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

Determine the rate at which the magnitude falls, Q A high-pass filter circu...

Q A high-pass filter circuit is shown in Figure. Using a PSpice program and PROBE, obtain the Bode magnitude plot for the transfer function ¯H(f) = ¯V out / ¯V in for frequency ra

Explain the alphanumeric coding - bcd to decimal conversion, Explain the Al...

Explain the Alphanumeric Coding - bcd to decimal conversion? For the inherently binary world of computer, it is necessary to put all symbols, letters, numbers, and so on into bin

Important function of common control subsystem, Q. Important function of co...

Q. Important function of common control subsystem? If a call is destined to a number in an exchange other than present one processing the digits, initial translator generates t

The internal resistance of the zener diode, A 9.1V zener diode has a nomina...

A 9.1V zener diode has a nominal voltage fall at a test current of 28mA. The internal resistance of the zener diode is 5 ohms. Find the voltage drop across the zener diode at zener

Calculate the membrane areas, In a 3-stage continuous ultrafiltration proce...

In a 3-stage continuous ultrafiltration process, a solution is concentrated from 5 gm/Liter to 50 gm/Liter of protein. The final retentate is to have a flow rate of 1000 L/hr. The

Auxiliary carry fla - registers, Auxiliary Carry Fla - Registers If ca...

Auxiliary Carry Fla - Registers If carry  is generated  from D 3   to D 4 in the accumulator after any arithmetical or logical  operations. Auxiliary  carry flag (AC) is set

Explain cellular telephone systems, Q. Explain Cellular Telephone Systems? ...

Q. Explain Cellular Telephone Systems? Today radio-based systems make it possible for mobile people to communicate via cellular telephone systems while traveling on airplanes a

8 bit data to register - move immediate instruction , 8 bit  data to Regi...

8 bit  data to Register   This form  of the  instruction is used to copy 8 bit  data directly  to the register  location specified in  the instruction. The  instruction format i

Fereday law.., what does actually feredy law wants to proof.

what does actually feredy law wants to proof.

Show silicon n-channel jfet, Q. Given that a silicon n-channel JFET has V P...

Q. Given that a silicon n-channel JFET has V P = 5 V and I DSS = 12 mA, check whether the device is operating in the ohmic or active region when v GS =-3.2 V and i D = 0.5 mA.

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