MCQOPTIONS
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MCQOPTIONS
This section includes 4 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. |
Calculate the splitting loss if a 30 30 port multimode fiber star coupler has 1 mW of optical power launched into an input port. |
| A. | 13 dB |
| B. | 15 dB |
| C. | 14.77 dB |
| D. | 16.02 dB |
| Answer» D. 16.02 dB | |
| 2. |
A four-port FBT coupler has 60 W optical power launched into port one. The output powers at ports 2, 3, 4 are 0.0025, 18, and 22 W respectively. Find the split ratio? |
| A. | 42% |
| B. | 46% |
| C. | 52% |
| D. | 45% |
| Answer» E. | |
| 3. |
A four-port multimode fiber FBT coupler has 50 W optical power launched into port 1. The measured output power at ports 2,3 and 4 are 0.003, 23.0 and 24.5 W respectively. Determine the excess loss. |
| A. | 0.22 dB |
| B. | 0.33 dB |
| C. | 0.45 dB |
| D. | 0.12 dB |
| Answer» B. 0.33 dB | |
| 4. |
The optical power coupled from one fiber to another is limited by ____________ |
| A. | Numerical apertures of fibers |
| B. | Varying refractive index of fibers |
| C. | Angular power distribution at source |
| D. | Number of modes propagating in each fiber |
| Answer» E. | |