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

Explain factors affecting permeability and hysterisis loss, Explain the fac...

Explain the factors affecting permeability and hysterisis loss. Factors affecting permeability and hysterisis loss: When the initial permeability is high, the hysterisis los

Evaluate discrete-time signal, Consider the following signals, sketch each ...

Consider the following signals, sketch each one of them and comment on the periodic nature: (a) x(t) = A cos(2πf 0 t + θ), where A, f 0 , and θ are the amplitude, frequency, and

Explain the methods of analysis for digital system, Q. Explain the Methods ...

Q. Explain the Methods of Analysis for digital system? Just as differential equations are used to represent systems with analog signals, difference equations are used for syste

Show typical electric power distribution system, Q. Show Typical electric p...

Q. Show Typical electric power distribution system? In central business districts of large urban areas, the primary distribution circuits consist of underground cables which ar

Factors contributing to high technical losses, Factors Contributing To High...

Factors Contributing To High Technical Losses Power distribution systems in developing countries have faced a phenomenal and rapid growth within the last two decades. Although

What is rxd, What is RXD? RXD- Receive Data Input This input pin of ...

What is RXD? RXD- Receive Data Input This input pin of 8251A gets a composite stream of the data to be received by 8251A.

Advantages and disadvantages of direct coupled coupling, Q. Mention the adv...

Q. Mention the advantages and disadvantages of direct coupled coupling?       Advantages:             1.Simple circuit due to minimum use of resistor             2.Low

How you can convert a galvanometer to a voltmeter, To convert a galvanomete...

To convert a galvanometer to a voltmeter, you should add a: a) High resistance in series b) High resistance in parallel c) Low resistance in series d) Low resis

3 phase meter, What is reading mechanism of a 3 phase meter?

What is reading mechanism of a 3 phase meter?

Can you explain binary number systems, Q. Can you explain Binary Number Sys...

Q. Can you explain Binary Number Systems? The Binary numbers are used to represent digital information because like most digital systems, binary numbers have only two possible

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