Thermal stabilization of a fiber-based channeled spectropolarimetry
Thermal stabilization of a fiber-based channeled spectropolarimetry
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DOI：
10.1117/1.oe.58.12.124102
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发表时间：
2019-12
影响因子：
1.3
通讯作者：
A. Altaqui;M. Kudenov
中科院分区：
文献类型：
--
作者：
A. Altaqui;M. Kudenov
抽象的。偏振分光光度法（CSP）是一种光谱调制技术，它可以消除偏振测量的快照。在不同的分光偏振方法中，基于光纤的技术是特定生物医学程序（如内窥镜检查）的基本要求。然而，光纤对温度变化表现出高灵敏度，这随后在偏振重建中引起误差。我们提出了一种基于光纤的CSP的校准技术，利用相移干涉法（PSI）准确地获取和解调光纤的延迟相位。该技术提供了对温度变化的高鲁棒性和改进的极化重建性能。实验结果表明，PSI校准提供更高的稳定性和准确性，在不同的光纤温度，相比，参考光束校准。
Abstract. Channeled spectropolarimetry (CSP) is a spectral modulation technique that furnishes snapshot polarimetric measurements. Among the different spectropolarimetric methods, fiber-based techniques are fundamental requirements in specific biomedical procedures, such as endoscopy. However, the optical fiber exhibits high sensitivity to temperature changes, which subsequently incurs errors in the polarimetric reconstructions. We present a calibration technique for fiber-based CSP that leverages phase-shifting interferometry (PSI) to acquire and demodulate the fiber’s retardation phase accurately. This technique provides high robustness against temperature variations and improved polarimetric reconstruction performance. Experimental results demonstrated that the PSI calibrations offer higher stability and accuracy, at different optical fiber temperatures, as compared to reference-beam calibrations.