Light propagation in the Fresnel region. New numerical approach

Sypek, Maciej

doi:10.1016/0030-4018(95)00027-6

Cited by 121 publications

(71 citation statements)

References 6 publications

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“…The propagation was calculated by means of the modi− fied convolution method [15,16]. The obtained light inten− sity in the z 1 plane is presented in Fig.…”

Section: Numerical Simulationsmentioning

confidence: 99%

Uniform illumination by diffractive shaping of independent light beams

Sobczyk

Sypek

Makowski

et al. 2011

Opto-Electronics Review

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This article presents a new optical set-up for illumination of a common area with a few independent light sources. The main aim is to create a uniform light distribution of a constant shape even if one of the light sources will stop working. In such a case, the shape of the light distribution should remain unchanged, however, the total light intensity will be lower. The novelty of the proposed solution is based on the usage of a small number of the independent light sources in opposite to a well known LED arrays approach. The beam shaping is made using Dammann gratings and specially designed blazed phase diffractive gratings. The article contains the theoretical analysis and the computer simulation verified by the experiment.

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“…The propagation was calculated by means of the modi− fied convolution method [15,16]. The obtained light inten− sity in the z 1 plane is presented in Fig.…”

Section: Numerical Simulationsmentioning

confidence: 99%

Uniform illumination by diffractive shaping of independent light beams

Sobczyk

Sypek

Makowski

et al. 2011

Opto-Electronics Review

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show abstract

“…We use Fresnel approximation [16], [17] to get the near-field distribution , which is given by where is the complex amplitude of the excitation at point on the 45 microcoupler. is the complex amplitude of the observed field at point , and the magnitude of wave vector and the distance from the upper surface of the 45 microcoupler to observation point.…”

Section: Thin-film Waveguide Couplersmentioning

confidence: 99%

Fully embedded board-level guided-wave optoelectronic interconnects

Chen¹,

Lin²,

Choi³

et al. 2000

Proc. IEEE

186

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“…the laser junction is composed of elementary fully coherent sources which are not mutually correlated. We perform the modelling of the active area of the laser diode in such a way that nonparaxial propagation [11][12][13][14] leads us to measured far field distribution. Finally, we use such an approach to design the diffractive structure shaping the beam coming from the LD in the expected way.…”

mentioning

confidence: 99%

“…The numerical calculations were based on the modified convolution method for a non-paraxial approach [11][12][13][14]. All calculations were carried out for the wavelength λ=0.904µm on th matri 16384×16384 points with the sampling 0.25μm×0.25μm.…”

mentioning

confidence: 99%