Title:
EXCITATION LIGHT GENERATION DEVICE AND EXCITATION LIGHT GENERATION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/162141
Kind Code:
A1
Abstract:
Provided is an excitation light generation device comprising: a first multi-mode laser that outputs first excitation light; a second multi-mode laser that outputs second excitation light; a first excitation current/temperature controller that controls the temperature and excitation current of the first multi-mode laser; a second excitation current/temperature controller that controls the temperature and excitation current of the second multi-mode laser; a first polarization-holding variable optical attenuator that adjusts light intensity while maintaining a linear polarization state for output; a second polarization-holding variable optical attenuator that adjusts light intensity while maintaining a linear polarization state for output; and a polarization multiplexing circuit that performs polarization multiplexing for output. The first excitation current/temperature controller and the second excitation current/temperature controller each perform control so as to prevent an overlap of longitudinal modes in the first excitation light and the second excitation light. The first polarization-holding variable optical attenuator and the second polarization-holding variable optical attenuator each perform control so as to achieve equal intensities.
Inventors:
KAWAKAMI HIROTO (JP)
KUWAHARA SHOICHIRO (JP)
KOBAYASHI TAKAYUKI (JP)
KISAKA YOSHIAKI (JP)
KUWAHARA SHOICHIRO (JP)
KOBAYASHI TAKAYUKI (JP)
KISAKA YOSHIAKI (JP)
Application Number:
PCT/JP2022/007892
Publication Date:
August 31, 2023
Filing Date:
February 25, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H01S3/0941; H01S3/10; H01S3/30
Domestic Patent References:
| WO2020141105A1 | 2020-07-09 |
Foreign References:
| JP2003188449A | 2003-07-04 | |||
| JPH11121849A | 1999-04-30 | |||
| JPH057047A | 1993-01-14 | |||
| JPH05136495A | 1993-06-01 |
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (JP)
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