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

What is the per-unit slip at full load, Q. A three-phase, 60-Hz induction m...

Q. A three-phase, 60-Hz induction motor runs at almost 1800 r/min at no load, and at 1710 r/min at full load. (a) How many poles does the motor have? (b) What is the per-unit

Oscilloscope, Describe in detail the construction and working of digital ty...

Describe in detail the construction and working of digital type oscilloscope.

Show the dot convention, Q. For the coupled coils shown in Figure, a dot ha...

Q. For the coupled coils shown in Figure, a dot has been arbitrarily assigned to a terminal as indicated. Following the dot convention presented in the text, place the other dot in

Power factor correction, i want to prodused domestic power factor correctio...

i want to prodused domestic power factor correction like industial

Transistor in the common base configuration, Draw the circuit of transistor...

Draw the circuit of transistor in the common base configuration. Draw the Active, saturation and cut-off region. List the characteristics of Ideal Op-Amp. Sketch the pin diagram

What is elementary diode circuits, Q. What is Elementary Diode Circuits? ...

Q. What is Elementary Diode Circuits? Semiconductor diodes are used in a wide variety of applications. Their usage abounds in communication systems (limiters, gates, clippers,

Diode, #quetunnel diode stion..

#quetunnel diode stion..

Plagiarised Content, Your site is full of plagiarised content even though y...

Your site is full of plagiarised content even though you claim to be and I quote "Plagiarism Free". You should not be charging for this content, the site and service is a fraud.

Commercial television broadcasting, Commercial television broadcasting is a...

Commercial television broadcasting is allocated frequencies that fall in the VHF and UHF bands. Table lists the television channel allocations in the United States, with the channe

Explain sar instructions in 8086 family, Explain SAR instructions in 8086...

Explain SAR instructions in 8086 family with example and their effect on flag. SAR: Shift each bit of operand right through given number of bits, this instruction shifts eve

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