Title:
OPTICAL FIBER AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2010/079773
Kind Code:
A1
Abstract:
Provided is an optical fiber amplifier wherein oscillation of ASE can be suppressed.
An optical fiber amplifier is provided with: a second amplifying fiber (30) having a rare-earth element added therein; a second excitation light source (26) which supplies the second amplifying fiber (30) with excitation light; a storage section (40) which stores the relationship between an oscillation threshold excitation power, i.e., the power of excitation light with which the ASE in a wavelength band different from a signal wavelength band generated from the second amplifying fiber (30) is oscillated, and the temperature of the second amplifying fiber (30); and a temperature control section (38), which controls the temperature of the second amplifying fiber (30) so as to have the oscillation threshold excitation power is larger than the power of the excitation light outputted from the second excitation light source (26) by referring to the relationship stored in the storage section (40).
Inventors:
MIYAUCHI HIDENORI (JP)
Application Number:
PCT/JP2010/050013
Publication Date:
July 15, 2010
Filing Date:
January 05, 2010
Export Citation:
Assignee:
FUJIKURA LTD (JP)
MIYAUCHI HIDENORI (JP)
MIYAUCHI HIDENORI (JP)
International Classes:
H01S3/10
Foreign References:
| JPH05167144A | 1993-07-02 |
Other References:
BERTRAND MORASSE ET AL.: "10W ASE-free single- mode high-power double-cladding Er3+-Yb3+ amplifier", PROCEEDINGS OF SPIE, vol. 6453, 23 February 2007 (2007-02-23), XP008152324
QUING WANG ET AL.: "Er-Yb double-clad fiber amplifier", OPTICAL ENGINEERING, vol. 43, no. 5, May 2004 (2004-05-01), pages 1030 - 1034, XP008152325
L. LUO ET AL.: "Strong near-infrared photoluminescence in erbium/ytterbium codoped porous silicon", APPLIED PHYSICS LETTERS, vol. 86, 19 May 2005 (2005-05-19), XP012065655
QUING WANG ET AL.: "Er-Yb double-clad fiber amplifier", OPTICAL ENGINEERING, vol. 43, no. 5, May 2004 (2004-05-01), pages 1030 - 1034, XP008152325
L. LUO ET AL.: "Strong near-infrared photoluminescence in erbium/ytterbium codoped porous silicon", APPLIED PHYSICS LETTERS, vol. 86, 19 May 2005 (2005-05-19), XP012065655
Attorney, Agent or Firm:
MORIMURA Yasuo et al. (JP)
Yasuo Morimura (JP)
Yasuo Morimura (JP)
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