Light source for low-coherence interferometry combining LED and single mode optical fibre

被引：1
|
作者：
Buchta, Zdenek [1 ]
Mikel, Bretislav [1 ]
Rerucha, Simon [1 ]
Lazar, Josef [1 ]
Cip, Ondrej [1 ]
机构：
[1] Acad Scientist Czech Republ, Inst Sci Instruments, Brno, Czech Republic
来源：
PHOTONICS, DEVICES, AND SYSTEMS V | 2011年 / 8306卷
关键词：
Low-coherence interferometry; high-luminescent LED; optical fibre; gauge block; ALGORITHM;
D O I：
10.1117/12.912599
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper describes a pilot experiment of optimization of a white-light source for a low-coherence interferometry. The white-light source combines the light beams generated with colour LEDs. By modelling of the white light spectra, a contrast of a white light interference fringe could be changed and set to the maximal value. Hereafter, a concept of the light source for the low-coherence interferometry based on high-luminescent LED and single mode optical fibres is presented. The design comes out form a requirement to have an output beam combining a white-light beam and a laser beam. In the case of coaxial white-light and laser beam, the white-light interferometer is precisely combined with an incremental laser interferometer. This combination allows doing online surface diagnostics with high precision. The optimized white light source is designed to be a crucial part of an experimental setup for the surface diagnostics and automatic calibration of gauge blocks.
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页数：5
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