(a) Find the critical value of i in Figure 19-20 beyond which there is total internal reflection in a ZrF4-based infrared optical fiber whose core refractive index is 1.52 and whose cladding refractive index is 1.50.
(b) The loss of radiant power (due to absorption and scatter) in an optical fiber of length / is expressed in decibels per meter (dB/m), defined as

Calculate the quotient power out/power in for a 20.0-m-long fiber with a loss of 0.010 0 dB/m.

Transcribed Image Text:

Power out Power in 10 Vlo