Optic fiber communication

In summary, when transmitting information through optic fibers, there will not be interference of light due to the independence of light's speed on its wavelength. However, dispersion can be a design issue in multi-mode fibers and is kept to a minimum to ensure the signal remains understandable at the receiver.
  • #1
kimmy510
8
0
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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  • #2
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.
 
  • #3
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

.
 
  • #4
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.
 
  • #5


Optic fiber communication is a widely used method for transmitting information through the use of light signals. In this system, the information is carried through a thin glass or plastic fiber, called the core, which is surrounded by a layer of cladding that reflects the light back into the core. The light signals travel through the core by bouncing off the walls of the fiber, using a principle known as total internal reflection.

To answer the question about interference, it is important to understand that optic fibers are designed to minimize interference. The core and cladding are carefully chosen to have different refractive indices, which ensures that the light signals stay contained within the core and do not escape into the cladding. Additionally, the fibers are coated with a protective layer that prevents external light from entering the core and causing interference.

Furthermore, optic fibers are designed to transmit light at specific wavelengths, which are carefully selected to avoid overlap and interference. This is achieved through the use of lasers, which produce light with a single wavelength, allowing for precise control and minimal interference.

Overall, while there may be some minor interference in optic fiber communication, the design and use of specific wavelengths and protective coatings greatly reduce its impact. Optic fibers remain a reliable and efficient method for transmitting information over long distances.
 

1. What is optic fiber communication?

Optic fiber communication is a method of transmitting information from one place to another by sending light signals through thin, flexible glass or plastic fibers. These fibers are designed to carry a large amount of data over long distances at high speeds.

2. How does optic fiber communication work?

Optic fiber communication works by converting electrical signals into light signals that are then sent through the fiber optic cables. The light signals travel through the fiber by constantly reflecting off the inner walls due to the principle of total internal reflection. At the receiving end, the light is converted back into electrical signals for the data to be processed.

3. What are the advantages of using optic fiber communication?

There are several advantages of using optic fiber communication, including high transmission speeds, low attenuation (signal loss), and immunity to electromagnetic interference. Optic fibers are also thinner and lighter than traditional copper wires, making them easier to install and maintain. They also have a longer lifespan and can carry a larger amount of data compared to copper wires.

4. What are the main components of an optic fiber communication system?

The main components of an optic fiber communication system are the transmitter, fiber optic cable, and receiver. The transmitter is responsible for converting electrical signals into light signals, which are then sent through the fiber optic cable. The receiver then converts the light signals back into electrical signals for the data to be processed.

5. What are the different types of optic fibers?

There are three main types of optic fibers: single-mode, multimode, and plastic fiber. Single-mode fibers have a small core and are used for long-distance communication, while multimode fibers have a larger core and are suitable for shorter distances. Plastic fibers are less expensive and are often used for short-distance and consumer applications.

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