• Chinese Optics Letters
  • Vol. 20, Issue 1, 011701 (2022)
Mingming Wan1, Shanshan Liang2,**, Xinyu Li3, Zhengyu Duan4..., Jiebin Zou1, Jun Chen1,5, Jin Yuan6 and Jun Zhang7,*|Show fewer author(s)
Author Affiliations
  • 1School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510006, China
  • 2National Innovation Center for Advanced Medical Devices, Shenzhen 518131, China
  • 3GBA Branch of Aerospace Information Research Institute, Chinese Academy of Sciences, Guangzhou 510530, China
  • 4School of Biomedical Engineering, Sun Yat-sen University, Guangzhou 510006, China
  • 5State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China
  • 6State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
  • 7School of Artificial Intelligence, Guilin University of Electronic Technology, Guilin 541004, China
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    DOI: 10.3788/COL202220.011701 Cite this Article Set citation alerts
    Mingming Wan, Shanshan Liang, Xinyu Li, Zhengyu Duan, Jiebin Zou, Jun Chen, Jin Yuan, Jun Zhang, "Dual-beam delay-encoded all fiber Doppler optical coherence tomography for in vivo measurement of retinal blood flow," Chin. Opt. Lett. 20, 011701 (2022) Copy Citation Text show less

    Abstract

    In this paper, we propose and demonstrate a dual-beam delay-encoded Doppler spectral domain optical coherence tomography (OCT) system for in vivo measurement of absolute retinal blood velocity and flow with arbitrary orientation. The incident beam is split by a beam displacer into two probe beams of the single-spectrometer spectral domain OCT system with orthogonal polarization states and an optical path length delay. We validate our approach with a phantom and in vivo experiments of human retinal blood flow, respectively.
    V=(ϕ2ϕ1)λ04πnτ·cosβ·Δα,

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    F=SVdSdt=SXZV·dSxz·cosβdt=SXZ(ϕ2ϕ1)λ04πnτ·Δαdxdzdt,

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    Mingming Wan, Shanshan Liang, Xinyu Li, Zhengyu Duan, Jiebin Zou, Jun Chen, Jin Yuan, Jun Zhang, "Dual-beam delay-encoded all fiber Doppler optical coherence tomography for in vivo measurement of retinal blood flow," Chin. Opt. Lett. 20, 011701 (2022)
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