TY - JOUR
T1 - Conjugate Transformation for Dispersion Compensation in Optical Coherence Tomography Imaging
AU - Zhang, Wenxin
AU - Zhang, Xiao
AU - Wang, Chengming
AU - Liao, Wenchao
AU - Ai, Shengnan
AU - Peng, Zhangkai
AU - Hsieh, Juicheng
AU - Zhang, Ning
AU - Tang, Bihua
AU - Xue, Ping
N1 - Publisher Copyright:
© 1995-2012 IEEE.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - In optical coherence tomography (OCT), the sample dispersion tends to increase the signal width and hence lower down the resolution, resulting in serious image quality degradation, especially for imaging over a large depth range or media with large dispersion coefficient. In this letter, instead of the conventional Fourier transformation for dispersion compensation that can compensate the image only ideally at a certain depth, a novel transformation, as called conjugate transformation, is proposed to achieve high resolution at all depth by utilizing the conjugate function of the signal itself as an optimized integral kernel. A large dispersion media of ZnSe is used as the sample to test the feasibility of this novel transformation, achieving ∼1.4 times higher resolution than the conventional transformation. OCT imaging of bio-tissues with ideally compensation of sample dispersion for all the depth is experimentally demonstrated and at the same time the dispersion coefficients are also obtained.
AB - In optical coherence tomography (OCT), the sample dispersion tends to increase the signal width and hence lower down the resolution, resulting in serious image quality degradation, especially for imaging over a large depth range or media with large dispersion coefficient. In this letter, instead of the conventional Fourier transformation for dispersion compensation that can compensate the image only ideally at a certain depth, a novel transformation, as called conjugate transformation, is proposed to achieve high resolution at all depth by utilizing the conjugate function of the signal itself as an optimized integral kernel. A large dispersion media of ZnSe is used as the sample to test the feasibility of this novel transformation, achieving ∼1.4 times higher resolution than the conventional transformation. OCT imaging of bio-tissues with ideally compensation of sample dispersion for all the depth is experimentally demonstrated and at the same time the dispersion coefficients are also obtained.
KW - Dispersion
KW - image enhancement
KW - optical coherence tomography
UR - http://www.scopus.com/inward/record.url?scp=85040936238&partnerID=8YFLogxK
U2 - 10.1109/JSTQE.2018.2796142
DO - 10.1109/JSTQE.2018.2796142
M3 - Article
AN - SCOPUS:85040936238
SN - 1077-260X
VL - 25
JO - IEEE Journal of Selected Topics in Quantum Electronics
JF - IEEE Journal of Selected Topics in Quantum Electronics
IS - 1
M1 - 7100107
ER -