A compact in-plane photonic crystal channel drop filter |
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| Authors: | Zhao Yi-Nan Li Ke-Zheng Wang Xue-Hua and Jin Chong-Jun |
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| Affiliation: | State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275, China |
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| Abstract: | This paper presents a novel in-plane photonic crystal channel drop filter. The device is composed of a resonant cavity sandwiched by two parallel waveguides. The cavity has two resonant modes with opposite symmetries. Tuning these two modes into degeneracy causes destructive interference in bus waveguide, which results in high forward drop efficiency at the resonant wavelength. From the result of numerical analysis by using two-dimensional finite-difference time-domain method, the channel drop filter has a drop efficiency of 96% and a Q value of over 3000, which can be used in dense wavelength division multiplexing systems. |
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| Keywords: | photonic band gap materials integrated optics optical waveguides optical communications devices |
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