한국전자통신학회논문지 (The Journal of the Korea institute of electronic communication sciences)

한국전자통신학회 (Korea Institute of Electronic Communication Science)
권호 표지
DOI QR코드

DOI QR Code

오목한 광섬유 팁의 방사특성에 관한 연구

A Study on the Radiation Characteristics of Concave Optical Fiber Tips

  • 손경호 (한국과학기술원 전기및전자공학부) ;
  • 유경식 (한국과학기술원 전기및전자공학부)
  • 투고 : 2017.06.30
  • 심사 : 2017.10.18
  • 발행 : 2017.10.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

본 논문에서는 광통신용 공진기에 필요한 광섬유의 오목한 면 제작에 관한 연구를 진행하였다. 불산(Hydrofluoric acid) 용액과 이 용액에 잘 흡수될 수 있는 파장인 $1.55{\mu}m$의 레이저를 인가하여 광열효과를 유도하였고, 식각 용액에서의 광열효과를 통해 광섬유 끝단의 곡률 반경을 자유롭게 변경할 수 있는 점을 현미경 사진 촬영으로 확인하였다. 빔 프로파일러를 이용하여 제작한 결과물의 끝단에서 방사되는 빔의 크기 변화를 관측하여 유효성을 검증하였고 본 논문의 저자들은 제시한 방식이 광통신용 공진기에 적용 가능성이 있을 것으로 보고 있다.

In this paper, we report the fabrication of concave surface fiber tips for optical resonators. It was confirmed that the radius of curvature on fiber end can be controlled by introducing the hydrofluoric acid solution and the wavelength of $1.55{\mu}m$ laser which is absorbed well in the etchant to induce the photothermal effect. Using the microscope images, we observed the proposed concave fiber tip fabrication method is effective to make the controllable concave tips. We also observed changes in the size of the beam emitted from the tips with the various radius of curvature using the beam profiler. The authors believe that the proposed method will be applied to resonators for optical communications.

키워드

참고문헌

  1. T. Kim, Y. Rhee, and S. Kim, "Implementation of a Microwave Doppler Sensor," J. of the Korea Institute of Electronic Communication Sciences, vol. 4, no. 2, 2009, pp. 77-81.
  2. J. Xie, W.-H. Fan, and X. Chen, "Systematic experimental study on a highly efficient terahertz source based on two-color laser-induced air plasma," Laser Physics, vol. 26, no. 5, 2016, p. 055002-055008. https://doi.org/10.1088/1054-660X/26/5/055002
  3. K. Peng, P. Parkinson, Q. Gao, J. Boland, Z. Li, F. Wang, S. Mokkapati, L. Fu, M. Johnston, and H. Tan, "Single n+-i-n+ InP nanowires for highly sensitive terahertz detection," Nanotechnology, vol. 28, no. 12, 2017, p. 125202-125211. https://doi.org/10.1088/1361-6528/aa5d80
  4. T. Yun, "Harmonic-Suppressed Hairpin Bandpass Filter for the Microwave Radiomete," J. of the Korea Institute of Electronic Communication Sciences, vol. 9, no. 10, 2014, pp. 1169-1174. https://doi.org/10.13067/JKIECS.2014.9.10.1169
  5. K. Grattan and T. Sun, "Fiber optic sensor technology: an overview," Sensors and Actuators A: Physical, vol. 82, no. 1, 2000, pp. 40-61. https://doi.org/10.1016/S0924-4247(99)00368-4
  6. K. Vahala, "Optical microcavities," Nature, vol. 424, no. 6950, 2003, pp. 839-846. https://doi.org/10.1038/nature01939
  7. H. Kogelnik and T. Li, "Laser beams and resonators," Applied Optics, vol. 5, no. 10, 1966, pp. 1550-1567. https://doi.org/10.1364/AO.5.001550
  8. D. Hunger, T. Steinmetz, Y. Colombe, C. Deutsch, T. Hänsch, and J. Reichel, "A fiber Fabry-Perot cavity with high finesse," New J. of Physics, vol. 12, no. 6, 2010, pp. 065038-065060. https://doi.org/10.1088/1367-2630/12/6/065038
  9. D. Hunger, C. Deutsch, R. J. Barbour, R. J. Warburton, and J. Reichel, "Laser micro-fabrication of concave, low-roughness features in silica," American Institute of Physics Advances, vol. 2, no. 1, 2012, pp. 012119-012124.
  10. V. Machavaram, R. Badcock, and G. Fernando, "Fabrication of intrinsic fibre Fabry -Perot sensors in silica fibres using hydrofluoric acid etching," Sensors and Actuators A: Physical, vol. 138, no. 1, 2007, pp. 248-260. https://doi.org/10.1016/j.sna.2007.04.007
  11. W. Chen, D. Wang, B. Xu, C. Zhao, and H. Chen, "Multimode fiber tip Fabry-Perot cavity for highly sensitive pressure measurement," Scientific Reports, vol. 7, 2017, pp. 1-6. https://doi.org/10.1038/s41598-016-0028-x
  12. Y. Liu, D. Wang, and W. Chen, "Crescent shaped Fabry-Perot fiber cavity for ultra-sensitive strain measurement," Scientific Reports, vol. 6, 2016, pp. 1-9. https://doi.org/10.1038/s41598-016-0001-8
  13. S. Wu, G. Yan, B. Zhou, E. Lee, and S. He, "Open-cavity Fabry-Perot interferometer based on etched side-hole fiber for microfluidic sensing," IEEE Photonics Technology Letters, vol. 27, no. 17, 2015, pp. 1813-1816. https://doi.org/10.1109/LPT.2015.2443375
  14. Hyung-Jun Heo and Sang-In Kim, "Analysis of Coupled Mode Theory for Design of Coupler Between Optical Fiber And Grating Assisted Waveguide," J. of the Korea Institute of Electronic Communication Sciences, vol. 12, no. 4, 2017, pp. 561-568. https://doi.org/10.13067/JKIECS.2017.12.4.561