Acta Photonica Sinica, Volume. 47, Issue 12, 1206001(2018)
Coupling Efficiency and Influence Factors of Spatial Light into Few-mode Fiber
The coupling efficiency theory model of the spatial light into few-mode fiber in the different influence factor is established. Takes two-mode fiber for example to study the relative aperture effect on coupling efficiency. When the relative aperture is 0.17, the highest coupling efficiency is 82.96%. The coupling efficiency in the presence of tilt, defocus and random angular jitter is studied, the experiment show that when the lateral offset is 4 μm, the coupling efficiency of two-mode fiber is higher than single-mode fiber about 10.23%, when the axial offset is 125 μm, the coupling efficiency of two-mode fiber is higher than single-mode fiber about 11.24%, when the random jitter amplitude is 5 μm, the coupling efficiency of two-mode fiber is higher than single-mode fiber about 12.1%. Accordingly, the few-mode fiber can inhibit interference factor such as tilt, defocus and random angular jitter when the signal reception.
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WANG Chao, FAN Xue-bing, TONG Shou-feng, LI Ying-chao, JIANG Lun, LIU Zhuang, SHI Hao-dong, JIANG Hui-lin. Coupling Efficiency and Influence Factors of Spatial Light into Few-mode Fiber[J]. Acta Photonica Sinica, 2018, 47(12): 1206001
Received: Jul. 24, 2018
Accepted: --
Published Online: Jan. 10, 2019
The Author Email: Chao WANG (nicklo19992009@163.com)