All Questions
7
questions
1
vote
2
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553
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Does refraction depend on the colour of light?
Consider passing red and yellow lights separately through the same interfaces and with the same angles of incidence.
Light of which colour will be refracted more?
This question was given to me. All I ...
- 119
1
vote
3
answers
262
views
Zero-dispersion wavelength
Please help me understanding the zero-dispersion wavelength in fibers.
I found this wiki-article on the topic. Accordingly:
"In a single-mode optical fiber, the zero-dispersion wavelength is the ...
- 113
1
vote
4
answers
480
views
Question about dispersion relation
I'm confused about the nonlinear dispersion relation like $\omega(k) ∝ k^2$.
Does this kind of wave have multiple frequencies?
I have always considered the linear dispersion case, $\omega(k) ∝ k$, ...
- 185
0
votes
1
answer
376
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Why is the two-term form for the Cauchy equation sufficient?
The general Cauchy equation for the relationship between refractive index and wavelength is given by,
$$n = A + \frac{B}{\lambda^{2}}+\frac{C}{\lambda^{4}}+...,$$
but this is often approximated to
$$...
- 1
1
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2
answers
1k
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Dispersion through Glass Slab
My questions related Dispersion through Glass Slab:
Why does a parallel surface makes a difference?
Why is that light do get disperse in a prism and a glass slab at surface one but at backs normal ...
user232991
0
votes
2
answers
170
views
Dispersion and wavelength
Why does dispersion increase with wavelength? If I understand correctly, refractive index is decreasing with wavelength. As a result, greater wavelengths are traveling faster. How does this cause the ...
- 103
1
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1
answer
3k
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Refractive index and wavelength relation [duplicate]
In general, the refractive index of a certain medium tends to decrease with increasing wavelength.
But are there any materials in which the opposite phenomenon occurs? That is, in which the ...
user173119