US 12,085,757 B2
Optical fiber fusion splicing device, and fusion splicing method for optical fiber
Hiroki Akiyama, Yokohama (JP); Hideaki Yusa, Yokohama (JP); Ryosuke Meo, Yokohama (JP); and Hiroshi Takayanagi, Yokohama (JP)
Assigned to SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD., Yokohama (JP)
Appl. No. 17/608,026
Filed by SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD., Yokohama (JP)
PCT Filed Jun. 5, 2020, PCT No. PCT/JP2020/022271
§ 371(c)(1), (2) Date Nov. 1, 2021,
PCT Pub. No. WO2020/246576, PCT Pub. Date Dec. 10, 2020.
Claims priority of application No. 2019-105103 (JP), filed on Jun. 5, 2019.
Prior Publication US 2022/0317376 A1, Oct. 6, 2022
Int. Cl. G02B 6/255 (2006.01)
CPC G02B 6/2553 (2013.01) [G02B 6/2551 (2013.01); G02B 6/2552 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A fusion splicing method for optical fibers for fusion splicing, by an arc discharge generated between a pair of electrodes, a plurality of pairs of optical fibers arranged so that end surfaces thereof face each other between a pair of electrodes, the fusion splicing method comprising:
a first step of generating a discharge between the pair of electrodes;
a second step of stopping the discharge between the pair of electrodes; and
a third step of generating the arc discharge between the pair of electrodes and fusing and splicing the plurality of pairs of optical fibers to each other, wherein
a discharge time of the first step is greater than 0 milliseconds and less than or equal to 200 milliseconds, and a time from stopping the discharge of the first step to starting the arc discharge of the third step is greater than 0 milliseconds and less than or equal to 50 milliseconds,
the discharge time of the first step is shorter than a discharge time of the third step, and
a power of the discharge in the first step is set to be greater than a power of the arc discharge in the third step.