Page 480 - Introduction to Information Optics

References 453

metal coating [65]. The small-apertured laser diode directly delivers optical
power to the near field substrate with unity efficiency. Light not passing
through the aperture will be recycled in the laser diode and no energy is
wasted.

8.7, CONCLUDING REMARKS

This chapter gave a brief overview of the basic mechanisms of materials that
have been employed to store optical information or light patterns. The
fundamental architectures for 3-D optical storage were discussed in detail. The
architecture for 2-D bit pattern optical storage and the 2-D holographic
storage were described. Novel near field optical storage that can store a bit in
an area smaller that the wavelength of light was also presented. The aim of this
chapter has been to present a broad survey of information storage with optics.
The main objective of the research in optical storage is to realize an ideal device
2 3
that can store a bit in an area of A or smaller, or a volume of A or smaller.

REFERENCES

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8.3 E. Hecht and A. Zajac, Optics, Addison-Wesley, Reading, Mass., 1974.
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