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Proceedings Paper

The impact of fiber fusion on the focal ratio degradation and transmission
Author(s): Jian Li; Guanru Lyu; Shuqing Wang; Yonghui Hou
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Paper Abstract

We report results of the impact of fiber fusion splicing on Focal Ratio Degradation and transmission loss. Experiment use formed beam methods at wavelengths between 400 and 1000nm of Polymicro fiber. We test at five input f-ratio (f/2.5, f/3.75, f/5, f/75, f/10) conditions, the influence of fiber fusion splicing on FRD respectively, and test at f/5 input fratio condition, the influence of fiber fusion splicing on fiber transmission loss. A precision test system was designed to reduce the system error and human error. The measurement accuracy of the system reaches micron scale. The fiber end surface was prepared by large core fiber cutter, grinder and fusion splicing workstation. The fiber surface roughness is less than 1 micron and the surface angle is less than 0.5 deg. By optimize the cutting and polish process, adjusted the fusion parameters, a satisfactory results of optical fiber fusion obtained in the laboratory. The maximum transmission increase caused by the fiber fusion is less than 2%, average value is less than 1%; while the maximum FRD increase is less than 0.16 degrees. Our results indicate that fiber fusion technology can be adopted for repair failure optical fiber, replace the fiber clips and astronomical instrument construction.

Paper Details

Date Published: 9 September 2019
PDF: 10 pages
Proc. SPIE 11115, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts IX, 1111516 (9 September 2019); doi: 10.1117/12.2525141
Show Author Affiliations
Jian Li, National Astronomical Observatories (China)
Guanru Lyu, National Astronomical Observatories (China)
Shuqing Wang, National Astronomical Observatories (China)
Yonghui Hou, Nanjing Institute of Astronomical Optics & Technology (China)


Published in SPIE Proceedings Vol. 11115:
UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts IX
Allison A. Barto; James B. Breckinridge; H. Philip Stahl, Editor(s)

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