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Both sides previous revision Previous revision Next revision | Previous revision | ||
network:fiber-optics [2022/08/29 09:42] – mh | network:fiber-optics [2024/02/22 10:11] (current) – [To Do on this page] mh | ||
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<WRAP round info> | <WRAP round info> | ||
- | **The speed of light in free space is 3.10⁸m/ | + | **The speed of light in free space is $c = 3.10⁸ |
Fiber optics propagate light using the **[[https:// | Fiber optics propagate light using the **[[https:// | ||
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<WRAP round tip> | <WRAP round tip> | ||
- | $\lambda=\frac{1}{f}$ and $f=\frac{1}{\lambda}$ where $\lambda$ is wavelength ($nm$) and $f$ is frequency ($Hz$) | + | $\lambda=\frac{c}{f}$ and $f=\frac{c}{\lambda}$ where $\lambda$ is wavelength ($nm$) and $f$ is frequency ($Hz$) and $c$ is the speed of light (approx. 2.10⁸ m/s) |
**As wavelength increases, frequency decreases.** | **As wavelength increases, frequency decreases.** | ||
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==== Electromagnetic spectrum ==== | ==== Electromagnetic spectrum ==== | ||
- | **Infra**red and **Ultra**violet are prefixed as such using **frequency** in mind : infrared has a lower frequency than the red in the visible spectrum (thus a higher wavelength) and ultraviolets have a higher frequency than the edge of our visible spectrum (thus a lower wavelength) | + | {{network:light_spectrum-cropped.png? |
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+ | <WRAP round tip> | ||
+ | **Infra**-red and **Ultra**-violet are prefixed using **frequency** in mind : | ||
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+ | *infrared has a lower frequency than the red in the visible spectrum (thus a higher wavelength) | ||
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+ | * ultraviolets have a higher frequency than the edge of our visible spectrum (thus a lower wavelength) | ||
+ | </ | ||
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<WRAP round todo> | <WRAP round todo> | ||
Insert electromagnetic chart. | Insert electromagnetic chart. | ||
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- | Give both spectrums and highlight the relation between nm and Hz. As wavelength goes up, frequencies go down, etc. | ||
Link to wikipedia page on light spectrum. | Link to wikipedia page on light spectrum. |