High-Density Optical Data Storage Enabled by the Photonic Nanojet from a Dielectric Microsphere

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概要

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• We discuss the usage of the photonic nanojet to detect deeply subwavelength pits in a metal substrate for the purpose of high-density optical data storage. Three-dimensional finite-difference time-domain (FDTD) computational solutions of Maxwell’s equations are used to analyze and design the system. We find that nanojet-illuminated pits having lateral dimensions of only $100\times 150$ nm2 yield a 40-dB contrast ratio. The FDTD simulation results show that pit-depth modulation and pit-width modulation can significantly increase the optical data-storage capacity.

• 2009-03-25

著者

• Sahakian Alan

  Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, IL 60208, U.S.A.

• Taflove Allen

  Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, IL 60208, U.S.A.

• Kong Soon-Cheol

  Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, IL 60208, U.S.A.

• Backman Vadim

  Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, U.S.A.

関連論文

• High-Density Optical Data Storage Enabled by the Photonic Nanojet from a Dielectric Microsphere

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