TABLE OF CONTENTS A commercial AM broadcast signal at 600 kHz has a wavelength of _________. A commercial FM broadcast signal at 1 MHz has a wavelength of ________. A communications carrier using a 6 GHz frequency has a wavelength of _______. All of these are through the atmosphere. Do you think the media will have an effect on the transmission ?
The visible spectrum uses wavelengths between 400 and 600 nm. Compare this amount of spectral width to that used in the commercial AM radio band (assume 500 1700 kHz) in terms of the ability to convey bits of information. Assume an efficiency of 1 bit/Hz in both cases.
A power of 5 pW is equal to how many nW ? A power of +5 dBm is equal to how many mW ? A frequency of 0.5 THz is equal to how many MHz ?
How much slower or faster will a signal at 1.3 micron wavelength move through a GaAs laser than through a silica fiber ?
A shorthand method that expresses a photon s energy uses electronvolts (EV). An electron volt is the energy needed to move the charge of an electron through a potential difference of I volt. The applicable relationship: Energy in EV=1.24/(wavelength in microns). Derive the relationship between a photon s energy in EV to that in Joules.
A power sensitive light detector receives 1 microwatt. If the optical signal is centered at 850 nm how many photons/sec are received ? If...
