Suppression of interference noise caused by Fresnel reflection in all-fiber white-light interferometer

Yuan Yonggui; Cheng Yongqing; Yang Jun; Zhang Haoliang; Lu Dongchuan; Lv Yan; Peng Feng; Li Hanyang; Zhang Xiaojun; Jiang Fuqiang; Yuan Libo

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Suppression of interference noise caused by Fresnel reflection in all-fiber white-light interferometer

机译：抑制全纤维白光干涉仪中菲涅耳反射引起的干扰噪声

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We propose methods to suppress the interference noise (IN) of an all-fiber white-light interferometer (WLI), which is caused by the residual Fresnel reflective beam. The methods are proposed to ensure a wide dynamic range and enhance the accuracy of measurement. IN can cause misjudgment of the realistic optical characteristic parameters, such as the fault diagnosis and polarization coupling of the optical devices under test. In addition, IN can reduce the dynamic range of the WLI. The optical path mismatch (OPM) method and the intensity suppression (IS) method by changing the positions and intensity of the IN are presented. The two suppression methods can successfully restrain IN caused by the Fresnel reflection beams. The experimental results show that IN is successfully suppressed by the OPM method or restrained by IS method in interferograms, and the dynamic range can achieve 85 dB without IN. (C) 2017 Optical Society of America.

机译：我们提出了抑制全纤维白光干涉仪（WLI）的干扰噪声（IN）的方法，这是由残余菲涅耳反射梁引起的。提出了该方法，以确保宽动态范围，提高测量的准确性。在可能导致逼真的光学特性参数的误操作，例如被测光学装置的故障诊断和偏振耦合。此外，可以减少WLI的动态范围。通过改变in的位置和强度，提出了光路错配（OPM）方法和强度抑制（IS）方法。两种抑制方法可以成功地抑制由菲涅耳反射光束引起的。实验结果表明，通过OPM方法成功抑制或者通过干涉图中的方法来抑制，并且动态范围可以在没有进入的情况下实现85 dB。（c）2017年美国光学学会。

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《Applied optics》 |2017年第31期|共6页
作者
Yuan Yonggui; Cheng Yongqing; Yang Jun; Zhang Haoliang; Lu Dongchuan; Lv Yan; Peng Feng; Li Hanyang; Zhang Xiaojun; Jiang Fuqiang; Yuan Libo;
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Harbin Engn Univ Key Lab In Fiber Integrated Opt Minist Educ China Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Coll Sci Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Key Lab In Fiber Integrated Opt Minist Educ China Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Coll Sci Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Coll Sci Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Coll Sci Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Key Lab In Fiber Integrated Opt Minist Educ China Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Key Lab In Fiber Integrated Opt Minist Educ China Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Key Lab In Fiber Integrated Opt Minist Educ China Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Key Lab In Fiber Integrated Opt Minist Educ China Harbin 150001 Heilongjiang Peoples R China;

Harbin Engn Univ Key Lab In Fiber Integrated Opt Minist Educ China Harbin 150001 Heilongjiang Peoples R China;

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Suppression of interference noise caused by Fresnel reflection in all-fiber white-light interferometer

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