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Q. |
A four-port multimode fiber FBT coupler has 50 μWoptical power launched into port 1. The measured output power at ports 2,3 and 4 are 0.003, 23.0 and 24.5 μW respectively. Determine the excess loss. |
A. | 0.22 db |
B. | 0.33 db |
C. | 0.45 db |
D. | 0.12 db |
Answer» A. 0.22 db |
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