The carrier c(t) = 100 cos( 2mf.t) is frequency modulated (FM) by the message signal m(t) = 5 coS( 20000rt), where f.= 100MH2. The peak-frequency deviation is 20 kHz. The modulated signal is a wide-band FM. 1. Determine the amplitude and frequency of all signal components that have a power level of at least 10% of the power of the unmodulated carrier component. 2. From Carson's rule, determine the approximate bandwidth of the FM signal.

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Fiber Optics

Fiber optics is a technology used to transmit the facts such as light or pulses with fiber or plastic over long distances. Visual fibers are about the width of a human hair strand and, when tied directly to a fiber-optic cable, can transmit multiple long-distance records and faster in different ways.