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Results tagged with optical-fibre
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user 50290
A flexible, transparent, fine fibre made of extruded silica to function as a wave guide to transmitting signals through light
4
votes
The speed of light is 3*10^8 m/s and data transmission rate of optical fiber is ~100 Tb/s, h...
First, the speed at which a signal propagates is irrelevant to bandwidth. Fiber optics, which have the highest bandwidths propagate signals at 2/3 the speed of light, but a 100 year old AM radio, cabl …
- 18.2k
1
vote
Waveguides and optical fibres
Making a rectangle a few wavelengths wide at optical frequencies would be expensive, but non-circular fibers are used in applications where polarization must be maintained:
(Taken from the Wikipedia …
- 18.2k
6
votes
Why do we have a limited bandwidth in electronics?
I've been looking around a bit on optical communications and it is said that the main advantage in using optical communications, namely optical fibers, lies in the gigantic bandwidth available, when …
- 18.2k
0
votes
What is the highest possible optical output power of an SLED?
The distance the data will be required to travel is 45km and the light source needs to transmit data at a bandwidth of 12MHz, and at a data rate of 12Mbps. Ideally, I want to use a light source with …
- 18.2k
1
vote
Why do simple optical fibers usually support only half-duplex communication?
Fiber is so cheap it's common to bury lots more than you need and just leave it for the future. Conversely receivers are not cheap, so you don't want to add unnecessary complexity if you don't have to …
- 18.2k
2
votes
Accepted
How do we choose refractive index value in optical fiber design?
The difference between the two refractive index values determines the range of angles that can undergo total internal reflection, and thus the numerical aperture (range of angles that can propagate in …
- 18.2k
2
votes
How optical sources having narrower spectral width gives higher data rates?
Narrow line width sources don't necessarily have higher (digital) bandwidth, but they tend to be much more useful because:
Usually you're going to use the laser a carrier for a signal that will be i …
- 18.2k