Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Endoscopic Imaging and Fabrication of Micro-endoscope Catheter in Time-domain Optical Coherence Tomography

시간영역 광 간섭 단층촬영 시스템의 소형 엔도스코프 제작 및 영상구현

  • Kim, Young-Kwan (College of Electronics and Information, Kyunghee University) ;
  • Lee, Sung-Hun (College of Electronics and Information, Kyunghee University) ;
  • Kim, Yong-Pyung (College of Electronics and Information, Kyunghee University)
  • 김영관 (경희대학교 전자정보대학) ;
  • 이성헌 (경희대학교 전자정보대학) ;
  • 김용평 (경희대학교 전자정보대학)
  • Received : 2010.07.26
  • Accepted : 2010.08.11
  • Published : 2010.10.25
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Abstract

We fabricated and characterized a compact endoscopic catheter for optical coherence tomography. The optical delay line (ODL), composed of a cylindrical piezoelectric transducer (PZT) and an optical fiber, was operated with a 1 kHz sinusoidal driving wave in the time-domain. When the ODL was driven with a sinusoidal wave function, the axial scanning speed was 6 m/s and the axial acquisition rate was 2000 line/s at a depth of about 3 mm. Endoscopic OCT images of a human finger and earhole were successfully obtained with an image rate of ten frames per second.

광 간섭 단층촬영 시스템(OCT)을 위한 소형의 광섬유 도관형 주사장치인 엔도스코프(endoscope catheter)를 제작하였다. 깊이방향 주사장치인 원통형 압전소자(PZT)를 이용한 광경로 지연기는 정현파 1 kHz로 구동하여 시간영역에서 엔도스코프 OCT 영상을 구현하였다. 정현파로 구동한 광경로 지연기의 속도는 6 m/s 이고, 깊이방향 스캐닝의 데이터 획득은 3 mm 기준에서 초당 2000 라인이다. 제작한 엔도스코프로 사람의 손가락 및 귀에 대한 초당 10프레임의 OCT 영상을 성공적으로 획득하였다.

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References

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