Master-slave interferometry for parallel spectral domain interferometry sensing and versatile 3D optical coherence tomography
Master-slave interferometry for parallel spectral domain interferometry sensing and versatile 3D optical coherence tomography
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DOI：
10.1364/oe.21.019324
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发表时间：
2013-08-12
期刊：
影响因子：
3.8
通讯作者：
Bradu, Adrian
中科院分区：
文献类型：
--
作者：
Podoleanu, Adrian Gh.;Bradu, Adrian
传统的谱域干涉测量 (SDI) 方法需要数据线性化。当应用于光学相干断层扫描 (OCT) 时，传统 SDI 方法的 3D 能力受到限制，因为它们无法提供直接正面切割。在这里我们介绍一种新颖的 SDI 方法，它消除了这些缺点。我们将此方法称为主从干涉仪 (MSI)，因为从属干涉仪获取信号，以获得由主干涉仪确定的光程差 (OPD) 值。 MSI 方法从根本上改变了 SDI 传感器和谱域 OCT 设置的主要构建模块。传统技术中串行提供的信号被多个信号所取代，一个信号对应于所研究对象中的每个OPD点。这为 3D-OCT 中的并行传感和信号处理并行化开辟了新途径，并应用于高分辨率医学成像和生物样本的显微镜研究。与传统 SDI 相比，消除线性化的需要可以降低 OCT 系统的成本，并为提高正面 OCT 图像的生成速度开辟了潜在途径。 (c) 2013 年美国光学学会
Conventional spectral domain interferometry (SDI) methods suffer from the need of data linearization. When applied to optical coherence tomography (OCT), conventional SDI methods are limited in their 3D capability, as they cannot deliver direct en-face cuts. Here we introduce a novel SDI method, which eliminates these disadvantages. We denote this method as Master - Slave Interferometry (MSI), because a signal is acquired by a slave interferometer for an optical path difference (OPD) value determined by a master interferometer. The MSI method radically changes the main building block of an SDI sensor and of a spectral domain OCT set-up. The serially provided signal in conventional technology is replaced by multiple signals, a signal for each OPD point in the object investigated. This opens novel avenues in parallel sensing and in parallelization of signal processing in 3D-OCT, with applications in high-resolution medical imaging and microscopy investigation of biosamples. Eliminating the need of linearization leads to lower cost OCT systems and opens potential avenues in increasing the speed of production of en-face OCT images in comparison with conventional SDI. (c) 2013 Optical Society of America