Imaging Systems

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Zinc selenide and related II–VI semiconductors are alternative options. Applications  Reading  Development  Laser Multimedia services and writing data in advanced CD and DVD systems of laser TVs printers. Multimedia services, including mobile multimedia, have huge growth potential. Multimedia delivery is one of the most significant developments in communications. It requires a robust infrastructure that can support powerful multimedia applications regardless of the computer or the mobile services.

Reactive ion etching Reactive ion etching (RIE) is a plasma etching technique used in the microelectronics industry to etch material deposited on wafers. A reactive gas species is added to a discharge chamber. A plasma is formed and breaks the gas molecules into fragments, many of which become ionised in the plasma. The ionised fragments then accelerate to electrode surfaces in the discharge chamber. The main advantage of RIE is improved directionality. Directionality is important because smaller and smaller devices require deeper and deeper etching.

InP is bonded to the silicon chip and generates light when a voltage is applied to the chip. The laser can be used in PICs and in high-capacity integrated optical transceivers. PICs can contain hundreds of hybrid lasers for use in personal computers, servers and data centres. The technology will be very important for the future development of optical communications. Silicon chips could be used as data pipes that carry terabits of information. Here silicon acts as a waveguide that can route, detect and modulate light.

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