Title:
OPTICAL AMPLIFICATION DEVICE, EXCITATION LIGHT SUPPLY METHOD, AND CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2018/097281
Kind Code:
A1
Abstract:
[Problem] To highly reliably supply excitation lights having differing distribution ratios to a plurality of fiber optic amplifiers. [Solution] The present invention has a plurality of fiber optic amplifiers (101, 112), and an asymmetric multiplexing optical system (100) which receives the input of a plurality of excitation lights (P1, P2) and which outputs a plurality of branched excitation lights (P12_C, P12_D) that are respectively supplied to the plurality of fiber optic amplifiers, wherein the asymmetric multiplexing optical system includes at least one two-input, two-output asymmetric multiplexer (100) that has an asymmetric branching ratio, and a desired intensity differential is set among the plurality of branching excitation lights by adjusting the intensity of at least one input light in the asymmetric multiplexer.
Inventors:
INADA YOSHIHISA (JP)
Application Number:
PCT/JP2017/042356
Publication Date:
May 31, 2018
Filing Date:
November 27, 2017
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H01S3/10; H01S3/067; H01S3/091
Domestic Patent References:
| WO2006085370A1 | 2006-08-17 |
Foreign References:
| JP2006012979A | 2006-01-12 | |||
| JP2004104473A | 2004-04-02 | |||
| US7460298B2 | 2008-12-02 | |||
| US6377394B1 | 2002-04-23 | |||
| US6049417A | 2000-04-11 | |||
| JP2006012979A | 2006-01-12 | |||
| JPH08304860A | 1996-11-22 | |||
| JP2016229938A | 2016-11-28 |
Attorney, Agent or Firm:
KATSURAGI Yuji (JP)
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