Q.

Estimate optical power coupled into fiber of DH SLED having emission area of 1.96*10-5, radiance of 40 W/rcm2, numerical aperture of 0.2 and Fresnel reflection coefficient of 0.03 at index matched fiber surface.

A. 5.459*10-5
B. 1.784*10-3
C. 3.478*102
D. 9.551*10-5
Answer» D. 9.551*10-5
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