Noise characterization of supercontinuum sources for low-coherence interferometry applications.
Noise characterization of supercontinuum sources for low-coherence interferometry applications.
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DOI：
10.1364/josaa.31.002703
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发表时间：
2014-12-01
期刊：
影响因子：
--
通讯作者：
Wax A
中科院分区：
文献类型：
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作者：
Brown WJ;Kim S;Wax A
我们研究了超连续谱光源用于低相干干涉测量应用时的噪声特性。第一个应用是多散射低相干干涉（ms 2/LCI）系统，其中需要高功率和长图像采集时间来深入组织成像。对于这个系统，我们比较了来自不同供应商的两个超连续谱源的噪声特性。两个源都具有长期漂移，这限制了信号平均有利于降低噪声的时间量。第二种应用是高分辨率光学相干断层扫描系统，其中需要宽带光以获得高轴向分辨率。对于这个系统，我们比较的噪声性能的两个超连续光源和光源的基础上，四个超发光二极管（SLD）使用成像对比度作为比较度量。我们发现，NKT SuperK具有上级噪声性能相比，FioconSC-450-4，但既不符合性能的SLD。
We examine the noise properties of supercontinuum light sources when used in low coherence interferometry applications. The first application is a multiple-scattering low-coherence interferometry (ms2/LCI) system where high power and long image acquisition times are required to image deep into tissue. For this system we compare the noise characteristics of two supercontinuum sources from different suppliers. Both sources have long term drift that limits the amount of time over which signal averaging is advantageous for reducing noise. The second application is a high resolution optical coherence tomography system where broadband light is needed for high axial resolution. For this system we compare the noise performance of the two supercontinuum sources and a light source based on four superluminescent diodes (SLDs) using imaging contrast as a comparative metric. We find that the NKT SuperK has superior noise performance compared to the Fianium SC-450-4 but neither meets the performance of the SLDs.