Abstract
We demonstrate the design and simulation of a focused intense light beam by means of multi-layer Fresnel zone plate fabricated on the surface of and inside the core of a multi-mode optical fiber. We investigate both single layer and multi-layer Fresnel zone plate engraved intense light beam. Besides, we analyze various optical properties of the intense light beam including focusing characteristics, intensity, and beam profile at the near field and far field. Increase in the number of Fresnel zone plate layers inside the core of the optical fiber causes the increase in the intensity and focusing sharpness at the focal point of the focused intense light beam. In addition, we propose suitable fabrication technologies for forming Fresnel zone plate in the core of multi-mode optical fiber. Furthermore, we explore the potential application areas of the proposed intense light beam. We strongly believe that, the designed intense light beam would find numerous applications in a diverse field of science and technology.
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