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Unformatted text preview: The fiber’s loss is 4 dB/km. Compute the power in the fiber at 1 m, 1 km, and 10 km. Repeat this problem if the fiber now has NA = 0.5 and a loss of 500 dB/km. Problem 4: Two multimode fibers are being connected with an air gap between them. The air gap is now filled with an indexmatching fluid that is not perfect: It has a refractive index of 1.4, while the fiber core has an index of 1.48. Compute the reflectedpower level (in dB) with respect to the incidentpower level. Include the two interfaces (fibertomatching fluid and matchingfluidtofiber)....
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 Spring '11
 kasab
 1 km, 1 m, 3mm, 5 MW, 10 km

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