎖現象〜ファイバーフューズ〜
Description/Abstract:
ファイバフューズ現象の発見から今に至る歴史的背景、発生のメカニズム、生成する空孔列が特異な形状となる理由を、筆者の最新の研究に触れつつ簡潔にまとめた。
Keyword:
fiber fuse
and
optical fiber
Resource Type:
Article
Creator:
轟 眞市
Journal:
O plus E
Date Uploaded:
05/02/2020
Date Modified:
15/06/2020
Observation of Blowing Out in Low Loss Passive Optical Fuse Formed in Silica Glass Optical Fiber Circuit
Description/Abstract:
Low loss (less than 1 dB) passive optical fuses were realized by inserting 50-um-thick TeO2 glass layer into a single-mode silica glass f...
Keyword:
carbon
,
hybrid device
,
optical fiber
,
optical fuse
, and
tellurium oxide glass
Resource Type:
Article
Creator:
INOUE, Satoru
and
TODOROKI, Shin-ichi
Journal:
Jpn. J. Appl. Phys.
Date Uploaded:
05/02/2020
Date Modified:
15/06/2020
Optical fuse made of silica glass optical fibers spliced through low-melting glass with carbon-coating
Description/Abstract:
Light-induced breakdown of low-melting glass with thickness of 50 um is demonstrated, which was coated with carbon paint and formed betwe...
Keyword:
light-induced deformation
,
low melting glass
,
optical fiber
,
optical fuse
, and
telluria glass
Resource Type:
Article
Creator:
TODOROKI, Shin-ichi
and
INOUE, Satoru
Date Uploaded:
05/02/2020
Date Modified:
15/06/2020
Optical fuse by carbon-coated TeO2 glass segment inserted in silica glass optical fiber circuit
Description/Abstract:
Excessive-light-induced melt down was observed in a carbon-coated TeO2 glass segment formed between a pair of optical fiber end-faces. T...
Keyword:
carbon
,
hybrid device
,
optical fiber
,
optical fuse
, and
tellurium oxide glass
Resource Type:
Article
Creator:
INOUE, Satoru
and
TODOROKI, Shin-ichi
Journal:
Jpn. J. Appl. Phys.
Date Uploaded:
05/02/2020
Date Modified:
15/06/2020
Low loss optical coupling structure between two ends of silica glass optical fibers by inserting TeO2 melt
Description/Abstract:
Less than 1.5dB of insertion loss was realized in an optical coupling structure in which two TEC (Thermal-diffusion Expanded Core) fibers...
Keyword:
optical fiber
and
tellurite glass
Resource Type:
Article
Creator:
INOUE, Satoru
and
TODOROKI, Shin-ichi
Journal:
J. Non-Cryst. Solids
Date Uploaded:
05/02/2020
Date Modified:
15/06/2020
Formation of optical coupling structure between two ends of silica glass optical fibers by inserting tellurite glass melt
Description/Abstract:
Several nano liters of tellurite glass melt was inserted and quenched between two ends of silica glass optical fibers to form a optical ...
Keyword:
optical fiber
,
tellurite glass
, and
thermal expansion
Resource Type:
Article
Creator:
INOUE, Satoru
,
TODOROKI, Shin-ichi
, and
NUKUI, A.
Journal:
J. Ceram. Soc. Jpn.
Date Uploaded:
05/02/2020
Date Modified:
15/06/2020
Fiber Fuse Propagation Behavior
Description/Abstract:
Knowledge accumulated about fiber fuse propagation since 1988 is briefly summarized. From a macroscopic viewpoint, the dissipative solit...
Keyword:
fiber fuse
,
laser-induced damage
, and
optical fiber
Resource Type:
Part of Book
Creator:
TODOROKI, Shin-ichi
Journal:
Selected Topics on Optical Fiber Technology
Date Uploaded:
05/02/2020
Date Modified:
15/06/2020
ファイバヒューズの伝搬挙動
Description/Abstract:
1988年以降のファイバヒューズの伝搬に関する知見を簡単にまとめた。この奇妙 な現象は、巨視的に見れば、散逸ソリトンという概念と野火との類似性に着目す ることで容易に理解できる。熱で誘起されたシリカガラスの強い光吸収と、レー ザーエネルギーの極度に集中した供給が、閉じ込めら...
Keyword:
fiber fuse
,
laser-induced damage
, and
optical fiber
Resource Type:
Part of Book
Creator:
TODOROKI, Shin-ichi
Journal:
Selected Topics on Optical Fiber Technology
Date Uploaded:
05/02/2020
Date Modified:
15/06/2020
Formation of optical coupling structure between two ends of silica glass optical fibers by inserting tellurite glass melt
Description/Abstract:
Several nano liters of tellurite glass melt (xTeO2 - (100 - x)ZnO, x = 80,90,100 in mol%) were inserted and quenched between tow ends of ...
Keyword:
insertion loss
,
optical fiber
,
tellurite glass
, and
thermal expansion coefficient
Resource Type:
Conference Proceeding
Creator:
TODOROKI, Shin-ichi
Journal:
Proceedings of SPIE
Date Uploaded:
04/10/2019
Date Modified:
15/06/2020
ファイバフューズの伝搬モードと自己ポンプ効果
Description/Abstract:
伝搬光のエネルギーを消費しながらコア部分の溶融点が移動するファイバフューズと呼ばれる現象について最近明らかになってきたことを解説する。通信用単一モード光ファイバにおける伝搬モードは、閉じ込められたプラズマの大きさによって3種類に分類でき、それぞれ異なる振る舞いをする。損傷空...
Keyword:
fiber fuse
,
laser-induced breakdown
,
optical fiber
, and
propagation modes
Resource Type:
Conference Proceeding
Creator:
轟 眞市
Journal:
レーザー学会学術講演会第34回年次大会予稿集
Date Modified:
15/06/2020
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