Efficient Dispersion Compensation Method Based on Spatial Pulse Width

Yushuai Xu; Huaiyu Cai; Lutong Wang; Yi Wang; Xiaodong Chen

doi:10.3788/AOS231227

Acta Optica Sinica, Volume. 43, Issue 23, 2310001(2023)

Efficient Dispersion Compensation Method Based on Spatial Pulse Width

Yushuai Xu, Huaiyu Cai^*, Lutong Wang, Yi Wang, and Xiaodong Chen

Key Laboratory of Opto-Electronics Information Technology of Ministry of Education,School of Precision Instrument and Opto-Electronics Engineering, Tianjin University,Tianjin 300072, China

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Figures & Tables(7)

Fig. 1. The flow diagram of the proposed algorithm

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Fig. 2. Optical path diagram of OCT system

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Fig. 3. Dispersion compensation results for the system point spread function. (a)-(d) Correspond to actual dispersion of 680 fs²,1947 fs²,3368 fs², and 5180 fs²,respectively

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Fig. 4. Dispersion compensation results of OCT images of grape pulp. (a) Uncompensated images; (b) the compensation results of the proposed algorithm

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Fig. 5. Dispersion compensation results of human retinal OCT images.(a) Uncompensated images; (b) the compensation results of the proposed algorithm

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Table 1. Comparison of estimates of dispersion and truth of dispersion
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Table 1. Comparison of estimates of dispersion and truth of dispersion
Sequence Truth of dispersion /fs² Estimates of dispersion /fs² Relative error /%
1 680 702 3.2
2 1947 2065 6.1
3 3368 3486 3.5
4 5180 5200 0.4

Table 2. Comparison of dispersion compensation effects of different algorithms
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Table 2. Comparison of dispersion compensation effects of different algorithms
Algorithm Iterations ΔSNR /dB EI Time /ms
Iteration algorithm 5 1.92 0.57 <1
50 5.01 0.28 >5
FrFT algorithm 5 0 1 <10
40 4.91 0.28 >50
Proposed algorithm 5.11 0.28 <1

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Yushuai Xu, Huaiyu Cai, Lutong Wang, Yi Wang, Xiaodong Chen. Efficient Dispersion Compensation Method Based on Spatial Pulse Width[J]. Acta Optica Sinica, 2023, 43(23): 2310001

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