A four-port FBT coupler has 60‚âà√≠¬¨‚à´W optical power launched into port one. The output powers at ports 2, 3, 4 are 0.0025, 18, and 22 ‚âà√≠¬¨‚à´W respectively. Find the split ratio?$#

A four-port FBT coupler has 60‚âà√≠¬¨‚à´W optical power

1.	A four-port FBT coupler has 60‚âà√≠¬¨‚à´W optical power launched into port one. The output powers at ports 2, 3, 4 are 0.0025, 18, and 22 ‚âà√≠¬¨‚à´W respectively. Find the split ratio?$#
A.	42%
B.	46%
C.	52%
D.	45%
Answer» E.

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A four-port FBT coupler has 60‚âà√≠¬¨‚à´W optical power launched into port one. The output powers at ports 2, 3, 4 are 0.0025, 18, and 22 ‚âà√≠¬¨‚à´W respectively. Find the split ratio?$#

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