Opt Express. 2022 Jan 17;30(2):2578-2584. doi: 10.1364/OE.446941.
This paper describes a balanced detection spectral-domain optical coherence tomography (BD-SD-OCT) system for suppressing autocorrelation (AC) artifacts and increasing the signal-to-noise ratio (SNR). The system employed three optical fiber couplers to generate two phase-opposed interference spectra that were acquired by a single line-scan camera simultaneously. When compared with conventional unbalanced detection SD-OCT systems, the developed BD-SD-OCT system improved the SNR by 5.4-6 dB and suppressed the AC term by 5-10 dB. The imaging quality of the BD-SD-OCT system was evaluated by in vivo imaging of human nail folds and retinas.
本文描述了一种用于抑制自相关（AC）伪影和提高信噪比（SNR）的平衡探测光谱域光相干断层扫描（BD-SD-OCT）系统。该系统采用三个光纤耦合器产生两个相位相反的干涉谱，由单个线扫描相机同时获取。与传统的非平衡探测 SD-OCT 系统相比，所开发的 BD-SD-OCT 系统提高了 SNR 5.4-6dB，并抑制了 AC 项 5-10dB。通过对人指甲褶皱和视网膜的体内成像，评估了 BD-SD-OCT 系统的成像质量。
