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Registered APPARATUS AND METHOD FOR ADJUSTING OPTICAL AXIS FOR OPTICAL WIRELESS COMMUNICATION IN FREE SPACE

Inventors
Heo Young Soon, Kim Sung Chang, Kang Hyun Seo, Yeo Chan Il, Ryu Ji Hyoung, Park Si Woong, Kyeeun Kim, Son Dong Hoon, Kim Jeong Eun, Keo Sik Kim, Min Gi Hyeon, Lee Mun Seob, Hyoungjun Park
Application No.
17002391 (2020.08.25)
Publication No.
20210063656 (2021.03.04)
Registration No.
11454770 (2022.09.27)
Country
UNITED STATES
Project Code
19ZK1100, Development of ICT Convergence Technology for Honam Regional Industry, Lee Gil Haeng
Abstract
Provided are an apparatus and method for adjusting an optical axis. In the apparatus, an iris diaphragm and a quadrant photodiode (QPD) are used to align optical axes of an optical system of the apparatus so that optical transmission efficiency between an optical transmitter and an optical receiver can be increased. Since a hole of the iris diaphragm can be adjusted to be small, a beam larger than a light-receiving area of the QPD can be included in the light-receiving area, and optical axis alignment is facilitated accordingly. When the QPD and the iris diaphragm are applied to the apparatus, it is possible to simultaneously perform data transmission, tracking, and optical axis alignment. An optical fiber end surface and optical axes of lenses arranged in parallel are aligned in the apparatus so that alignment between two terminals can be easy and reception efficiency can be increased.
KSP Keywords
Data transmission, Free Space, Optical Wireless, Optical Wireless Communications(OWC), Optical axis, Optical fiber, Optical receiver, Optical transmitters, Quadrant photodiode, an optical fiber, axis alignment, optical system, optical transmission, receiving area, transmission efficiency, wireless communication
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Status Patent Country KIPRIS
Registered Optical axis aligning apparatus and method in free space optical communication KOREA KIPRIS