Optical Communication Practice Test 8

1. Sampling rate for each speech channel on 32-channel PCM is 8 KHz each encoded into 8 bits. Determine the duration of multi-frame if duration of a frame is 125μs.

2. Determine RMS pulse broadening with mode coupling if pulse broadening is 0.6 over 8km.

3. Determine RMS pulse broadening over 8 km if total RMS pulse broadening is 5.8ns/km.

4. Determine ratio of SNR of coaxial system to SNR of fiber system if peak output voltage is 5V, quantum efficiency of 70%, optical power is 1mW, wavelength of 0.85μm.

5. ___________ is fabricated with tandem electrode.

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

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

8. ________technique involves an increase in the number of components required.

9. Calculate RZ pulse width if bit period is 60ps and separation of soliton pulses is 5.4.

10. The use of low impedance driving circuit may increase _____________