Beaming effect in multimode photonic crystal by using coupled waveguides

Wang, Qiong; Zhang, Jiayu; Li, Huaming; Cui, Yiping

doi:10.1016/j.physleta.2009.01.033

Cited by 3 publications

(2 citation statements)

References 24 publications

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“…As a result, many split light beams can be generated in the waveguide array by coupling among the waveguides. Hence the interference of these light beams after passing through the system leads to the desired directional emission [32].…”

Section: Introductionmentioning

confidence: 99%

Directional Emission from Photonic Crystal Waveguide Output by Terminating with CROW and Employing the PSO Algorithm

Bozorgi

Granpayeh

2011

Journal of the Optical Society of Korea

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We have designed two photonic crystal waveguide (PCW) structures with output focused beams in order to achieve more coupling between photonic devices and decrease the mismatch losses in photonic integrated circuits. PCW with coupled resonator optical waveguide (CROW) termination has been optimized by both one dimensional (1D) and seven dimensional (7D) particle swarm optimization (PSO) algorithms by evaluating the fitness function by the finite difference time domain (FDTD) method. The 1D and 7D-optimizations caused the factors of 2.79 and 3.875 improvements in intensity of the main lobe compared to the non-optimized structure, whereas the FWHM in 7D-optimized structure was increased, unlike the 1D case. It has also been shown that the increment of focusing causes decrement of the bandwidth.

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Section: Introductionmentioning

confidence: 99%

Directional Emission from Photonic Crystal Waveguide Output by Terminating with CROW and Employing the PSO Algorithm

Bozorgi

Granpayeh

2011

Journal of the Optical Society of Korea

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“…Gratinglike surfaces have played an important role in a variety of integrated optics applications because of their ability to couple light into and out of a waveguide [16][17][18][19], as well as to bring convenience in optoelectronic components integration and reduce the packaging complexity. However, in order to obtain high coupling efficiency and precisely control the coupling length based on such two gratinglike surfaces, it is very important to carefully design the surface structure of gratinglike surfaces.…”

Section: Introductionmentioning

confidence: 99%