Coherent scattering noise reduction method with wavelength diversity detection for holographic data storage system

Yusuke Nakamura, Taku Hoshizawa, Yuzuru Takashima

Research output: Research - peer-reviewArticle

Abstract

A new method, wavelength diversity detection (WDD), for improving signal quality is proposed and its effectiveness is numerically confirmed. We consider that WDD is especially effective for high-capacity systems having low hologram diffraction efficiencies. In such systems, the signal quality is primarily limited by coherent scattering noise; thus, effective improvement of the signal quality under a scattering-limited system is of great interest. WDD utilizes a new degree of freedom, the spectrum width, and scattering by molecules to improve the signal quality of the system. We found that WDD improves the quality by counterbalancing the degradation of the quality due to Bragg mismatch. With WDD, a higher-scatteringcoefficient medium can improve the quality. The result provides an interesting insight into the requirements for material characteristics, especially for a large-M/# material. In general, a larger-M/# material contains more molecules; thus, the system is subject to more scattering, which actually improves the quality with WDD. We propose a pathway for a future holographic data storage system (HDSS) using WDD, which can record a larger amount of data than a conventional HDSS.

LanguageEnglish (US)
Article number09NA08
JournalJapanese Journal of Applied Physics
Volume56
Issue number9
DOIs
StatePublished - Sep 1 2017

Fingerprint

Coherent scattering
Noise abatement
Data storage equipment
Wavelength
coherent scattering
data storage
noise reduction
wavelengths
Scattering
scattering
Molecules
molecules
Diffraction efficiency
Holograms
Degradation
degrees of freedom
degradation
requirements
diffraction

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Coherent scattering noise reduction method with wavelength diversity detection for holographic data storage system. / Nakamura, Yusuke; Hoshizawa, Taku; Takashima, Yuzuru.

In: Japanese Journal of Applied Physics, Vol. 56, No. 9, 09NA08, 01.09.2017.

Research output: Research - peer-reviewArticle

@article{8c05b388bd464ff3ba0904043cf0fd89,
title = "Coherent scattering noise reduction method with wavelength diversity detection for holographic data storage system",
abstract = "A new method, wavelength diversity detection (WDD), for improving signal quality is proposed and its effectiveness is numerically confirmed. We consider that WDD is especially effective for high-capacity systems having low hologram diffraction efficiencies. In such systems, the signal quality is primarily limited by coherent scattering noise; thus, effective improvement of the signal quality under a scattering-limited system is of great interest. WDD utilizes a new degree of freedom, the spectrum width, and scattering by molecules to improve the signal quality of the system. We found that WDD improves the quality by counterbalancing the degradation of the quality due to Bragg mismatch. With WDD, a higher-scatteringcoefficient medium can improve the quality. The result provides an interesting insight into the requirements for material characteristics, especially for a large-M/# material. In general, a larger-M/# material contains more molecules; thus, the system is subject to more scattering, which actually improves the quality with WDD. We propose a pathway for a future holographic data storage system (HDSS) using WDD, which can record a larger amount of data than a conventional HDSS.",
author = "Yusuke Nakamura and Taku Hoshizawa and Yuzuru Takashima",
year = "2017",
month = "9",
doi = "10.7567/JJAP.56.09NA08",
volume = "56",
journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",
issn = "0021-4922",
publisher = "Japan Society of Applied Physics",
number = "9",

}

TY - JOUR

T1 - Coherent scattering noise reduction method with wavelength diversity detection for holographic data storage system

AU - Nakamura,Yusuke

AU - Hoshizawa,Taku

AU - Takashima,Yuzuru

PY - 2017/9/1

Y1 - 2017/9/1

N2 - A new method, wavelength diversity detection (WDD), for improving signal quality is proposed and its effectiveness is numerically confirmed. We consider that WDD is especially effective for high-capacity systems having low hologram diffraction efficiencies. In such systems, the signal quality is primarily limited by coherent scattering noise; thus, effective improvement of the signal quality under a scattering-limited system is of great interest. WDD utilizes a new degree of freedom, the spectrum width, and scattering by molecules to improve the signal quality of the system. We found that WDD improves the quality by counterbalancing the degradation of the quality due to Bragg mismatch. With WDD, a higher-scatteringcoefficient medium can improve the quality. The result provides an interesting insight into the requirements for material characteristics, especially for a large-M/# material. In general, a larger-M/# material contains more molecules; thus, the system is subject to more scattering, which actually improves the quality with WDD. We propose a pathway for a future holographic data storage system (HDSS) using WDD, which can record a larger amount of data than a conventional HDSS.

AB - A new method, wavelength diversity detection (WDD), for improving signal quality is proposed and its effectiveness is numerically confirmed. We consider that WDD is especially effective for high-capacity systems having low hologram diffraction efficiencies. In such systems, the signal quality is primarily limited by coherent scattering noise; thus, effective improvement of the signal quality under a scattering-limited system is of great interest. WDD utilizes a new degree of freedom, the spectrum width, and scattering by molecules to improve the signal quality of the system. We found that WDD improves the quality by counterbalancing the degradation of the quality due to Bragg mismatch. With WDD, a higher-scatteringcoefficient medium can improve the quality. The result provides an interesting insight into the requirements for material characteristics, especially for a large-M/# material. In general, a larger-M/# material contains more molecules; thus, the system is subject to more scattering, which actually improves the quality with WDD. We propose a pathway for a future holographic data storage system (HDSS) using WDD, which can record a larger amount of data than a conventional HDSS.

UR - http://www.scopus.com/inward/record.url?scp=85028690677&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85028690677&partnerID=8YFLogxK

U2 - 10.7567/JJAP.56.09NA08

DO - 10.7567/JJAP.56.09NA08

M3 - Article

VL - 56

JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

T2 - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

SN - 0021-4922

IS - 9

M1 - 09NA08

ER -