Calibration and characterization protocol for spectral-domain optical coherence tomography using fiber Bragg gratings.
Calibration and characterization protocol for spectral-domain optical coherence tomography using fiber Bragg gratings.
复制标题
使用光纤布拉格光栅的谱域光学相干断层扫描的校准和表征协议。
DOI：
10.1117/1.3552602
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发表时间：
2011
影响因子：
3.5
通讯作者：
Chen,Zhongping
中科院分区：
文献类型：
--
作者：
Eom,TaeJoong;Ahn,Yeh-Chan;Kim,Chang-Seok;Chen,Zhongping
本文提出了一种用于光纤布拉格光栅光谱域光学相干层析成像（SD-OCT）的校准方案，以获得定制光谱仪的对准因子和测量CCD像素域与波长域之间的非线性拟合函数。我们使用了五个中心波长不同的光栅，覆盖了宽带源光谱范围。它们都具有狭窄的光谱带宽（0.05 nm）和相同的反射率（92%），用于校准和对准定制的光谱仪。按照该方案实现的SD-OCT系统的对准系数为入射角44.37°，衍射角53.11°，焦距70.0 mm。根据对准因子重新计算光谱分辨率为0.187 nm。
We present a calibration protocol to obtain the alignment factors of a custom-made spectrometer and the nonlinear fitting function between the measured CCD pixel domain and the wavelength domain to apply to the spectral-domain optical coherence tomography (SD-OCT) using fiber Bragg gratings. We have used five gratings with different center wavelengths covering the broadband source spectral range. All have a narrow spectral bandwidth (0.05 nm) and the same reflectivity (92%) to calibrate and align the custom-made spectrometer. The implemented SD-OCT system following the proposed protocol showed the alignment factors as 44.37 deg incident angle, 53.11 deg diffraction angle, and 70.0-mm focal length. The spectral resolution of 0.187 nm was recalculated from the alignment factors.