Journal of the Microelectronics and Packaging Society (마이크로전자및패키징학회지)

The Korean Microelectronics and Packaging Society (한국마이크로전자및패키징학회)
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Design for High-Efficient Passive Optical PCB Interconnection by Using Built-in Lens Structure

렌즈 일체형 광도파로를 이용한 고효율 수동 광 PCB 접속 구조 설계

  • Kim, Dong-Min (Education program for SAMSUNG advanced integrated circuit, Pusan National University) ;
  • Lee, Tae-Kyoung (Education program for SAMSUNG advanced integrated circuit, Pusan National University) ;
  • Lee, Tae-Ho (The Institute of Opto-Mechatronics, Pusan National University) ;
  • Jeong, Myung-Yung (Department of Cogno-Mechatronics Engineering, Pusan National University)
  • 김동민 (부산대학교 차세대전자기판회로학과) ;
  • 이태경 (부산대학교 차세대전자기판회로학과) ;
  • 이태호 (부산대학교 광메카트로닉스연구소) ;
  • 정명영 (부산대학교 인지메카트로닉스공학과)
  • Received : 2012.05.29
  • Accepted : 2012.06.21
  • Published : 2012.06.30
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Abstract

Recently, by the increasing of data transmission rates, PCB is required high-speed data transmission rates and thin packaging. So optical PCB which is the combination of electrical layer and optical layer can be one of the solution to overcome the limitations of conventional electrical PCB. The most important factor in the implementation of optical PCB is optical interconnection. So the research on high-efficiency and passive alignment has been active. In this paper, we suggest built-in lens pluggable waveguide and we simulate its coupling efficiency and structural stability. Optical simulation results show that the proposed structure has higher efficiency than no lens structure about 1.86 times in transmitter and about 1.42 times in receiver. In structure simulation, inner lens has no damage in desorption process. Therefore, we shown that the proposed structure has a high coupling efficiency and structural stability.

최근 정보전송량이 증대됨에 따라 PCB는 고속 정보전송 및 박형화가 요구되고 있다. 하지만 기존의 전기적 PCB는 EMI, 실장밀도 등의 문제로 고속전송에 한계가 있어 기존의 전기 회로층에 광 회로층을 접목한 광 PCB가 그 해결책으로 대두되고 있다. 광 PCB 구현에서 가장 중요한 요소는 광 접속기술로 고효율, 수동정렬에 관한 연구가 활발히 이루어지고 있다. 따라서 본 논문에서는 광도파로에 렌즈를 일체형으로 제작하고 이를 보호하는 구조물을 정렬키로 사용한 장착형 광도파로 구조를 제안하였고, 광 및 구조 시뮬레이션을 통해 제안한 구조의 접속효율 및 구조적 안정성을 해석하였다. 광 시뮬레이션 결과 제안된 구조는 렌즈가 없는 구조와 비교해 송신부에서 약 1.86배, 수신부에서 약 1.42배의 높은 접속효율을 가지며, 구조 해석에서는 탈착과정에서 내부의 렌즈에 응력 및 변형이 발생하지 않음을 확인하였다. 따라서 본 논문에서 제안된 구조가 높은 접속효율을 가지고, 구조적 안정성을 가짐을 보였다.

Keywords

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