Reduction of phase error on phase-only volume-holographic disc rotation with pre-processing by phase integral

YEH WEI YU, YUAN CHENG CHEN, KUN HAO HUANG, CHIH YUAN CHENG, TSUNG HSUN YANG, SHIUAN HUEI LIN, CHING CHERNG SUN*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, we present a study of observation of phase error of a volume holographic storage disc during the reading process when the disc is rotated or displaced in the theoretical calculation and the corresponding experiment. This additional phase error will dramatically decrease the bit error rate of a phase-only signal, even applying double-frequency shearing interferometry to retrieve the stored phase signal. Then we propose a novel approach to solve the problem. The stored signal is pre-processed by phase integral along the shearing direction so that applying the integral process to decode the phase signal is not necessary in the readout process. The proposed approach effectively reduces the error in phase retrieval and will be useful when applying double-frequency shearing interferometry in the readout process for volume holographic storage.

Original languageEnglish
Pages (from-to)28573-28583
Number of pages11
JournalOptics Express
Volume28
Issue number19
DOIs
StatePublished - Sep 2020

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