Title:
LIGHT AMPLIFIER, LIGHT TRANSMISSION SYSTEM, AND LIGHT AMPLIFICATION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/106031
Kind Code:
A1
Abstract:
To improve the detection accuracy of output fiber detachment for eye-safe function operation, this light amplifier for amplifying signal light is provided with: a drive unit in which excitation light for light amplification is modulated by an identification signal that identifies the light amplifier; a light amplification unit for amplifying the signal light through the use of the excitation light outputted from the drive unit, and outputting the amplified signal light as the output light to the outside; and a detection unit for detecting return light that propagates in a direction opposite to that of the output light, and controlling the output level of the excitation light so as to lower the output level when the identification signal of the light amplifier is included in the return light.
Inventors:
CHIKAMORI SHUN (JP)
Application Number:
PCT/JP2019/045919
Publication Date:
June 03, 2021
Filing Date:
November 25, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H01S3/067; H04B10/077
Domestic Patent References:
| WO2004045116A1 | 2004-05-27 |
Foreign References:
| JPH0927975A | 1997-01-28 | |||
| JP2005019567A | 2005-01-20 | |||
| US5940209A | 1999-08-17 |
Attorney, Agent or Firm:
MURAKAMI, Kanako et al. (JP)
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