Don't use ai to answer I will report you answer A step index, multimode, silica fibre is found, from measurements, to have a maximumacceptance (cone half angle) of 6.5°. Calculate the numerical aperture (NA) of the fibre, thecoupling efficiency for light from a typical laser diode and the corresponding refractive indexdifference between the core and cladding regions of the fibre. A cladding region refractiveindex of 1.45 should be assumed where necessary.Make an approximate estimate of the difference in phase velocity between the slowest andfastest modes in the fibre and comment on the relevance of this difference to pulse spreading.

Step-by-Step Solution: 1. Numerical Aperture (NA):The numerical aperture is calculated using the…

Answered: A step index, multimode, silica fibre…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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4 (a) “There are three types of optical fibers available for optic communication”. What are these three types and describe each. You may use diagrams to help you with your answers. (b) Pin diodes and Avalanche photodiodes (APD) are detectors which are used to convert the transmitted light back into an electrical signal I. Describe the operating principles of a PIN diode and an Avalanche photodiode II. The quantum efficiency of APD is 80% for the detection of radiation at a wavelength of 0.9 μm. When the incident optical power is 0.5 μW, the output current from the device (after avalanche gain) is 11 μA. Determine the multiplication factor of the photodiode under these conditions. (c) A silica optical fibre with a core diameter large enough to be considered by ray theory analysis has a core refractive index of 1.480 and a cladding refractive index of 1.44. Determine: I. The critical angle at the core–cladding interface II. The acceptance angle in air for the fibre.
Consider the surface of a chip made of Au rectangular patterns spaced a few microns apart ona glass surface. Give an example of each of the following.:(i) A molecule that can form a self-assembled monolayer on the Au patterns.(ii) A molecule that can form a self-assembled monolayer on glass.
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