Answer Happy

= The average power density of the sunlight reaching the earth's atmosphere is 1000[w/m?) in the WA summer, and the average wavelength is 500[nm]. a) Calculate the amplitude values of the electric field and magnetic field components of this sunlight. (10P) b) The sunlight is incident normally on the surface of the lake, with the constitutive parameters &, = 80, y = 1, o = 50 [mS/m]. What is the power density of sunlight penetrating the lake? c) An alga type under lake water needs a power density of at least -50 dB[W/m²] to perform photosynthesis. How deep in meters can the alga photosynthesis? d) (10 points) Sunlight is inserted into the rectangular fiber optical waveguides by focusing the sunlight with an apparatus on the roof of a skyscraper. Then, these optical waveguides are connected to the rooms of the building, and the light that comes through the optical waveguides is scattered with the help of an optical device to illuminate the room. Considering the dominant mode propagation, calculate the upper limit value of the longer edge of this waveguide. e) Is it possible to carry infrared lights with a wavelength of 1200 [nm] with this guide? If your answer is "yes", is there any disadvantage to this and if so, what is it? If your answer is "no", what is the reason for this situation? (10P) Note: When calculating (d) and (e), please consider the fiber optic waveguide as a rectangular waveguide with hollow and perfectly conductive walls whose theoretical principles are detailed in the curriculum