Q. ______________ are the devices which are employed to eliminate the laser chirp.

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Q. _____________ provides operation at high transmission rate.

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

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

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

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

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

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

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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.

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

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Q. Repeaters are bidirectional.

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

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

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

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Q. _________ reconstitutes a transmitted digital optical signal.

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

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Q. _________________ imposes serious limitations on the system performance.

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

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

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

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