MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Optical Communications knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In waveguide dispersion, refractive index is independent of ______________ |
| A. | Bit rate |
| B. | Index difference |
| C. | Velocity of medium |
| D. | Wavelength |
| Answer» E. | |
| 2. |
The optical source used in a fiber is an injection laser with a relative spectral width / of 0.0011 at a wavelength of 0.70 m. Estimate the RMS spectral width. |
| A. | 1.2 nm |
| B. | 1.3 nm |
| C. | 0.77 nm |
| D. | 0.98 nm |
| Answer» D. 0.98 nm | |
| 3. |
What is pulse dispersion per unit length if for a graded index fiber, 0.1 s pulse broadening is seen over a distance of 13 km? |
| A. | 6.12ns/km |
| B. | 7.69ns/km |
| C. | 10.29ns/km |
| D. | 8.23ns/km |
| Answer» C. 10.29ns/km | |
| 4. |
A multimode graded index fiber exhibits a total pulse broadening of 0.15 sover a distance of 16 km. Estimate the maximum possible bandwidth, assuming no intersymbol interference. |
| A. | 4.6 MHz |
| B. | 3.9 MHz |
| C. | 3.3 MHz |
| D. | 4.2 MHz |
| Answer» D. 4.2 MHz | |
| 5. |
The maximum bit rate that may be obtained on an optical fiber link is 1/3 . |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
For no overlapping of light pulses down on an optical fiber link, the digital bit rate BT must be ___________ |
| A. | Less than the reciprocal of broadened pulse duration |
| B. | More than the reciprocal of broadened pulse duration |
| C. | Same as that of than the reciprocal of broadened pulse duration |
| D. | Negligible |
| Answer» B. More than the reciprocal of broadened pulse duration | |