Application Gallery

A Bragg grating is an optical device in which there is a periodic variation in the effective refractive index of the structure. The waveguide Bragg grating is a type of one-dimensional photonic crystal structure that enables wavelength selection through periodic modulation of the refractive index. The impact of the geometrical parameters of the sidewall corrugation, such as depth or misalignment, on the performance of Bragg gratings can be analyzed in silicon waveguide Bragg gratings, as demonstrated by Wang et al.

The power splitter based on Y branch distributes optical power to two or more output devices in a certain ratio. In this example, we use SimWorks Finite Difference Solutions to simulate the insertion loss, transmitted power and S-parameters of a symmetric 50/50 Y-branch splitter.

Solar cell is a device that converts solar energy into electricity. When sunlight irradiates a semiconductor material with photovoltaic effect, electron-hole pairs (photogenerated carriers) are generated. An electric current can be produced by inducing electrodes at both ends of the solar cell. In this example, we simulate a planar silicon solar cell by SimWorks Finite Difference Solutions to calculate the absorption of solar energy (300-1100nm) and further to compute the photon generation rate and the corresponding photocurrent.

The self-collimation(SC) effect of photonic crystals(PCs) achieves collimated radiation with almost no diffraction effect when the incident light propagates along a particular direction of the crystal. Line defects in 2D PCs cause bending and splitting of the SC beam. In this example, the effect of "optical switching" can be achieved by altering the line defects (radius of the dielectric rod) in the photonic crystal.

Bragg fiber is a type of air-core fiber that allows light to propagate in the air core, which avoids problems caused by intrinsic material limitation. In this example, we use SimWorks Finite Difference Solutions to calculate the modes of the PC Bragg fiber described by Vienne et al and further compare the results with those from Uranus et al.