Optical phase multiplication multiple-value holography memory optical system
Forming 2 dimentional plane image, page data, reflected from the array of micromirrors of the bi-stable optical phase modulator, each mirror reflects light with that optical phase is modulated with corresponding to logical state either 1 or 0, and a bundle of lights reflected from micromirrors goes into pupil of lense and focused to focus point.
In this system, 0th order of light is only manupirated to use, and in the area adjacent to fucus point, the density of 0th order light beams reflected from micromirror array becomes to be very high.
In this state, reference light is irradiated to the area of media adjacent to fucus point, and it interfares with the focused bundle of data lights, forming interference fringes in tiny volume of the media,
then, sequentilly, next bundle of data lights are focused on and reference light is irradiated, and interferes with the next bundle of data lights, forming additionally different interference fringes in same tiny volume of the media, and so on. In this way, multiple data are recorded in same address od a media.
Next, the reference light is irradiated again to the fringes formed from multiple values in the address, data lights are reproduced and synthesized to one light at every address,
further, reading light that is commom for all address is generated by the bi-stable optical phase modulator, and the light is added to the synthesized data light at every address, generating final synthesized light at each address,
resulting in that the optical phase information in the synthesized data light are converted to an optical amplitude information in the final synthsized light,
an intensity of the final synthesized light is detected by image sensor.
This optical phase multiplication multiple-value holography memory optical system has no mechanical section, and is enabling to take simple configuration.
Based on the optical system above set forth2 bits multiplication - designing optical phase of light wave
Cow watching flower
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Updated: 10/10 2018