Super high density optical disc by using multi-layer structure

Shida, Noriyoshi; Suga, Keiji; Higuchi, Takanobu; Iida, Takuya

doi:10.1109/ods.2000.847970

Cited by 4 publications

(3 citation statements)

References 1 publication

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“…This technique has already been implemented in dual-layer DVD, and will also be implemented in the BD. Care should be taken that the axial point spread function is sufficiently narrow to prevent interference in between the different layers [19,20]. The third dimension can also be explored by holographic storage [21,22].…”

Section: Future Of Optical Data Storagementioning

confidence: 99%

“…5. 20. Each of these two parts consists now of a bimodal waveguide with a waveguide-air facet on one side, and a connection through a mode splitter to output waveguides on the other side of the chip.…”

Section: Maskmentioning

confidence: 99%

“…5. 20. This component is placed a few times on the mask with a variation on the width of the MMIs and the waveguides.…”

Section: Components Maskmentioning

confidence: 99%

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Performance analysis of a multimode waveguide-based optical disk readout system

2004

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We propose a method to improve the optical resolution to read out optical disks, without making the spot size on the disk smaller than the diffraction limit. The idea is to reconstruct the bit pattern from the complete field profile (including amplitude and phase) of the light reflected from the disk. We measure the phase and amplitude information by picking up the wave front into different modes of a bimodal waveguide. Once picked up, these modes can be split by a photonic integrated circuit to be measured by separate detectors. By combining the information from the responses from the different modes, we can improve the bit error rate substantially.

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Section: Future Of Optical Data Storagementioning

confidence: 99%

Section: Maskmentioning

confidence: 99%

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Performance analysis of a multimode waveguide-based optical disk readout system

2004

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Impedance matching for the multilayer medium - toward a design methodology

Hock

2003

IEEE Trans. Microwave Theory Techn.

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Analyses of Signals from Dual-Layer Phase Change Optical Disks

Shintani

Maeda

Ariyoshi

et al. 2003

Jpn. J. Appl. Phys.

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We prove the existence of weak solutions to the steady compressible Navier-Stokes equations in the isentropic regime. We consider the two-dimensional problem with the slip boundary conditions. The proof is based on a new idea of the construction of approximative solutions which guarantees that the sought density belongs to the L ∞ (up to the boundary). Our approach improves the known methods, reducing the number of technical tricks.

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Super high density optical disc by using multi-layer structure

Cited by 4 publications

References 1 publication

Performance analysis of a multimode waveguide-based optical disk readout system

Performance analysis of a multimode waveguide-based optical disk readout system

Impedance matching for the multilayer medium - toward a design methodology

Analyses of Signals from Dual-Layer Phase Change Optical Disks

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