New answers tagged layer1
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As fiber optic transmit data using light. So we are getting/sending data at the speed of light ??
The speed of light in fiber is not the same as the speed of light in free space. Typically the speed of light in fiber is about two thirds of the speed of light in free space.
So, what are the hurdles ? What slows down Internet ?
Many many things, but two ...
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The speed that the packets/frames/whateaver travels on the fiber optics cable its about 68% of the speed of light on the vacuum, do you calculations again with this number.
Here follows a link for the presentation of Tiago Setti a specialist in fiber optics and dwdm: https://www.youtube.com/watch?v=95iZIoOcb7g.
In that presentation he clarified a lot of ...
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From Wikipedia:
A typical singlemode fiber used for telecommunications has a cladding made of pure silica, with an index of 1.444 at 1500 nm, and a core of doped silica with an index around 1.4475.[48] The larger the index of refraction, the slower light travels in that medium. From this information, a simple rule of thumb is that a signal using optical ...
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You seem to be confusing some things.
Yes, the light in a fiber optic cable travels at the speed of light in the medium (glass fiber), which is slower than the speed of light in a vacuum.
Where I think you are confused is that a sending device will only serialize data onto the fiber at a given rate. A 1 Gbps interface will serialize 1,000,000,000 bits of ...
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First a 10 Gbps network adapters use SFP+, not SFP.
Next, you can get a 10GBase-T SFP+ module for your adapter, rather than one of the fiber variants. In most cases, 10 Gbps adapters will have SPF+ slots so that you can choose which type of cabling you are using and get the correct SFP+ module.
You also need to understand Category-8 cabling, which is ...
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No we can not mix single mode and multi mode fiber cables due to difference core diameter in size
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