Study on inverse taper based mode transformer for low loss coupling between silicon wire waveguide and lensed fiber |
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Authors: | Guanghui Ren Yongpeng Cheng Yao Zhai |
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Affiliation: | State Key Laboratory on Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China |
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Abstract: | We have simulated the coupling loss of three types of Inverse Taper and taper-lensed fiber using three dimensional (3D) semi-vectorial beam propagation methods (BPM) respectively. Our results showed that the performances of exponential inverse taper and quadratic inverse taper were better than the commonly used linear inverse taper. Especially, for TM mode the improvement in the reduction of devices size is 53% and 136% for exponential and quadratic inverse taper compared with the linear inverse taper. |
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Keywords: | Integrated optics Inverse taper BPM Mode transformer |
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