Photorefractive time-domain differential detection method for high-precision distinction of phase-modulated signals in holographic data storage

Masanori Takabayashi; Atsushi Okamoto

doi:10.1117/12.807795

2 February 2009 Photorefractive time-domain differential detection method for high-precision distinction of phase-modulated signals in holographic data storage

Masanori Takabayashi, Atsushi Okamoto

Author Affiliations +

Proceedings Volume 7225, Advanced Optical Concepts in Quantum Computing, Memory, and Communication II; 72250G (2009) https://doi.org/10.1117/12.807795
Event: SPIE OPTO: Integrated Optoelectronic Devices, 2009, San Jose, California, United States

Abstract

We develop a photorefractive time-domain differential detection (PR-TDDD) method in holographic data storage systems with considering the temporal response of photorefractive two-wave mixing (PR-TWM). Optimizing the parameters of PR-TDDD method provides high-precision distinction of phase-modulated signals, i.e. distinction of small phase difference. In PR-TDDD method, the phase information can be sequentially-distinguished by monitoring the output intensity of PR-TWM. This is because the output intensity of PR-TWM is changed when the signal phase is changed. In addition, the changing rate of the output intensity corresponds to that of the signal phase. The advantages of our method are high energy efficiency, alignment-free optics and the distinction of multi-valued phase-modulated signals. Especially, we focus attention on applying to phase-based holographic data storage systems, which can achieve homogeneous intensity distribution on recording plane, i.e. Fourier transform plane, in general, and high energy efficiency because of 100% white rate. More noteworthy is that multi-valued phase-based holographic data storage can be realized by using PR-TDDD method. In this work, we consider the important parameters in PR-TDDD method; signal-to-pump beam intensity ratio, photorefractive coupling strength, and photorefractive time constant. The balance between these parameters is important for realizing the high-precision distinction of phase-modulated signal.

Citation Download Citation

Masanori Takabayashi and Atsushi Okamoto "Photorefractive time-domain differential detection method for high-precision distinction of phase-modulated signals in holographic data storage", Proc. SPIE 7225, Advanced Optical Concepts in Quantum Computing, Memory, and Communication II, 72250G (2 February 2009); https://doi.org/10.1117/12.807795

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Holography

Data storage

Fourier transforms

Holographic data storage systems

Energy efficiency

Phase shift keying

Signal detection

Show All Keywords

Keywords/Phrases

Search In:

Publication Years