中国物理B ›› 2011, Vol. 20 ›› Issue (11): 114218-114218.doi: 10.1088/1674-1056/20/11/114218

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Numerical simulation of a gradient-index fibre probe and its properties of light propagation

王驰1, 唐智1, 方臣1, 于瀛洁1, 毛幼馨2, 齐博3   

  1. (1)Department of Precision Mechanical Engineering, Shanghai University, Shanghai 200072, China; (2)Institute for Microstructural Sciences, National Research Council Canada, Ottawa, Canada; (3)Key laboratory of Specialty Fiber Optics and Optical Access Network, Shanghai University , Shanghai 200072, China
  • 收稿日期:2011-04-14 修回日期:2011-05-26 出版日期:2011-11-15 发布日期:2011-11-15
  • 基金资助:
    Project supported by the International Cooperation Project of Shanghai Science and Technology Committee, China (Grant No. 09530708700).

Numerical simulation of a gradient-index fibre probe and its properties of light propagation

Wang Chi(王驰)a)†, Mao You-Xin(毛幼馨) b), Tang Zhi(唐智)a), Fang Chen(方臣)a), Yu Ying-Jie(于瀛洁)a), and Qi Bo(齐博)c)   

  1. a Department of Precision Mechanical Engineering, Shanghai University, Shanghai 200072, China; b Institute for Microstructural Sciences, National Research Council Canada, Ottawa, Canada; c Key laboratory of Specialty Fiber Optics and Optical Access Network, Shanghai University , Shanghai 200072, China
  • Received:2011-04-14 Revised:2011-05-26 Online:2011-11-15 Published:2011-11-15
  • Supported by:
    Project supported by the International Cooperation Project of Shanghai Science and Technology Committee, China (Grant No. 09530708700).

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摘要： In order to verify the properties of the light propagating through a gradient-index (GRIN) fibre probe for optical coherence tomography (OCT), numerical simulation using the optical software GLAD is carried out. Firstly, the model of the GRIN fibre probe is presented, which is consisted of a single mode fibre (SMF), a no-core fibre (NCF), a GRIN fibre lens and an air path. Then, the software GLAD is adopted to numerically investigate how the lengths of the NCF and the GRIN fibre lens influence the performance of the Gaussian beam focusing through the GRIN fibre probe. The simulation results are well consistent with the experimental ones, showing that the GLAD based numerical simulation technique is an intuitive and effective tool for the verification of the properties of the light propagation. In this paper, we find that on the conditions of a constant GRIN fibre lens length of 0.1 mm and an NCF length of 0.36 mm, the working distance of the probe will be 0.75 mm and the focus spot size is 32 μm.

Abstract: In order to verify the properties of the light propagating through a gradient-index (GRIN) fibre probe for optical coherence tomography (OCT), numerical simulation using the optical software GLAD is carried out. Firstly, the model of the GRIN fibre probe is presented, which is consisted of a single mode fibre (SMF), a no-core fibre (NCF), a GRIN fibre lens and an air path. Then, the software GLAD is adopted to numerically investigate how the lengths of the NCF and the GRIN fibre lens influence the performance of the Gaussian beam focusing through the GRIN fibre probe. The simulation results are well consistent with the experimental ones, showing that the GLAD based numerical simulation technique is an intuitive and effective tool for the verification of the properties of the light propagation. In this paper, we find that on the conditions of a constant GRIN fibre lens length of 0.1 mm and an NCF length of 0.36 mm, the working distance of the probe will be 0.75 mm and the focus spot size is 32 μm.

Key words: optical coherence tomography, gradient-index fibre probe, gradient-index lens, GLAD

中图分类号:  (Gradient-index (GRIN) devices)

  • 42.79.Ry
42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation) 42.55.Wd (Fiber lasers) 02.60.Cb (Numerical simulation; solution of equations)