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.

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:

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garry 2014-11-10

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 2014-11-10

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 2014-11-11