Find the core radius necessary for a single mode operation, Electrical Engineering

Assignment Help:

Find the core radius necessary for a single mode operation at 1320nm of a step index fibre with n1=1.48 and n2=1.478. What are the N.A and maximum acceptance angle for this fibre?

Ans:

For a single mode step index fibre, V≤2.405

Take V= 2.4

Given  Λ= 1320nm

             n1=1.48

             n2=1.478

We have        V= Πd (n12- n22)½  / λ                                                            

Substituting the values of V, n1, n2, d and solving for Λ, we get

              d= 1.311 x 10-5 m

Hence, core radius is given by

    r=d/2= 6.555µm

Numerical aperture

                    Sinψ = (n12- n22)½= (1.482- 1.4782)½ =0.076

Maximum acceptance angle,

               ψmax= sin-1(0.076)

                       = 4.411°


Related Discussions:- Find the core radius necessary for a single mode operation

3phase unbalanced load flow, under three phase 4 wire load unbalanced distr...

under three phase 4 wire load unbalanced distribution network how to calacualte the voltage across the load when no load resistance is specified, however the real and reactive powe

Draw the power triangle for each load, Q. Two balanced, wye-connected, thre...

Q. Two balanced, wye-connected, three-phase loads are in parallel across a balanced, three - phase 60- Hz, 208-Vsupply. The first load takes 12 kWat 0.6 power factor lagging, and t

Energy meter, Energy Meter 1. The energy meter is the cash register of...

Energy Meter 1. The energy meter is the cash register of the utility. Energy meters form a vital instrument of revenue realization for the Supply Utilities. Based on the meter

Deviations from purchasing power parity, Q. Does the existence of non-trada...

Q. Does the existence of non-tradable goods allow for deviations from Purchasing Power Parity? Answer: Yes the continuation of non-tradable goods permits deviations from Purch

Network theorems.., how to calculate voltage when 3 voltage sources are giv...

how to calculate voltage when 3 voltage sources are given?

How power amplifiers are classified, a. Describe briefly with suitable diag...

a. Describe briefly with suitable diagrams, how power amplifiers are classified with reference to operating point? b. Get the maximum efficiency of class A direct coupled power

Explain corrosion, Explain Corrosion. Corrosion: The process of constan...

Explain Corrosion. Corrosion: The process of constant eating (or destruction) up of metals (by the surface) by the surrounding is termed as corrosion. These metals are corroded

Octal to binary conversion, Octal to binary Conversion Conversion form ...

Octal to binary Conversion Conversion form  octal to binary  is the reverse  of this process. Express each  octal digit  in three bit  binary  equivalent. Ex. Convert 3576

What do you mean by pipelining in an 8086 processor, What do you mean by pi...

What do you mean by pipelining in an 8086 processor? The computer is composed of two kinds that operate  asynchronously single part called a BIU in the 8086,fetches instruction

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd