Optical identification using a random phase mask

Wei Chia Su, Yu Weng Chen, Yueh Ouyang, Ching Cherng Sun, Bor Wang

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


We propose a novel method for optical identification by using a random phase mask. The identification system is based on a holographic correlator used to verify the access phase mask. The random phase function of the mask works as a code for identification. The database is a holographic memory that records the complex amplitude image of the random phase mask through angle multiplexing. The cross talk between different masks is small and the main restriction of the capacity in this system is the dynamic range of the recording material. Both the theory and the experiment are presented.

Original languageEnglish
Pages (from-to)117-123
Number of pages7
JournalOptics Communications
Issue number1-6
StatePublished - 15 Apr 2003


  • Optical holography
  • Optical security
  • Random phase encoding


Dive into the research topics of 'Optical identification using a random phase mask'. Together they form a unique fingerprint.

Cite this