Title:
OPTICAL AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2024/084592
Kind Code:
A1
Abstract:
An optical amplifier according to the present disclosure uses a utilization rate of excitation light in an OPA to cause the OPA to maximally and stably exhibit performance without extracting a part of signal light on a path of the signal light. The optical amplifier according to the present disclosure comprises two blocks, which are an excitation light generation unit and an optical parametric amplification unit. Further, a stabilization mechanism for excitation light output and a stabilization mechanism for the optical parametric amplifier are provided to each of the two blocks. A variable splitting-ratio coupler is provided between the two blocks and a splitting-ratio characteristic of the variable splitting-ratio coupler is used to control the two stabilization mechanisms mentioned above. Each stabilization mechanism includes control at a low speed for a temperature adjuster and control at a higher speed for a control target other than the temperature adjuster.
Inventors:
KASHIWAZAKI TAKAHIRO (JP)
UMEKI TAKESHI (JP)
UMEKI TAKESHI (JP)
Application Number:
PCT/JP2022/038806
Publication Date:
April 25, 2024
Filing Date:
October 18, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G02F1/39
Domestic Patent References:
| WO2012098911A1 | 2012-07-26 |
Foreign References:
| JP2014089254A | 2014-05-15 | |||
| CN112946968A | 2021-06-11 | |||
| JP2020076834A | 2020-05-21 | |||
| JP2011017911A | 2011-01-27 |
Attorney, Agent or Firm:
TANI & ABE, P.C. (JP)
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