A first experimental demonstration has been realized to inscribe and read by homodyne detection two wavelength multiplexed Bragg gratings in a BaTiO/sub 3/ photorefractive crystal. A red spectrally filtered superluminescent diode was used for both recording and readout. The 50% reflectivity mirror is mounted on a piezo stack. Oscillating this mirror at frequency with an amplitude of about 50 nm allows to detect the homodyne signal with a lock-in amplifier. Experimental data show good agreement with the modeling. In conclusion, homodyne detection seems particularly adapted to increase the data transfer rates of bit-oriented holographic memories.
Homodyne detection applied to bit-oriented holographic memories
01.01.2005
790191 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
British Library Conference Proceedings | 1996
|Holographic Compact Disk Read-Only Memories
NTRS | 1996
|Holographic memories (Invited Paper) [3137-13]
British Library Conference Proceedings | 1997
|Holographic Memories for Image Processing Applications
British Library Conference Proceedings | 1994
|