Korean Journal of Optics and Photonics (한국광학회지)

Optical Society of Korea (한국광학회)
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Propagation Characteristics and Tolerance Analysis of Optical Wires in Flexible Optical PCB by Ray Tracing

연성 광 PCB용 광 배선의 손실특성 및 제작 공차 분석

  • Yeom, Jun-Cheol (School of Information Engineering, Optics and Photonics Elite Research Academy (OPERA), Inha University) ;
  • Park, Dae-Seo (School of Information Engineering, Optics and Photonics Elite Research Academy (OPERA), Inha University) ;
  • Kim, Young-Seok (School of Information Engineering, Optics and Photonics Elite Research Academy (OPERA), Inha University) ;
  • Kim, Dae-Chan (School of Information Engineering, Optics and Photonics Elite Research Academy (OPERA), Inha University) ;
  • Park, Se-Geun (School of Information Engineering, Optics and Photonics Elite Research Academy (OPERA), Inha University) ;
  • O, Beom-Hoan (School of Information Engineering, Optics and Photonics Elite Research Academy (OPERA), Inha University) ;
  • Lee, El-Hang (School of Information Engineering, Optics and Photonics Elite Research Academy (OPERA), Inha University) ;
  • Lee, Seung-Gol (School of Information Engineering, Optics and Photonics Elite Research Academy (OPERA), Inha University) ;
  • Jeon, Keum-Soo (Doosan Technical Center, Doosan Electro-Materials)
  • 염준철 (인하대학교 공과대학 정보공학과, 집적형 광자기술 연구센터(OPERA)) ;
  • 박대서 (인하대학교 공과대학 정보공학과, 집적형 광자기술 연구센터(OPERA)) ;
  • 김영석 (인하대학교 공과대학 정보공학과, 집적형 광자기술 연구센터(OPERA)) ;
  • 김대찬 (인하대학교 공과대학 정보공학과, 집적형 광자기술 연구센터(OPERA)) ;
  • 박세근 (인하대학교 공과대학 정보공학과, 집적형 광자기술 연구센터(OPERA)) ;
  • 오범환 (인하대학교 공과대학 정보공학과, 집적형 광자기술 연구센터(OPERA)) ;
  • 이일항 (인하대학교 공과대학 정보공학과, 집적형 광자기술 연구센터(OPERA)) ;
  • 이승걸 (인하대학교 공과대학 정보공학과, 집적형 광자기술 연구센터(OPERA)) ;
  • 전금수 (두산전자 두산기술원)
  • Published : 2008.08.25
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Abstract

In this study, the propagation characteristics and the fabrication tolerance of an optical wire in a flexible optical PCB were analyzed by using a ray-tracing method. It is found from the analysis that the sidewall angle of a core should be controlled within $1^{\circ}$ in order to maintain the propagation loss to less than -1 dB/mm, and that the bending radius of the optical wire should be larger than 5 mm in order to suppress the bending loss below -1 dB. In addition, it is confirmed that the lateral misalignment of ${\pm}15\;{\mu}m$, and the angular tilting of VCSEL of $6^{\circ}$ are allowable for the coupling loss of -1 dB.

광 백 플레인이나 광 연결용으로 활용될 수 있는 연성 광 PCB의 핵심 요소인 광 배선(도파로)의 전파 특성을 분석하였으며, 광배선 제작 공정에서 발생할 수 있는 구조적 오차로 인한 전파 손실 발생 문제를 다루었다.제작 공차 분석을 통해 전파 손실을 -1 dB/mm 이하로 유지하기 위해서는 광 배선 측벽 각도가 $1^{\circ}$ 이내로 제어되어야 하며, 결합 손실과 구부러짐 손실을 각각 -1 dB 이하로 유지하기 위해서는 광원과 광 배선 간격은 $160\;{\mu}m$ 이내, 횡방향 정렬 오차는 ${\pm}15\;{\mu}m$ 이내, 광원 각도는 $6^{\circ}$ 이하로 정렬되어야 하며, 광 배선의 구부러짐 반경은 5 mm 이상이 되어야 함을 알 수 있었다.

Keywords

References

  1. J. W. Goodman, F. I. Leonberger, S. -Y. Kung, and R. A. Ahale, “Optical Interconnections for VLSl Systems,” Proceedings of IEEE, vol. 72, no. 7, pp. 850-866, 1984 https://doi.org/10.1109/PROC.1984.12943
  2. E. Griese, “A high-performance hybrid electrical-optical interconnection technology for high-speed electronic systems,” IEEE Transactions on advanced packaging, vol. 24, no. 3, pp. 375-383, 2001 https://doi.org/10.1109/6040.938306
  3. E. -H. Lee, S. G. Lee, B. H. O, and S. G. Park, “Optical Printed Circuit Board (O-PCB): A New Platform toward VLSI Micro/Nano-Photonics?,” IEEE 2004 Digest of LEOS Summer Topical Meetings, pp. 21-22, 2004
  4. H. Takahara, “Optoelectronic multichip module packaging technologies and optical input/output interface chip-level packages for the next generation of hardware systems,” IEEE Journal of selected topics in quantum electronics, vol. 9, no. 2, pp. 443-451, 2003 https://doi.org/10.1109/JSTQE.2003.814942
  5. M. Stach, “10 Gbit/s Data Transmission Experiments over Optical Backplane Waveguides with 850 nm Wavelength Multimode VCSELs,” Annual Report, Optoelectronics Department, University of Ulm, 2002
  6. M. A. Shahid and W. R. Holland, “Flexible optical backplane interconnections,” Proceedings of MPPOI'96, pp. 178-185, 1996
  7. L. -C. Shen, W. -C. Lo, H. -H. Chang, H. -C. Fu, Y. -C. Lee, Y. -C. Chen, S. -M. Chang, W. -Y. Chen, and M. -C. Chou, “Characterization of organic multi-mode optical waveguides for electro-optical printed circuit boards (EOPCB),” Circuit World, vol. 32, no. 1, pp. 8-15, 2006 https://doi.org/10.1108/03056120610616508
  8. E. -H. Lee, “Hard and flexible optical printed circuit board (OPCB) using micro/nano-imprinting of polymer optical waveguides,” SPIE Photonic West 2008, vol. 6897, 2008
  9. 염준철,박헌용,이승걸,오범환,박세근,이일항,전금수, 이민수, “연성 광 PCB 구현을 위한 다중모드 optical wire의 전파특성 분석”, Photonics Conference 2006, pp. 436-437, 2006
  10. H. -S. Lee, S. -M. An, S. G. Lee, B. -H. O, and E. -H. Lee, “Fabrication of a 10 Gbps/ch flexible optical printed circuit board (FO-PCB),” SPIE Photonics West 2007, vol. 6476, 2007
  11. LightToolsTM, Optical Research Associates, 2001
  12. Jing Yuan, Fengguang Luo, Xinjun Zhou, Qirui Huang, Mingcui Cao, “Optical interconnection in embedded-fiber printer circuit boards,” Optik - International Journal for Light and Electron Optics, In Press, Corrected Proof, Available online, 2006
  13. T. Bierhoff, Amir Wallrabenstein, Andreas Himmler, Elmar Griese, and Gred Mrozynski, “Ray tracing technique and its verification for the analysis of highly multimode waveguides with rough surfaces,” IEEE trans. magn., vol. 37, pp. 3307-3310, 2001 https://doi.org/10.1109/20.952601