Chinese Optics Letters, 2011, 9 (4): 042501, Published Online: Mar. 18, 2011
Compact triplexer in two-dimensional hexagonal lattice photonic crystals Download: 825次
三重波分复用器 二维六角晶格光子晶体 折叠定向耦合器 250.5300 Photonic integrated circuits 230.5750 Resonators 230.7370 Waveguides
Abstract
We design a compact triplexer based on two-dimensional (2D) hexagonal lattice photonic crystals (PCs). A folded directional coupler (FDC) is introduced in the triplexer beside the point-defect micro-cavities and line-defect waveguides. Because of the reflection feedback of the FDC, high channel drop efficiency can be realized and a compact size with the order of micrometers can be maintained. The proposed device is analyzed using the plane wave expansion method, and its transmission characteristics are calculated using the finite-difference time-domain method. The footprint of the triplexer is about 12×9 μm, and its extinction ratios are less than –20 dB for 1310 nm, approximately –20 dB for 1490 nm, and under –40 dB for 1550 nm, making it a potentially essential device in future fiber-to-the-home networks.
Hongliang Ren, Jianping Ma, Hao Wen, Yali Qin, Zhefu Wu, Weisheng Hu, Chun Jiang, Yaohui Jin. Compact triplexer in two-dimensional hexagonal lattice photonic crystals[J]. Chinese Optics Letters, 2011, 9(4): 042501.