The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 27, 2022
Filed:
Aug. 25, 2020
Electronics and Telecommunications Research Institute, Daejeon, KR;
Young Soon Heo, Gwangju, KR;
Sung Chang Kim, Gwangju, KR;
Hyun Seo Kang, Gwangju, KR;
Chan Il Yeo, Gwangju, KR;
Ji Hyoung Ryu, Jeonju, KR;
Si Woong Park, Gwangju, KR;
Kye Eun Kim, Naju, KR;
Keo Sik Kim, Gwangju, KR;
Jeong Eun Kim, Gwangju, KR;
Gi Hyeon Min, Gwangju, KR;
Hyoung Jun Park, Gwangju, KR;
Dong Hoon Son, Gwangju, KR;
Mun Seob Lee, Daejeon, KR;
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon, KR;
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.