Journal of the Institute of Electronics Engineers of Korea SD (대한전자공학회논문지SD)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Design and analysis of a mode size converter composed of periodically segmented taper waveguide surrounded by trenches

좌우 트렌치를 구비한 분리 주기 테이퍼 도파로 모드 크기 변환기의 설계 및 성능 분석

  • Park Bo Gen (Department of Electronic and Communication Engineering, Kwangwoon University) ;
  • Chung Young Chul (Department of Electronic and Communication Engineering, Kwangwoon University)
  • 박보근 (광운대학교 전자통신공학과) ;
  • 정영철 (광운대학교 전자통신공학과)
  • Published : 2004.12.01
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Abstract

In this paper, we have designed a mode size converter to reduce coupling loss between super-high delta silica optical waveguides and single mode fibers. The new mode size converter has three design aspects; periodically segmented taper waveguide for minimal size, lateral taper waveguide for simple fabrication, and surrounding trenches to improve coupling loss. In the optimal mode size converter design, coupling loss is 0.33dB/point without trenches and 0.2dB/point with trenches.

본 논문에서는 슈퍼하이델타(Super High Delta) 실리카 광도파로와 단일 모드 광섬유 사이의 결합손실을 줄이기 위한 모드 크기 변환기를 설계하였다. 새로운 모드 크기 변환기는 물리적 크기를 최소화하기 위해 주기적으로 분리된 테이퍼 도파로를 사용하였으며 공정을 간단히 하기 위해 수평형 테이퍼를 사용하였다. 또한 결합손실을 개선하기 위해 모드 크기 변환기 주변에 트렌치 구조를 삽입하였다. 최적의 모드 크기 변환기 설계에서 결합손실은 트렌치 구조가 삽입되지 않은 경우는 0.33dB/point 이며 트렌치가 삽입된 경우는 0.2dB/point이다.

Keywords

References

  1. N. Kalonji and I. Semo, 'High efficiency, long working distance laser diode to single mode fiber coupling,' Electron. Lett., Vol. 30, No 11, pp. 892-894, 1994 https://doi.org/10.1049/el:19940567
  2. H. M. Presby and C. A. Edwards, 'Near 100% efficient fiber microlenses,' Electron. Lett., Vol. 28, No 6, pp. 582-584, 1992 https://doi.org/10.1049/el:19920367
  3. Ingrid Moerman, Peter P. Van Daele and Piet M. Demester 'A Review on fabrication technologies for the monolithic integration of tapers with Ill-V semiconductor,' IEEE J. Quantum. Elec-tron., Vol. 3, No.6, p.1308, 1997 https://doi.org/10.1109/2944.658785
  4. M. Ithoh, T. Saida, Y. hida, M. Ishii, Y. Inoue, Y. Hibino and A. Sugita 'Large reduction of single mode-fibre coupling loss in 1.5% ${\Delta}$ planar lightwave circuits using spot-size convert-ters,' Electron. Lett., Vol. 38, No.2, pp. 72-74, 2002 https://doi.org/10.1049/el:20020059
  5. Z. Weissman and I. hendel. 'Analysis of periodically segmented waveguide mode expander,' J. Lightwave Technol., Vol. 13, No. 10, pp. 2053-2058, 1995 https://doi.org/10.1109/50.469728
  6. Z. Weissman and A. hardly. 'modes of periodically segmented waveguides,' J. lightwve Technol., Vol.11, No. 11, pp. 1831-1838, 1993 https://doi.org/10.1109/50.251181
  7. M. Kawchi, 'Silica waveguides on silicon and their application to integrated-optics component,' Opt. Quantum Elecron., Vol. 22 pp.391-416, 1990 https://doi.org/10.1007/BF02113964
  8. C. H. henry, G. E. Blonder, and R. F. Kazarinov, 'Glass waveguides on silicon for hyrid optical packaging,' J. Lightwave Technol., Vol. 7, pp.1530-1539, 1989 https://doi.org/10.1109/50.39094
  9. Y. Chung and N. Dagli, 'Analysis of Z-invariant and Z -variant semiconductor rib waveguides by explicit finite difference beam propagation method with nonuniform mesh configuration,' J. Quantum Electron., Vol. 27, pp. 2296-2305, 1991 https://doi.org/10.1109/3.97273