Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Continuous Photonic RF True-time Delay Using a Side-polished Fiber Bragg Grating with Heating Electrode

측면 연마된 광섬유 브래그 격자를 이용한 연속적인 광학적 RF 실시간 지연

  • Chae, Ho-Dong (Department of Electronic Engineering, Kwangwoon University) ;
  • Kim, Do-Hwan (Department of Electronic Engineering, Kwangwoon University) ;
  • Kim, Hyoung-Jun (Department of Electronic Engineering, Kwangwoon University) ;
  • Lee, Sang-Shin (Department of Electronic Engineering, Kwangwoon University) ;
  • Kim, Hyo-Kyeom (Department of Optoelectronics, Honam University) ;
  • Lee, Kyu-Hyo (Department of Optoelectronics, Honam University) ;
  • Kim, Kwang-Taek (Department of Optoelectronics, Honam University)
  • 채호동 (광운대학교 전자공학과) ;
  • 김도환 (광운대학교 전자공학과) ;
  • 김형준 (광운대학교 전자공학과) ;
  • 이상신 (광운대학교 전자공학과) ;
  • 김효겸 (호남대학교 광전자공학과) ;
  • 이규호 (호남대학교 광전자공학과) ;
  • 김광택 (호남대학교 광전자공학과)
  • Published : 2004.12.01
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Abstract

In this paper, a photonic RF true-time delay based on a partially side-polished fiber Bragg grating with heating electrode has been proposed and fabricated. It features continuous voltage-controlled operation, requiring no mechanical perturbation and no moving parts. For an RF signal carried over an optical signal, the time delay has been obtained by controlling the voltage applied to the electrode and thus adjusting its reflection positions from the fiber grating via the thermooptic effect. The achieved time delay is about 100 ps with the electrical power consumption of 280 mW.

본 논문에서는 히팅용 전극이 코팅된 측면 연마된 광섬유 브래그 격자를 이용한 광학적 RF 실시간 지연을 제안하고 제작하였다. 이 소자는 기계적인 움직임이나 진동 없이 전압에 의하여 연속적으로 정밀하게 시간 지연값을 제어할 수 있는 특징을 갖는다. 전극에 인가되는 전압에 의해 유발되는 열광학효과를 통하여 광섬유 격자로부터 반사되는 광신호의 반사 위치를 변화시킴으로써 광신호에 변조용 신호로 실려서 전달되는 RF 신호의 시간 지연을 조절할 수 있다. 측정된 최대 시간 지연은 소비 전력이 280 mW일 때 약100 ps이다.

Keywords

References

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