Chinese Optics Letters, 2009, 7 (4): 04309, Published Online: Apr. 27, 2009
Compact and broadband waveguide taper based on partial bandgap photonic crystals Download: 526次
光子晶体 部分带隙 过渡波导 060.1810 Buffers, couplers, routers,switches, and multiplexers 160.5298 Photonic crystals 230.7370 Waveguides
Abstract
Partial bandgap characteristics of parallelogram lattice photonic crystals are proposed to suppress the radiation modes in a compact dielectric waveguide taper so as to obtain high transmittance in a large wavelength range. Band structure of the photonic crystals shows that there exists a partial bandgap. The photonic crystals with partial bandgap are then used as the cladding of a waveguide taper to reduce the radiation loss efficiently. In comparison with the conventional dielectric taper and the complete bandgap photonic crystal taper, the partial bandgap photonic crystal taper has a high transmittance of above 85% with a wide band of 170 nm.
Jin Hou, Dingshan Gao, Huaming Wu, Zhiping Zhou. Compact and broadband waveguide taper based on partial bandgap photonic crystals[J]. Chinese Optics Letters, 2009, 7(4): 04309.