Experimental characterization for the binary two-dimensional optical storage channel

Fagoonee, L.; Moinian, Abdolhosein; Honary, Bahram; Lee, A. van der; Coene, W.

doi:10.1109/icc.2004.1313035

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…Pits with this diameter were mastered and first read-out signal waveforms yield excellent agreement between the scalar diffraction theory and the experiment [6].…”

Section: A Scalar Diffraction Modelmentioning

confidence: 99%

Signal processing and coding for two-dimensional optical storage

Immink

Coene

Lee

et al.

GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489)

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This paper introduces the concept of TwoDimensional Optical Storage (TwoDOS). In this concept, bits are written in a broad spiral consisting of a number of bitrows stacked together in a hexagonal packing. Bits with a value '1' are represented physically as circular pit-holes on the disc, while bits with a value '0' are characterized by the absence of such a pit-hole. A scalar diffraction model is used to calculate the signal levels for various diameters of the pits. A stripe-wise Viterbi detector is proposed to perform 2D bit-detection with a limited state complexity of the trellis. Simulation results are shown for various diameters of the pits. A 2D modulation code is applied to eliminate patterns that yield a high probability of erroneous detection.

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“…Pits with this diameter were mastered and first read-out signal waveforms yield excellent agreement between the scalar diffraction theory and the experiment [6].…”

Section: A Scalar Diffraction Modelmentioning

confidence: 99%

Signal processing and coding for two-dimensional optical storage

Immink

Coene

Lee

et al.

GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489)

Self Cite

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“…• By post-processing the retrieved signals, one can compensate the influence of neighbouring bits. Methods such as 'TWO Dimensional Optical Storage' (TWODOS) [24,25,26] or Matrix-Method Deconvolution (MMD) [27] do this on a two-dimensional scale.…”

Section: Future Of Optical Data Storagementioning

confidence: 99%

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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“…The signalprocessing path from photodetector signals to detected symbols comprises a cascade of signal processing blocks similar to that proposed for binary TwoDOS. 9 The work is structured as follows. Section 2 describes the linear channel model.…”

Section: Introductionmentioning

confidence: 99%

Low complexity symbol detection method for multilevel 2-D optical storage based on a linear channel model

Moinian¹,

Fagoonee²,

Honary³

2005

Opt. Eng.

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This version is available at https://strathprints.strath.ac.uk/37083/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Abstract. A symbol detection scheme based on the Viterbi algorithm that simultaneously processes subsets of 2-D data in the presence of Gaussian noise was recently proposed for binary 2-D optical storage ͑TwoDOS͒. In the case of multilevel TwoDOS, a straightforward fullfledged maximum likelihood symbol detector, or even the previous Viterbi-based algorithm, is not an ideal solution due to complexity restrictions. We propose a suboptimum low complexity symbol detector, which still performs within the accepted performance bound for optical storage. We describe the procedures involved in designing and developing a practical symbol detection scheme for multilevel TwoDOS by analyzing the signal values generated by a linear channel model in the presence of Gaussian noise. Our proposed detection scheme exploits the properties of the 2-D data format on the disk, and is flexible enough to accommodate performance and complexity restrictions for optical storage applications.

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Experimental characterization for the binary two-dimensional optical storage channel

Cited by 5 publications

References 9 publications

Signal processing and coding for two-dimensional optical storage

Signal processing and coding for two-dimensional optical storage

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

Low complexity symbol detection method for multilevel 2-D optical storage based on a linear channel model

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