Acta Optica Sinica, Volume. 9, Issue 2, 181(1989)
Refracted near-field technique for the measurement of optical fiber refractive index profiles
The basic principle and experimental method of refracted near-field technique for the measurem nt of optical fiber refractive index profiles are described. The measured results for multimode and mono-mode fiber profiles are provided and compared with that by reflection technique and near-field technique. The spatial resolution better than 0.8μm, and refractive index sensitivity better than 2×10-4 are obtained in the experiment.
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YIN AIE, JIANG ZHONGXUAN, ZHANG YILONG. Refracted near-field technique for the measurement of optical fiber refractive index profiles[J]. Acta Optica Sinica, 1989, 9(2): 181