한국인터넷방송통신학회논문지 (The Journal of the Institute of Internet, Broadcasting and Communication)

  • 제12권1호
  • /
  • Pages.165-172
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  • 2012
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  • 2289-0238(pISSN)
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  • 2289-0246(eISSN)
한국인터넷방송통신학회 (The Institute of Internet, Broadcasting and Communication)
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Ti:LiNbO3 비대칭 Mach-Zehnder 간섭기와 분할 전극구조를 이용한 집적광학 전계센서의 감지부에 관한 연구

A Study on the Sensing Part of Integrated-Optic Electric Field Sensor Utilizing Ti:LiNbO3 Asymmetric Mach-Zehnder Interferometer and Segmented Electrode Structure

  • 정홍식 (홍익대학교 전자전기공학과) ;
  • 김영주 (홍익대학교 전자전기공학과)
  • Jung, Hong-Sik (Dept. of Electronic and Electrical Engineering, Hansung University) ;
  • Kim, Young-Ju (Dept. of Electronic and Electrical Engineering, Hansung University)
  • 투고 : 2011.12.01
  • 심사 : 2012.02.10
  • 발행 : 2012.02.29
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초록

$1.3{\mu}m$ 파장에서 동작하는 비대칭 Mach-Zehnder 간섭기에 분할전극 구조를 배열하여 전계 측정시스템의 감지부를 설계, 제작하였다. BPM 전산모사를 통해서 소자를 설계하였고, $LiNbO_3$에 Ti 확산방법으로 구현된 채널 광도파로에 집중 전극구조를 배열하여 집적광학 칩을 제작하였다. ${\pi}/2$ 위상차를 갖도록 설계된 비대칭 구조에서는 DC 0V에서 측정된 출력 광세기가 최고치에 약 1//2에 해당됨을 확인하였으며, 1KHz 전기신호를 인가해서 ${\pi}/2$ 위상차 때문에 나타나는 전기적 현상들을 확인하였다.

Integrated-optic asymmetric Mach-Zehnder interferometer at $1.3{\mu}m$ wavelength and segmented electrode structure were designed and fabricated as a sensing part for the electric-field measurement system. The device was simulated based on the BPM software and fabricated utilizing Ti-diffused $LiNbO_3$ channel optical waveguides and lumped-type electrodes. Almost half-maximum power transmission was observed for asymmetric interferometers with ${\pi}/2$ intrinsic phase difference. Expected experimental measurements were observed for 1KHz electrical signal bandwidth.

키워드

참고문헌

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