The fibre optics is a technology that uses glass or plastic fibres to transmit data over long distances. It involves the transmission of light through the fibre, which allows for high-speed data transfer.
Types of fibre optics:
- Single-mode fiber – used for long-distance communication, it has a narrow core that allows for a single mode of light to travel through it, resulting in less signal loss and higher bandwidth.
- Multi-mode fibre – used for shorter distances, it has a larger core that allows for multiple modes of light to travel through it, resulting in more signal loss and lower bandwidth.
Working of fibre optics:
Fibre works by sending pulses of light down a glass or plastic fibre. The fibre acts as a waveguide, meaning it guides the light along its length through internal reflection. The light is transmitted using a laser or LED, which converts electrical signals into light pulses. These light pulses travel down the fibre and are received at the other end by a photodetector, which converts the light back into an electrical signal.
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Advantages:
- High bandwidth – Ir can transmit data at much higher speeds than traditional copper wires.
- Low signal loss – Fibre can transmit data over much longer distances without the signal weakening.
- Immunity to electromagnetic interference – Unlike copper wires, it is not affected by electromagnetic interference from other sources.
- Lightweight and durable – Fibre is lightweight and can withstand harsh environments.
Disadvantages:
- Expensive – Fibre is more expensive to install and maintain than traditional copper wires.
- Fragile – Fibre optics are more fragile than copper wires and can be damaged easily.
- Requires specialized equipment – Fibre optics require specialized equipment for installation and maintenance.
Applications:
- Telecommunications – Fibre is widely used in telecommunications for long-distance communication.
- Internet – Fibre is used to connect homes and businesses to the internet.
- Medical equipment – Fibre optics are used in medical equipment such as endoscopes and lasers.
- Military and aerospace It is used in military and aerospace applications due to their durability and resistance to electromagnetic interference.