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английский) 3:
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this text consists of eight parts, which can be grouped into three paragraphs. in the first, describes the progress of optical communication, optical fibers, and how these new technologies have increased the speed of communication, and provided a new, dedicated service in the information. in the second part, discusses the development of effective лезеров and continual improvement ways for an optical fiber can transmit pulses of light transparency system without the need for amplification or regeneration. the third and final section, rather historic. it describes the revolution of information storage using the technology of optical disk, information is recorded by using a laser. optical technology is a cost-effective and versatile.
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