High-transmission-efficiency 120° photonic crystal waveguide bend by using flexible structural defects
We numerically studied a high-output-transmission-efficiency low-reflection-loss 120° photonic crystal (PhC) waveguide bend based on a PhC slab with triangular-lattice air holes. The desired high output transmission efficiency was achieved by introducing flexible structural defects into the bend reg...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Institute of Electrical and Electronics Engineers
2014
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| Online Access: | http://psasir.upm.edu.my/id/eprint/37867/1/High-transmission-efficiency%20120%C2%B0%20photonic%20crystal%20waveguide%20bend%20by%20using%20flexible%20structural%20defects.pdf http://psasir.upm.edu.my/id/eprint/37867/ http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6872784 |
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| Summary: | We numerically studied a high-output-transmission-efficiency low-reflection-loss 120° photonic crystal (PhC) waveguide bend based on a PhC slab with triangular-lattice air holes. The desired high output transmission efficiency was achieved by introducing flexible structural defects into the bend region of the waveguide. Simulation results obtained using a 3-D finite-difference time-domain method indicated that normalized output transmission as high as 94.3% and negligible normalized reflection loss of 0.1% were obtained at the 1550-nm optical wavelength. Furthermore, the normalized output transmission was more than 90% within the entire optical C-band. In addition, sensitivity of the design parameters of the structural defect was studied to understand the tolerance in the fabrication error, while maintaining high output transmission efficiency. |
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