The construction of a write-once-read-many-type optical write-read-head for volume holographic data storage
in disk-based photopolymer storage media is discussed. Its design is based on the photonic integration concept
called planar-integrated free-space optics. A proof-of-principle demonstrator was fabricated, it contains a 3mm
thick fused silica wafer that carries most passive components for the reference and the signal beam relay in
the form of diffractive optical elements, a translucent liquid crystal microdisplay, and the CCD sensor of a
webcam. Phenanthrenequinone-doped polymethylmethacrylate was chosen as storage material, a DPSS laser
with λ = 532nm serves as light source. We report about preliminary experiments to determine suitable exposure
parameters for holographic write-read operations, and on the use of data matrix codes for the encoding and
decoding of information.
KEYWORDS: Holography, Data storage, Head, Free space optics, Volume holography, Optical design, Holograms, Polymethylmethacrylate, Detector arrays, Holographic data storage systems
We discuss the micro-integration of an optical write-read head for disk-based volume holographic data storage. A
particular approach based on the design principle of
planar-integrated free-space optics and on photopolymer storage
materials is proposed. Numerical construction parameters are calculated and initial experimental results concerning the
performance of the photopolymer are presented.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
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.