摘要
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 μm.
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 μm.
基金
supported in part by the National "973" Program of China (No. 2011CB301700)
the National Natural Science Foundation of China (Nos. 60877012,61001074,and 61007039)
the Scientific and Technology Commission of Shanghai Municipal Government Project (Nos.10DJ1400402 and 09JC1408100)
the State Key Laboratory Projects (No. GKZD03000X)
the State Key Laboratory of Optoelectronics Project (No.2010KFB002)
