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  • Chinese Optics Letters
  • Vol. 20,
  • Issue 1,
  • pp. 011701-
  • (2022)

Dual-beam delay-encoded all fiber Doppler optical coherence tomography for in vivo measurement of retinal blood flow

Mingming Wan, Shanshan Liang, Xinyu Li, Zhengyu Duan, Jiebin Zou, Jun Chen, Jin Yuan, and Jun Zhang

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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.

© 2022 Chinese Laser Press

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