Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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A Very Short Vertical Directional Coupler Switch with Polarization Independent Very High Extinction Ratios

편광에 관계없이 매우 높은 소멸비와 짧은 길이를 가지는 수직 방향성 결합기 스위치

  • Jung Byung-Min (School of Electronic Engineering, Soongsil University) ;
  • Kim Boo-Gyoun (School of Electronic Engineering, Soongsil University)
  • 정병민 (숭실대학교 정보통신전자공학부) ;
  • 김부균 (숭실대학교 정보통신전자공학부)
  • Published : 2004.12.01
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Abstract

We propose a novel vertical directional coupler switch using a vertical directional coupler with polarization independent coupling lengths employing the doublesided deep-ridge waveguide structure. This switch is composed of a switching operation induced section with symmetric structures and an extinction ratio enhanced section with asymmetric structures. We present design methods and examples for this switch with very short lengths and very high extinction ratios larger than 30 dB for both TE and TM modes in cases of both cross and bar states.

편광에 무관한 결합길이를 가지는 double-sided deep-ridge (DSDR) 도파관 구조의 수직 방향성 결합기를 이용하여 대칭형 구조를 가지는 스위칭 동작 유도 영역과 비대칭형 구조를 가지는 소멸비 향상 영역으로 구성된 수직 방향성 결합기 스위치를 제안하였다. 이러한 구조를 이용하여 짧은 길이를 가지며 편광에 관계없이 크로스 상태와 바 상태에서 모두 30 dB 이상의 소멸비를 가지는 스위치를 설계하는 방법과 설계 예를 제시하였다.

Keywords

References

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