US 11,929,786 B2
Optical communication device
Naoki Nishimura, Kyoto (JP); and Takao Sawa, Yokosuka (JP)
Assigned to Shimadzu Corporation, Kyoto (JP); and JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGY, Yokosuka (JP)
Appl. No. 17/772,075
Filed by SHIMADZU CORPORATION, Kyoto (JP); and JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGY, Yokosuka (JP)
PCT Filed Nov. 8, 2019, PCT No. PCT/JP2019/043897
§ 371(c)(1), (2) Date Apr. 26, 2022,
PCT Pub. No. WO2021/090481, PCT Pub. Date May 14, 2021.
Prior Publication US 2022/0376796 A1, Nov. 24, 2022
Int. Cl. H04B 10/60 (2013.01); G02B 6/42 (2006.01); H04B 10/80 (2013.01)
CPC H04B 10/60 (2013.01) [G02B 6/4206 (2013.01); H04B 10/80 (2013.01)] 5 Claims
OG exemplary drawing
 
1. An optical communication device comprising:
a plurality of light-receiving elements each configured to receive communication light from a moving body, the plurality of light-receiving elements being provided so as to correspond to a plurality of channels;
a controller configured to perform control to invalidate output from a light-receiving element that has received high-intensity light higher in light intensity than a predetermined value among the plurality of light-receiving elements; and
a plurality of optical fibers configured to guide the communication light to the plurality of light receiving elements, the plurality of optical fibers being provided so as to correspond to the plurality of light receiving elements, wherein
at least some of light-incident end portions of the plurality of optical fibers are arranged at different positions in water.