MCQOPTIONS
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MCQOPTIONS
This section includes 22 Mcqs, each offering curated multiple-choice questions to sharpen your Optical Communication knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
_____________ results from a case of nonlinear dispersion compensation in which the nonlinear dispersion compensation in which the nonlinear chirp caused by self-phase modulation balances, postpones, the temporal broadening induced by group velocity delay. |
| A. | Four wave mixing |
| B. | Phase modulation |
| C. | Soliton propagation |
| D. | Raman scattering |
| Answer» D. Raman scattering | |
| 2. |
When three wave components co-propagate at angular frequency w1, w2, w3, then a new wave is generated at frequency w4, which is given by? |
| A. | w4 = w1 – w2 – w3 |
| B. | w4 = w1 + w2 + w3 |
| C. | w4 = w1 + w2 – w3 |
| D. | w4 = w1 – w2 + w3 |
| Answer» D. w4 = w1 – w2 + w3 | |
| 3. |
What is different in case of cross-phase modulation from self-phase modulation? |
| A. | Overlapping but same pulses |
| B. | Overlapping but distinguishable pulses |
| C. | Non-overlapping and same pulses |
| D. | Non-overlapping but distinguishable pulses |
| Answer» C. Non-overlapping and same pulses | |
| 4. |
The beating between light at different frequencies or wavelengths in multichannel fiber transmission causes ________ |
| A. | Attenuation |
| B. | Amplitude modulation of channels |
| C. | Phase modulation of channels |
| D. | Loss in transmission |
| Answer» D. Loss in transmission | |
| 5. |
Self-phase modulation can be used for _____________ |
| A. | Enhancing the core diameter |
| B. | Wavelength shifting |
| C. | Decreasing the attenuation |
| D. | Reducing the losses in the fiber |
| Answer» C. Decreasing the attenuation | |
| 6. |
Self-phase modulation causes modifications to the pulse spectrum. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Nonlinear effects which are defined by the intensity – dependent refractive index of the fiber are called as ________ |
| A. | Scattering effects |
| B. | Kerr effects |
| C. | Raman effects |
| D. | Tomlinson effects |
| Answer» C. Raman effects | |
| 8. |
Which thing is more dominant in making a fiber function as a bidirectional optical amplifier? |
| A. | Core material |
| B. | Pump source |
| C. | Cladding material |
| D. | Diameter of fiber |
| Answer» C. Cladding material | |
| 9. |
The nonlinear effects in optical fibers are large. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
SELF-PHASE_MODULATION_CAN_BE_USED_FOR?$ |
| A. | Enhancing the core diameter |
| B. | Wavelength shifting |
| C. | Decreasing the attenuation |
| D. | Reducing the losses in the fiber |
| Answer» C. Decreasing the attenuation | |
| 11. |
What is different in case of cross-phase modulation from self-phase modulation?$ |
| A. | Overlapping but same pulses |
| B. | Overlapping but distinguishable pulses |
| C. | Non-overlapping and same pulses |
| D. | Non-overlapping but distinguishable pulses |
| Answer» C. Non-overlapping and same pulses | |
| 12. |
The_beating_between_light_at_different_frequencies_or_wavelengths_in_multichannel_fiber_transmission_causes$ |
| A. | Attenuation |
| B. | Amplitude modulation of channels |
| C. | Phase modulation of channels |
| D. | Loss in transmission |
| Answer» D. Loss in transmission | |
| 13. |
_____________ results from case of nonlinear dispersion compensation in which the nonlinear dispersion compensation in which the nonlinear dispersion compensation in which the nonlinear chirp caused by self-phase modulation balances, postpones, the temporal broadening induced by group velocity delay. |
| A. | Four wave mixing |
| B. | Phase modulation |
| C. | Soliton propagation |
| D. | Raman scattering |
| Answer» D. Raman scattering | |
| 14. |
When three wave components co-propagate at angular frequency w1, w2, w3, then a new wave is generated at frequency w4, which is given by |
| A. | w4 = w1-w2-w3 |
| B. | w4 =w1+w2+w3 |
| C. | w4 =w1+w2-w3 |
| D. | w4 =w1-w2+w3 |
| Answer» D. w4 =w1-w2+w3 | |
| 15. |
Self-phase modulation causes modifications to the pulse spectrum. State whether the given statement is true or false? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 16. |
Nonlinear effects which are defined by the intensity – dependent refractive index of the fiber are called as$ |
| A. | Scattering effects |
| B. | Kerr effects |
| C. | Raman effects |
| D. | Tomlinson effects |
| Answer» C. Raman effects | |
| 17. |
_________ semiconductor laser sources generally have broader bandwidths. |
| A. | Injection |
| B. | Pulsed |
| C. | Solid-state |
| D. | Silicon hybrid |
| Answer» C. Solid-state | |
| 18. |
Which thing is more dominant in making a fiber function as bidirectional optical amplifier? |
| A. | Core material |
| B. | Pump source |
| C. | Cladding material |
| D. | Diameter of fiber |
| Answer» C. Cladding material | |
| 19. |
Linear scattering effects are _______ in nature. |
| A. | Elastic |
| B. | Non-Elastic |
| C. | Mechanical |
| D. | Electrical |
| Answer» B. Non-Elastic | |
| 20. |
Which of the following is not related to Kerr effects? |
| A. | Self-phase modulation |
| B. | Cross-phase modulation |
| C. | Four-wave mixing |
| D. | Stimulated Raman Scattering |
| Answer» E. | |
| 21. |
How many categories of nonlinear effects are seen in optical fibers? |
| A. | One |
| B. | Two |
| C. | Three |
| D. | Four |
| Answer» C. Three | |
| 22. |
The nonlinear effects in optical fibers are large. State whether the given statement is true or false. |
| A. | True |
| B. | False |
| Answer» C. | |