Abstract
The optoelectronics technology will play an important role in the progress of hardware technology. Glasses have long been used as a linear optical material before the discovery of lasers. However, with the availability of very high intensity laser light, the refractive indices of glasses are now known to exhibit reversible changes as a function of intensity (nonlinear optical property NLO). Glassy materials are one of those candidates for photonic switches because of their (1) ease of fabrication, (2) high transparency, (3) fast switching time, and (4) high chemical and thermal stabilities. Main interests in the research are that NLO glass has the potential to become a key material of all-optical switching devices which operate in picosecond or sub-picosecond response time, three orders of magnitude shorter than that of the limit attained by electronic switching devices. Using all-optical switches, optical parallel data processing systems and optical time domain multiplexing transmission systems will be developed in the future. Here, theory and applications of nonlinear optics were reviewed briefly, and the nonlinear optical properties of the glasses doped semiconductor were mentioned. Other optical properties like upconversion, photochromism and photoconduction were also reviewed.
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