Figure out the waveguide width at cutoff (d) for each of TE0,TE1,TE2 and TE3 modes. Assume n1=1.48, n2=1.46 and wavelength is .82um. Sketch the transverse mode patterns (Ey(x)) at cutoff for TE0 and TE1.

m=(2d/lambda)*(sqrt(n1^2-n2^2))

I am looking for the relation as given in the attachment.

https://www.wlu.ca/documents/53119/notesch3.pdf

[Star Strider]

The document isn’t available. We can’t access that URL.

Download the PDF and attach it here using the ‘paperclip’ (or ‘staple’) icon.

[garry]

ok don't access the pdf i'll send you the calculated values and the equations to plot shortly... any help is hugely appreciated.

[Star Strider]

Download and attach the PDF to your original Question. (Use the ‘Edit’ function.) That way we know exactly what the problem statement is.

[garry]

Okay... These are my two equations and i need to plot these in one graph...:-

Equation 1:- (22.2*10^3)*sin((161*10^4)*x) x < d/2

Equation2 :- (42.32*10^9)*exp(-2.896*10^6) x > d/2

here d/2 = 5*10^-6 m.

Answer 1

[Star Strider]

Here you go:

d2 = 5E-6;
fv = @(x) [(22.2E+3)*sin((161E+4).*x).*(x<d2) + (42.32E+9)*exp(-2.896E+6.*x).*(x>=d2)];
x = linspace(0,2*d2);
figure(2)
plot(x, fv(x))
grid

producing:

[garry]

Thanks a lottt friend... you're the savior :)

[Star Strider]

My pleasure!

[garry]

Hiee Star Strider..I have tried a lott on this question.

If you could help me..it would be of greatt help.

----> Implement an error detection mechanism using the standard FCS algorithm Write two programs, call them "Generator" and "Verifier".

---> The Generator program reads from a standard input a "k-bit" message as a string of "0s and 1's" as a line of ASCII text. The generator program also reads from a second line a "(n+1)-bit" generator pattern also in ASCII. The Generator program outputs to a standard output a line of ASCII text with "k+n" 0's and 1's representing the message to be transmitted (including the original k-bit message + the n-bit FCS bits). It also outputs the polynomial (just as it reads it in).

---> The Verifier program reads in the output of the Generator program and outputs a message indicating whether it is correct or not.

---> Finally, write a program "Alter" that inverts one bit on the first line (assume that that the leftmost bit position is #1) but copies the rest of the two lines correctly. The output of this program should indicate whether the error is detected or not.

[Star Strider]

Communications engineering is far from my areas of expertise. I’m not at all familiar with the ‘FCS algorithm’. It might be best if you posted this as a new Question for others to see.

[garry]

This is the link where i have posted the exact question along with the flyer explaining the exact procedure..

http://www.mathworks.com/matlabcentral/answers/162038-error-detection-using-standard-fcs-algorithm