Design of a Rod-Type Aspheric Lens Collimator for Optical Telecommunication

막대 형태의 비구면 렌즈를 이용한 광통신용 시준기의 설계

  • 강석봉 (인하대학교 자연과학대학 물리학과) ;
  • 강은경 (인하대학교 자연과학대학 물리학과) ;
  • 황보창권 (인하대학교 자연과학대학 물리학과) ;
  • 강상도 (AG광학 광기술연구소) ;
  • 김종섭 (한국광기술원 시험생산센터)
  • Published : 2008.02.29


A rod-type aspheric lens collimator for the optical telecommunication system which shows high coupling efficiency and experiences small coupling loss for misalignment errors is designed. The working distance, thickness, and diameter of the rod-type aspheric lens are determined to be close to those of the GRIN lens collimator in order to replace the GRIN lens with the rod-type aspheric lens. Since the coupling loss mainly originated from the spherical aberration of the lens, the spherical aberration in the rod-type aspheric lens is reduced drastically, and it turns out that the coupling efficiency of the rod-type aspheric lens collimator is higher than that of the available collimators, such as ball lens, GRIN lens, and C-type lens collimators.


  1. R. E. Wagner and W. J. Tomlinson, 'Coupling efficiency of optics in single-mode fiber components,' Appl. Opt., vol. 21, no. 15, pp. 2671-2688, 1982
  2. M. Ramos, I. Verrier, J. P. Goure, and P. Mottier, 'Efficient ball lens coupling between a single-mode optical fiber and a silica microguide at 1.3 um,' J. Opt. Commun, vol. 16, no. 5, pp. 179-185, 1995
  3. Shifu Yuan and Nabeel A. Riza, 'General foormula for coupling-loss characterization of single-mode fiber collimators by use of gradient-index rod lenses,' Appl. Opt., vol. 38, no. 15, pp. 3214-3222, 1999
  4. M. Cot. and R. Shannon, 'Optimization of waveguide coupling lenses with optical design software,' Appl. Opt., vol. 35, no. 31, pp. 6179-6185, 1996
  5. R. P. Ratowsky, L. Yang, R. J. Deri, K. W. Chang, J. S. Kallman, and G. Trott, 'Laser diode to single-mode fiber ball lens coupling efficiency: full-wave calculation and measurements,' Appl. Opt., vol. 36, no. 15, pp. 3435-3438, 1997
  6. Optical Research Associates, CODE-V reference manual, Ver. 9.5, (Optical Research Associates, California, USA, 2005), pp. 19.161-19.188