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Optical properties of the direct-coupled Y-branch filtersby using photonic crystal slabs |
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| Authors: | Tian Jie Ren Cheng Feng Shuai Liu Ya-Zhao Tao Hai-Hu Li Zhi-Yuan Cheng Bing-Ying Zhang Dao-Zhong and Jin Ai-Zi |
| Affiliation: | Laboratory of Optical Physics, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China; Laboratory of Micro Fabrication, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China |
| Abstract: | We fabricated a new type of two-dimensional photonic crystal slab filter. The resonant cavities were directly put into the waveguide arms. The optical transmissions of the filters were measured and the results show that the optimized two-channel filters give good intensity distribution at the output ports of the waveguide. A minimum wavelength spacing of 5~nm of the filter outputs is realized by accurately controlling the size of the resonant cavities. |
| Keywords: | crystal filter micro-cavity Y-branch splitter waveguide |
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