Title:
ハイパワー用途向け光ファイバ
Document Type and Number:
Japanese Patent JP4744489
Kind Code:
B2
Abstract:
The specification describes optical fiber designs that overcome the problem of self-induced damage to optical fibers due to excessive self-focusing. The refractive index of these fiber designs is grossly non-uniform in the center core of the optical fiber. In one embodiment, the optical fiber is designed with a deliberate and steep core trench. In addition, the nominal core region of these optical fibers has a very large area. The combination of these two properties restricts a large portion of the optical power envelope to a core ring, with reduced optical power inside the core ring. These designs substantially reduce self-focusing in the optical fiber. Photonic systems employing optical fibers having these modified core designs are expected to be especially effective for transmitting high power, e.g., greater than 1 MW, with short pulse duration.
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Inventors:
David J. Degiovanni
Jaesh Jasapara
Andrew Day. Yabron
Jaesh Jasapara
Andrew Day. Yabron
Application Number:
JP2007198578A
Publication Date:
August 10, 2011
Filing Date:
July 31, 2007
Export Citation:
Assignee:
Furukawa Electric North America, Inc.
International Classes:
G02B6/02; G02B6/036
Domestic Patent References:
| JP10300966A | ||||
| JP9304640A | ||||
| JP2001051146A | ||||
| JP2001521204A | ||||
| JP2003517626A | ||||
| JP2004012685A | ||||
| JP2002296439A | ||||
| JP2002296440A |
Foreign References:
| WO1999018461A1 | ||||
| US5781684 | ||||
| WO2000051269A1 |
Other References:
光通信技術ハンドブック,2002年 1月30日,第1版,205頁~207頁
Attorney, Agent or Firm:
Okabe
Masao Okabe
Nobuaki Kato
Shinichi Usui
Takao Ochi
Asahi Shinmitsu
Katsumi Miyama
Masao Okabe
Nobuaki Kato
Shinichi Usui
Takao Ochi
Asahi Shinmitsu
Katsumi Miyama