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Angela Amphawan Vivekanand Mishra Kashif Nisar Benjaporn Nedniyom 《Journal of Modern Optics》2013,60(20):1745-1752
This paper presents a qualitative, real-time backlighting positioning sensor for the alignment of an optical beam to a minutely deviated diffraction order axis to increase the power coupling efficiency into a multimode fiber in selective launches. Results show that the technique facilitates the alignment of the lenses to the first diffraction order axis and improves the power coupling efficiency into a multimode fiber. 相似文献