LI Wen-yu, SHI Tai-xia, ZHANG Yi-xin etc. A Four-port Channel Drop Filter in The Three-dimensional Woodpile Photonic Crystal[J]. Chinese Journal of Luminescence, 2018,39(7): 1036-1041
LI Wen-yu, SHI Tai-xia, ZHANG Yi-xin etc. A Four-port Channel Drop Filter in The Three-dimensional Woodpile Photonic Crystal[J]. Chinese Journal of Luminescence, 2018,39(7): 1036-1041 DOI: 10.3788/fgxb20183907.1036.
A Four-port Channel Drop Filter in The Three-dimensional Woodpile Photonic Crystal
A compact non-planar four-port channel drop filter was developed experimentally in the three-dimensional Woodpile photonic crystal with a complete band gap. It consisted of two waveguides separated by a defect in different layers of the photonic crystal. The property of frequency selecting of channel drop filter with sphere cavity
cube cavity
cuboids cavity and cuboids cavity rotating was discussed experimentally. The results show that the property of frequency selecting of channel drop filter can be realized whatever the cavity is symmetric or non-symmetric in the Woodpile structure. It indicated the output frequency can be effectually regulated by changing the symmetric of non-planar cavity. For a non-symmetric cavity
the output frequency can be adjusted as the rotation of the cavity. If the effective regulation mechanism is introduced
the output frequency can be adjusted continuously. The results provide a new idea and an important theoretical reference for the design of optical integrated devices.
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references
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