[...]... 3-D Optical Storage 8.4.6 Photochemical Hole-Burning 3-D Storage 8.5 Holographic Optical Storage 8.5.1 Principle of Holography 8.5.2 Plane Holographic Storage 8.5.3 Stacked Holograms for 3-D Optical Storage 8.5.4 Volume Holographic 3-D Optical Storage 8.6 Near Field Optical Storage 8.7 Concluding Remarks References Exercises Chapter 9 9.1 9.2 9.3 9.4 9.5 9.6 9.7 Computing with Optics Introduction Parallel... application of which can range from very abstract artistic interpretations to very efficient scientific usages This chapter discusses the relationship between entropy information and optics Our intention is not to provide a detailed discussion, however, but to cover the basic fundamentals that are easily applied to optics We note that entropy information was not originated by optical scientists, but rather by... entropy information, interest in its application has never totally been absent from the optical standpoint As a result of the recent development of optical communication, signal processing, and computing, among other discoveries, the relationship between optics and entropy information has grown more profound than ever 2 1 Entropy Information and Optics 1.1 INFORMATION TRANSMISSION Although we seem to know... (1.28) where H(A/B) represents the amount of information loss (e.g., due to noise) or the equivocation of the channel, which is the average amount of information needed to specify the noise disturbance in the channel And H(B/A) is referred to as the noise entropy of the channel To conclude this section, we note that the entropy information can be easily extended to continuous product space, such as p(a)log2p(a)da,... Sensors 10.4 Summary References Exercises 589 589 600 612 613 615 Chapter 11 617 Information Display with Optics 11.1 I ntrod action 11.2 Information Display Using Acousto-optic Spatial Light Modulators 11.2.1 The Acousto-optic Effect 11.2.2 Intensity Modulation of Laser 11.2.3 Deflection of Laser 11.2.4 Laser TV Display Using Acousto-optic Devices 11.3 3-D Holographic Display 11.3.1 Principles of Holography... not only the source of energy necessary to live — plants grow up by drawing energy from sunlight; light is also the source of energy for information - our vision is based on light detected by our eyes (but we do not grow up by drawing energy from light to our body through our eyes) Furthermore, applications of optics to information technology are not limited to vision and can be found almost everywhere... interests in optical applications to information technology In view of the great number of contributions in this area, we have not been able to include all of them in this book Chapter 1 Entropy Information and Optics Francis T.S Yu THE PENNSYLVANIA STATE UNIVERSITY Light is not only the mainstream of energy that supports life; it also provides us with an important source of information One can easily imagine... therefore able to advance themselves above the rest of the animals on this planet Earth It is undoubtedly true that if humans did not have eyes, they would not have evolved into their present form In the presence of light, humans are able to search for the food they need and the art they enjoy, and to explore the unknown Thus light, or rather optics, provide us with a very valuable source of information, ... TRANSMISSION Although we seem to know the meaning of the word information, fundamentally that may not be the case In reality, information may be defined as related to usage From the viewpoint of mathematic formalism, entropy information is basically a probabilistic concept In other words, without probability theory there would be no entropy information An information transmission system can be represented by... temporal coded language is sent to the user Viewing a television show, for example, represents a one-way spatial-temporal transmission It is interesting to note that temporal and spatial information can be traded for information transmission For instance, television signal transmission is a typical example of exploiting the temporal information transmission for spatial information transmission On the . class="bi x0 y0 w0 h0" alt="" Introduction to Information Optics This page intentionally left blank Introduction to Information Optics Edited by FRANCIS T. S. YU The Pennsylvania State. artistic interpretations to very efficient scientific usages. This chapter discusses the relationship between entropy information and optics. Our intention is not to provide a detailed. represents a one-way spatial-temporal transmission. It is interesting to note that temporal and spatial information can be traded for information transmission. For instance, television