For You Techies...what-is-the-maximum-bandwidth-possible-for-a-fiber-optic-cable
Oct 11, 2013 19:15:11 #
http://www.howtogeek.com/173597/what-is-the-maximum-bandwidth-possible-for-a-fiber-optic-cable/
A long "scientific" explanation in this 11+ minute video, with a few drawings, but mostly discussion including Planck's Constant and Quantum Physics principles, but in the end, you'll see that Fiber Optics have a HUGE capacity for Data Throughput.
We're just scratching the surface of capability.
Still interesting.
Phil
A long "scientific" explanation in this 11+ minute video, with a few drawings, but mostly discussion including Planck's Constant and Quantum Physics principles, but in the end, you'll see that Fiber Optics have a HUGE capacity for Data Throughput.
We're just scratching the surface of capability.
Still interesting.
Phil
sometimes pen and paper is best to explain a complex idea
Oct 11, 2013 23:07:57 #
To the best of my limited knowledge, it depends on the type of cable (i.e. Single and Multimode Fiber, etc.)
Almost unlimited in many cases, like the speed of light.
Here a quick search that I came up with.
http://www.ehow.com/about_6316840_bandwidth-capacity-fiber-optic-cable.html
Almost unlimited in many cases, like the speed of light.
Here a quick search that I came up with.
http://www.ehow.com/about_6316840_bandwidth-capacity-fiber-optic-cable.html
Oct 12, 2013 00:04:37 #
I understand your point, but the presenter is not describing the capacity we NOW have based on current electronic equipment capabilities, but rather the PHYSICAL limitations of Fiber Optics Cable, itself.
As he explains, that limit is set by the highest and lowest frequencies that fiber cable can physically pass without distorting the pulse shape.
As an example, the presenter just used visible wavelengths between red and blue, which does not include the IR that most optical data systems use. Even at the restricted R-B frequency range, he calculated that the shortest pulse would be 1 femto-Second or 0.000,000,000,000,001 sec or 1/1,000,000 of a nano second. So the fastest data switch would take 2 cycles (on/off) or about 2 femto-seconds. A byte of data would take about 16 Femto-seconds. As he explains, that would amount to about a Terra Byte of data in a few hundredths of a second. Doing the math and converting 8 bits = 1 byte to 16 femto-seconds, we come up with a 62.5 TerraByte/sec rate. That would be even higher throughput if the optical bandwidth of the fiber included IR and UV light.
Someday, we may have electronics that can actually use all that bandwidth capability.
Phil
As he explains, that limit is set by the highest and lowest frequencies that fiber cable can physically pass without distorting the pulse shape.
As an example, the presenter just used visible wavelengths between red and blue, which does not include the IR that most optical data systems use. Even at the restricted R-B frequency range, he calculated that the shortest pulse would be 1 femto-Second or 0.000,000,000,000,001 sec or 1/1,000,000 of a nano second. So the fastest data switch would take 2 cycles (on/off) or about 2 femto-seconds. A byte of data would take about 16 Femto-seconds. As he explains, that would amount to about a Terra Byte of data in a few hundredths of a second. Doing the math and converting 8 bits = 1 byte to 16 femto-seconds, we come up with a 62.5 TerraByte/sec rate. That would be even higher throughput if the optical bandwidth of the fiber included IR and UV light.
Someday, we may have electronics that can actually use all that bandwidth capability.
Phil
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