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    What Exactly is an Optical Mode in a Waveguide?

    With the string, it is a physical object already, so it's wavelength is twice as long in the n=2 vs n=1 mode. , and if it's a guitar, the pitch will be different. With an electromagnetic radiation, I understand wavelength in the direction of propagation of course, but it is a little tricky for...
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    What Exactly is an Optical Mode in a Waveguide?

    I have been working with equations throughout the semester and using them to find cutoff frequencies and such, but when you say something like TE10, TE20, TE21, etc., I am realizing that I am having trouble getting a physical idea of what exactly these things are. Of course if you transmit at a...
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