Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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A Study on Fabrication and Performance Evaluation of Ti:LiNbO3 Polarization Mode Controllers

Ti:LiNbO3 편광모드 조절기 제작 및 성능 평가에 관한 연구

  • Moon, Je-Young (Dept. of Electronic & Computer Engineering, Graduate School, Hong-Ik University) ;
  • Jung, Hong-Sik (Dept. of Electronic & Computer Engineering, Graduate School, Hong-Ik University)
  • 문제영 (홍익대학교 대학원 전자전산공학과) ;
  • 정홍식 (홍익대학교 대학원 전자전산공학과)
  • Published : 2004.12.01
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Abstract

We investigated a LiNbO$_3$ based integrated-optic polarization controller with the Ti-indiffused waveguide along the z-axis utilizing the electro-optic effect. The device consists of a first quarter-wave (λ / 4) followed by a half-wave (λ / 2) and a second quarter-wave (λ / 4) wave-plate. We analyzed the amount of phase change and the transformation of the polarized mode as a function of the combination of wave-plates and of their applied voltages. The operation has been systematically measured utilizing a polarimeter and Poincare sphere. We confirmed that the fabricated device controls the transformations from any arbitrary input state of polarization (SOP) into any general output SOP.

z-축 방향으로 진행하는 Ti:LiNbO$_3$, 광도파로와 전기광학효과를 이용하여 집적광학형 편광조절기를 구현하였다. 소자는 λ/4-λ/2-λ/4 wave-plate들로 구성되었으며, 각 wave-plate에 인가되는 전압들에 따라 나타나는 위상변화량과 이에 대응되는 편광모드 변환을 정량적으로 검토하고, 폴래리미터 (polarimeter)와 Poincare 구 좌표계를 이용하여 편광 조절기의 동작 상태를 체계적으로 측정하였다. 제작된 편광조절기는 각 wave-plate들의 선택과 인가전압에 따라 어떠한 입력 편광 상태도 특정한 출력 편광상태로 변화시킬 수 있음을 확인하였다.

Keywords

References

  1. T. Ono and Y. Yano, '10Gb/s PMD compensation field experiment over 425km using principal state transmission method,' Optics Photonics News, pp. 61, 2000
  2. L. Moller, 'WDM Polarization Controller in PLC Technology,' IEEE Photonics Technol. Lett., Vol. 13, 2001
  3. R. Noe, et al, 'Integrated optical $LiNbO_{3}$ distributed polarization mode dispersion compensator in 20Gbitls transmission system,' Electron. Lett., Vol. 35, pp. 652-653, 1999 https://doi.org/10.1049/el:19990434
  4. Michel Chbat, 'Managing polarization mode dispersion,' Photonics Spectra, pp. 100-104, 2000
  5. P. M. Hill, R. Olshansky, and W. K. Burns, 'Optical Polarization Division Multiplexing at 4 Gb/s,' IEEE Photonics Technol. Lett., Vol. 4, pp. 500-502 1992 https://doi.org/10.1109/68.136500
  6. H. Shimizu, S. Yamazaki, T. Ono, and K. Emura, 'Highly Practical Fiber Squeezer Polarization Controller,' J. Lightwave Technol., Vol. 9, pp. 1217-1224, 1991 https://doi.org/10.1109/50.90918
  7. S. H. Rumbaugh, M. D Jones, and L. W. Casperson, 'Polarization Control Using Nematic Liquid Crystals,' J. Lightwave Technol., Vol. 8, pp. 459-465, 1990 https://doi.org/10.1109/50.50741
  8. G. R. Walker and N. G. Walker, 'Polarization control for Coherent communications,' J. Lightwave Technol., Vol. 8, pp. 438-458, 1990 https://doi.org/10.1109/50.50740
  9. R. Noe, H. Heidrich, and D. Hoffmann, 'Endless Polarization Control Systems for Coherent Optics,' J. Lightwave Technol., Vol. 6, pp. 1199-1208, 1988 https://doi.org/10.1109/50.4117
  10. Fred Heismann 'Analysis of a reset-free polarization controller for fast automatic polarization stabilization in fiber-optic transmission systems,' J. Lightwave Technol, vol. 12, pp. 690-699, 1994 https://doi.org/10.1109/50.285366
  11. Fred Heismann and M. S. Whalen, 'Broadband reset-free automatic polarization controller,' Electron. Lett., Vol. 27, pp. 377-379, 1991 https://doi.org/10.1049/el:19910237
  12. A. Yariv, Quantum Electronics. New York: Wiley, pp. 296-309, 1967
  13. Fred Heismann, 'Integrated-optic polarization transformer for reset-free endless polarization control,' IEEE J. Quantum Electron., vol. 25, pp. 1898-1906, 1989 https://doi.org/10.1109/3.34051
  14. T. Kawazoe, K. Satoh, J.Hayashi, and H. Mori, 'Fabrication ofIntegrated-Optic Polarization Controller Using Z-Propagating Ti-$LiNbO_{3}$ Waveguides,' J. Lightwave Technol., Vol. 10, pp. 51-56, 1992 https://doi.org/10.1109/50.108736