Title:
LASER DEVICE AND MANUFACTURING METHOD THEREOF
Document Type and Number:
Japanese Patent JP2020150165
Kind Code:
A
Abstract:
To provide a laser device capable of adjusting a spread angle with a simple configuration.SOLUTION: A laser device 1 includes a laser unit 2 that outputs a laser beam, an exit end 5 that emits a laser beam, and a first fusion splicer P1 and a second fusion splicer P2 in which two multimode fibers having a core through which a laser beam propagates and a clad surrounding the core are fused and connected to each other. At least a part of the core in the first fusion splicer P1 contains a dopant similar to the dopant contained in the clad in the first fusion splicer P1 to reduce the refractive index. The refractive index profile is different between the core in the first fusion splicer P1 and the core in the second fusion splicer P2.SELECTED DRAWING: Figure 1
Inventors:
YAMAGUCHI YUTAKA
SAKAMOTO SHINICHI
CHIBA YASUTO
KISHI TATSUYA
SAKAMOTO SHINICHI
CHIBA YASUTO
KISHI TATSUYA
Application Number:
JP2019047411A
Publication Date:
September 17, 2020
Filing Date:
March 14, 2019
Export Citation:
Assignee:
FUJIKURA LTD
International Classes:
H01S3/10; G02B6/02; G02B6/255; G02B6/26
Domestic Patent References:
| JP2012510176A | 2012-04-26 | |||
| JP2017116465A | 2017-06-29 | |||
| JP2001051148A | 2001-02-23 | |||
| JPH05288968A | 1993-11-05 |
Foreign References:
| WO2018042788A1 | 2018-03-08 | |||
| US20180224607A1 | 2018-08-09 |
Attorney, Agent or Firm:
Sumio Tanai
Mitsunaga Igarashi
Toshio Komuro
Yuichiro Shimizu
Mitsunaga Igarashi
Toshio Komuro
Yuichiro Shimizu