US 11,722,225 B2
Underwater optical communication device and underwater inspection system
Naoki Nishimura, Kyoto (JP); and Koji Tojo, Kyoto (JP)
Assigned to Shimadzu Corporation, Kyoto (JP)
Appl. No. 17/795,212
Filed by Shimadzu Corporation, Kyoto (JP)
PCT Filed Jan. 27, 2020, PCT No. PCT/JP2020/002849
§ 371(c)(1), (2) Date Jul. 25, 2022,
PCT Pub. No. WO2021/152677, PCT Pub. Date Aug. 5, 2021.
Prior Publication US 2023/0051043 A1, Feb. 16, 2023
Int. Cl. H04B 10/00 (2013.01); H04B 10/80 (2013.01); H04J 14/00 (2006.01)
CPC H04B 10/80 (2013.01) 7 Claims
OG exemplary drawing
 
1. An underwater optical communication device comprising:
a light-emitting element configured to emit communication light to a moving body as a communication target; and
an optical fiber arranged along an underwater structure extending in a predetermined direction, the optical fiber having a light incident end portion on which the communication light emitted from the moving body is incident and a tip end portion, the optical fiber being configured to transmit the communication light incident on the light incident end portion toward the tip end portion,
wherein the optical fiber is composed of:
a core part configured to transmit the communication light from the light incident end portion toward the tip end portion; and
a clad part covering the core part, the clad part being configured to emit at least a part of the communication light that transmits the core part from a side surface of the optical fiber.