Title:
LIGHT ATTENUATABLE OPTICAL FIBER
Document Type and Number:
Japanese Patent JP3209497
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To lessen the influence of the clad mode which occurs at the connec tion.
SOLUTION: This light attenuatable optical fiber consists of a core 1 and a clad which encloses this core 1 and has the refractive index lower than the refractive index of the core near the core 1. The clad has an inner clad 2 and a low-refractive index part 4 which is disposed on the outer side of this inner clad and has the refractive index smaller than the refractive index of the inner clad. The fiber contains a dopant to attenuate light signals in part or the whole of the core 1 and the inner clad 2.
Inventors:
Yoshiaki Takeuchi
Ryo Nagase
Nariyuki Mitaji
Yuichi Morishita
Akira Kumagai
Yumi Ariga
Kenichi Muta
Masashi Saijo
Kazunari Sugi
Ryo Nagase
Nariyuki Mitaji
Yuichi Morishita
Akira Kumagai
Yumi Ariga
Kenichi Muta
Masashi Saijo
Kazunari Sugi
Application Number:
JP12663396A
Publication Date:
September 17, 2001
Filing Date:
May 22, 1996
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
Showa Electric Cable Co., Ltd.
Showa Electric Cable Co., Ltd.
International Classes:
G02B6/00; G02B6/036; G02B6/26; (IPC1-7): G02B6/00
Domestic Patent References:
| JP542754A | ||||
| JP743533A | ||||
| JP1114808A | ||||
| JP63313102A | ||||
| JP574006A | ||||
| JP5264816A |
Attorney, Agent or Firm:
Shuuki Akita
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