Consider telecommunication through optical fibres. Which of...

Name: Problem 8, Chapter 28: Objective Physics for NEET
Uploaded: 2021-09-20T05:35:36-08:00
Duration: 2 min 31 s
Channel: Arpit Gupta
Description: Consider telecommunication through optical fibres. Which of the following statements is not true? (a) Optical fibres may have homogeneous core with a suitable cladding (b) Optical fibres can be of graded refractive index (c) Optical fibres are subject to electromagnetic interference from outside (d) Optical fibres have extremely low transmission loss

Consider telecommunication through optical fibres. Which of the following statements is not true? (a) Optical fibres may have homogeneous core with a suitable cladding (b) Optical fibres can be of graded refractive index (c) Optical fibres are subject to electromagnetic interference from outside (d) Optical fibres have extremely low transmission loss

Consider telecommunication through optical fibres. Which of the following statements is not true?
(a) Optical fibres may have homogeneous core with a suitable cladding
(b) Optical fibres can be of graded refractive index
(c) Optical fibres are subject to electromagnetic interference from outside
(d) Optical fibres have extremely low transmission loss

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Key Concepts

Transmission Loss

Transmission loss in optical fibers refers to the reduction in power of the light signal as it travels through the fiber. Optical fibers are engineered to have extremely low transmission losses, which is a key advantage for long-distance telecommunication applications.

Electromagnetic Interference Immunity

Optical fibers transmit light rather than electrical signals, making them inherently immune to electromagnetic interference. This characteristic is critical in environments with high electromagnetic noise, ensuring reliable and high-quality signal transmission.

Optical Fiber Structure

Optical fibers are constructed with a core and cladding, where the core is designed to guide light and the cladding has a lower refractive index to ensure total internal reflection. This basic configuration is essential for efficient light transmission over long distances in telecommunication systems.

Graded Refractive Index Profile

A graded-index fiber features a gradual change in the refractive index from the center of the core to its edge, which minimizes modal dispersion. This design improves the bandwidth and performance of the fiber by equalizing the propagation speeds of different light modes.

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