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US6978072: Rare-earth doped optical fiber module and manufacturing method therefor

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Filing Information

Inventor(s) Tadao Arima ·
Assignee(s) Fujitsu Limited ·
Attorney/Agent(s) Katten Muchin Rosenman LLP ·
Primary Examiner John D. Lee ·
Assistant Examiner Daniel Petkovsek ·
Application Number US10928854
Filing date 08/27/2004
Issue date 12/20/2005
Prior Publication Data
Predicted expiration date 04/19/2022
U.S. Classifications 385/135  · 242/570  · 385/137  · 385/134  ·
International Classifications --
Kind CodeB2
International Classifications 385134 · 385136 · 385137 · 3593411 · 252570 ·
Related U.S. Application DataThis is a continuation of International PCT Application No. PCT/JP02/03929, filed Apr. 19, 2002, which was not published in English.
Foreign Priority JP0203929 - 04/19/2002 ·
3 Claims, 6 Drawings


Abstract

A rare-earth doped optical fiber module including a resin reel having elasticity and a rare-earth doped optical fiber wound around the resin reel. The rare-earth doped optical fiber module further includes a single-mode optical fiber spliced to the rare-earth doped optical fiber and wound around the resin reel. The resin reel is formed of silicone rubber, fluororubber, or soft PVC.

Independent Claims | See all claims (3)

  1. 1. A manufacturing method for a rare-earth doped optical fiber module, comprising the steps of: setting a resin reel having elasticity on a metal reel whose diameter is changeable between a first diameter and a second diameter larger than said first diameter; increasing the diameter of said metal reel to said second diameter to thereby increase the diameter of said resin reel; winding a rare-earth doped optical fiber around said resin reel; decreasing the diameter of said metal reel to said first diameter; and removing said resin reel having said rare-earth doped optical fiber from said metal reel.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US5703990* Lucent Technologies Inc. Robertson et al. Dec 1997
US6038362* NGK Insulators, Ltd. Toyoda et al. Mar 2000
US6201923* Hitachi Cable, Ltd. Yuhara et al. Mar 2001
US6546180* Sumitomo Electric Industries, Ltd. Koyano et al. Apr 2003
US20030059192* Johnson Mar 2003

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
JP524850Jan 1977
JP03121426SUMITOMO ELECTRIC IND LTDMay 1991
JP07183597SHIN ETSU CHEM CO LTDJul 1995
JP08000580MATSUSHITA ELECTRIC WORKS LTDJan 1996
JP08005858FUJITSU LTDJan 1996
JP09055556OKI ELECTRIC IND CO LTDFeb 1997
JP10132579TOKIMEC INCMay 1998
JP10239532NIPPON TELEGR & TELEPH CORP Sep 1998
JP11295079TAMAGAWA SEIKI CO LTDOct 1999
JP2000131079HITACHI CABLE LTDMay 2000
JP2001111150NEC CORPApr 2001
JP2001311833OYOKODEN LAB CO LTDSep 2001
JP2001326406MITSUBISHI CABLE IND LTDNov 2001
* cited by examiner

Referenced By

Document NumberAssigneeInventorsIssue/Pub Date
US7548679 Sumitomo Electric Industries, Ltd. Masaaki Hirano et al. Jun 2009
US7899296 Fujitsu Limited Norifumi Shukunami et al. Mar 2011

Patent Family

Document NumberAssigneeInventorsIssue/Pub Date
US20050031286 Tadao Arima Feb 2005
US6978072 Fujitsu Limited Tadao Arima Dec 2005
JP3961487 Aug 2007