Q. _____________ provides operation at high transmission rate.

View solution

Q. In __________ the microwave frequency are modulated with an optical carrier and transmitted using a single wavelength channel.

View solution

Q. Which of the following techniques is easy to implement?

View solution

Q. Which of the following is the disadvantage of SCM?

View solution

Q. In CATV, the signal must be received with a carrier to noise ratio of between __________

View solution

Q. The IF signal can be input to a demodulator to recover the baseband signal.

View solution

Q. Which of the following is not a drawback of regenerative repeater?

View solution

Q. The term flexibility, in terms of optical amplifiers means the ability of the transmitted signal to remain in the optical domain in a long haul link.

View solution

Q. How many configurations are available for employment of optical amplifiers?

View solution

Q. Repeaters are bidirectional.

View solution

Q. It is necessary to ____________ the optical carriers at different speeds to avoid signal interference.

View solution

Q. The _________________ increases the system reliability in the event of an individual amplifier failure.

View solution

Q. Which of the following is not an application of optical amplifier?

View solution

Q. _________ reconstitutes a transmitted digital optical signal.

View solution

Q. _____________ are transparent to any type of signal modulation.

View solution

Q. _________________ imposes serious limitations on the system performance.

View solution

Q. __________ is the ratio of input signal to noise ratio to the output signal to noise ratio of the device.

View solution

Q. How many factors govern the noise figure of the device?

View solution

Q. What is the typical range of the noise figure?

View solution

Q. Calculate second order dispersion coefficient for path length L₂ 20 km and L₁ 160 km. Dispersion coefficient for L₂ is 17.

View solution