Light travelling through an optical fiber (n=1.44) reached the end of the fiber and exit into...

Transcribed Image Text:

Light travelling through an optical fiber (n=1.44) reached the end of the fiber and exit into air. (a) If the incident angle at the end of the fiber is 30°. What is the refraction angle outside the fiber? (b) What happen if the incident angle is 50°? In non-metallic materials, absorption and transmission play an important role in their optical properties. a) What colours of light will be absorbed if the material has bandgap energy, Eg= 2.5 eV? b) What colours of light will be transmitted if the material has bandgap energy, Eg= 2.1 eV? c) What is the key principle that determine the absorption and transmission of a non- metallic materials? Consider a p-type Si sample doped with 10¹5 acceptors atoms cm³. The p-type Si has dimension of length L (1mm), width W (1mm) and depth D (0.1mm). The sample was illuminated with wavelength 2- 750 x 10° m at light intensity I= 100 W/m². The electron lifetime is 1 us. What is the photoconductivity of the p-type Si? Given that the hole mobility. = 450 x 10¹ m²V's, electron mobility = 1300 x 10' m'V's'. quantum efficiency, n = 1. Light travelling through an optical fiber (n=1.44) reached the end of the fiber and exit into air. (a) If the incident angle at the end of the fiber is 30°. What is the refraction angle outside the fiber? (b) What happen if the incident angle is 50°? In non-metallic materials, absorption and transmission play an important role in their optical properties. a) What colours of light will be absorbed if the material has bandgap energy, Eg= 2.5 eV? b) What colours of light will be transmitted if the material has bandgap energy, Eg= 2.1 eV? c) What is the key principle that determine the absorption and transmission of a non- metallic materials? Consider a p-type Si sample doped with 10¹5 acceptors atoms cm³. The p-type Si has dimension of length L (1mm), width W (1mm) and depth D (0.1mm). The sample was illuminated with wavelength 2- 750 x 10° m at light intensity I= 100 W/m². The electron lifetime is 1 us. What is the photoconductivity of the p-type Si? Given that the hole mobility. = 450 x 10¹ m²V's, electron mobility = 1300 x 10' m'V's'. quantum efficiency, n = 1.

Answer rating: 100% (QA)

Light in Optical Fiber and Material Interaction 1 Light in Optical Fiber a Refraction Angle Use Snells Law n1 sin1 n2 sin2 Where n1 Refractive index o... View the full answer