Chinese Optics Letters, 2011, 9 (5): 050604, Published Online: Apr. 22, 2011
Highly efficient fiber-to-chip evanescent coupling based on subwavelength-diameter optical fibers 
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Abstract
A novel, compact, and highly efficient fiber-to-chip evanescent coupling structure is proposed based on a subwavelength-diameter fiber. The coupling structure is characterized by a large misalignment tolerance and easy fabrication. The dependence of coupling efficiency on various parameters is calculated and analyzed. The simulation results show that a coupling efficiency as high as 95% can be obtained within a coupling length of <4 \mum.
Xiaowei Shen, Xinwan Li, Linjie Zhou, Zehua Hong, Xiaocao Yu, Ying Zhang, Jianping Chen. Highly efficient fiber-to-chip evanescent coupling based on subwavelength-diameter optical fibers[J]. Chinese Optics Letters, 2011, 9(5): 050604.
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