How Do Optic Fibers Minimize Interference While Transmitting Information?

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Discussion Overview

The discussion centers on how optic fibers transmit information and the potential for interference due to different wavelengths of light traveling in the core. It explores concepts related to signal integrity, modulation, and the effects of dispersion in multi-mode fibers.

Discussion Character

  • Technical explanation, Debate/contested

Main Points Raised

  • Some participants question how information is transmitted in optic fibers, specifically regarding potential interference from different wavelengths of light.
  • One participant asserts that the speed of light is independent of wavelength, suggesting that the signal remains in the same state throughout transmission.
  • Another participant introduces the concept of dispersion as a design issue in multi-mode fibers, indicating that it can affect signal clarity.
  • A later reply acknowledges that while dispersion is a concern, it is managed to ensure the signal remains understandable at the receiver.

Areas of Agreement / Disagreement

Participants express differing views on the impact of wavelength on signal transmission and the role of dispersion, indicating that multiple competing views remain without a consensus.

Contextual Notes

The discussion does not resolve the complexities of how different wavelengths interact within the fiber or the specific implications of dispersion on signal quality.

kimmy510
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In optic fibers the how do v transmitt the information? will not there be interference of light as different wavelength of light travel in core?
 
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The speed that light travels is independent of the wavelength. So the signal at any point in the cable is in the same state, or modulation, as it was at transmission.
 
kimmy510 said:
In optic fibers the how do v transmitt the information? will not there be interference of light as different wavelength of light travel in core?

LostConjugate said:
The speed that light travels is independent of the wavelength. So the signal at any point in the cable is in the same state, or modulation, as it was at transmission.

Not quite -- dispersion can be a design issue in multi-mode fibers:

http://en.wikipedia.org/wiki/Fiber_optics

.
 
berkeman said:
Not quite -- dispersion can be a design issue in multi-mode fibers:

http://en.wikipedia.org/wiki/Fiber_optics

.

Ok I see. Though it is kept to a minimum so that the signal is still understandable at the receiver.
 

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