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Wavelength-division microlens interconnection using weakly diffracted Gaussian beam

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Abstract

Free-space digital optics is a new technology that exploits the ability of optics to handle thousands of light beams or information channels at once. This and other features of optics complement the strengths and weaknesses of purely electronic systems. A compact free-space optical system is proposed that uses an array of microlenses for chip-to-chip and board-to-board interconnections. Here the weakly diffracted Gaussian beam and wavelength-division architecture are utilized to improve the channel density and reduce crosstalk in a microlens interconnection system. Based on the simulation, we improve the channel capacity by 3.47 times (or reduce crosstalk by 93.1 dB) while maintaining the same crosstalk (or channel density) compared with the conventional microlens interconnection system. The nonperfect filtering effect of different wavelengths at the detector plane is also studied to fully investigate the properties of the proposed scheme. The parameter sensitivity of the proposed system is studied for completeness. From the simulations, the relationship between the interconnection distance and spot size at the detector plane is wavelength-independent. In addition, the spot size is more sensitive to change of microlens diameter than to other system parameters.

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Kuo, C.J., Su, Y.S. & Chang, H.T. Wavelength-division microlens interconnection using weakly diffracted Gaussian beam. Opt Quant Electron 28, 381–394 (1996). https://doi.org/10.1007/BF00287026

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Keywords

  • Communication Network
  • System Parameter
  • Material Processing
  • Optical System
  • Light Beam