Yan Chen, Zhongliang Li, Nan Nan, Yang Bu, Xuan Wang, Liuhua Pan, Xiangzhao Wang. Speckle Noise Reduction in Fourier Domain Polarization-Sensitive Coherence Tomography by Split-Spectrum[J]. Acta Optica Sinica, 2018, 38(8): 0811004
- Acta Optica Sinica
- Vol. 38, Issue 8, 0811004 (2018)
Fig. 1. Diagram of split-spectrum method for speckle noise reduction
Fig. 2. Power spectrum of light source
Fig. 3. Simulation results of intensity images. (a) Before split-spectrum; (b) method 1; (c) method 2
Fig. 4. Simulation results of the polarization images. Retardation images, (a) before split-spectrum, (c) method 1, (e) method 2; fast axis orientation images, (b) before split-spectrum, (d) method 1, (f) method 2
Fig. 5. Comparison of A-line signals before and after using the split-spectrum method. (a) Whole result; (b) enlarged view of dashed box in Fig.(a)
Fig. 6. Schematic of FD-PS-OCT system
Fig. 7. PS-OCT images of chicken breast muscle. (a)(b) Intensity images before and after using the split-spectrum method; (c)(d) retardation images before and after using the split-spectrum method; (e)(f) fast axis orientation images before and after using the split-spectrum method
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Table 1. Comparison of speckle reduction of 2 methods in intensity images
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Table 2. Comparison of speckle reduction of two methods in retardation images
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Table 3. Comparison of speckle reduction of two methods in fast axis orientation images
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Table 4. Comparison of speckle reduction in PS-OCT images before and after split-spectrum method
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Table 5. SNR, CNR and ENL for PS-OCT images before and after using split-spectrum method
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