The answer is a. evanescent field.

Here's why:

In fiber optics, when light is guided through the core of the fiber, a small amount of the light also penetrates into the cladding. This is known as an evanescent field. The evanescent field is an electromagnetic field that extends into the cladding, but it decays exponentially with distance from the core-cladding interface. This phenomenon is crucial for the functioning of fiber optics, as it allows the light to be guided along the fiber.

The electric field (b) and magnetic field (c) are components of the electromagnetic field, but they do not specifically refer to the field that extends into the cladding.

A propagating field (d) refers to an electromagnetic field that is moving or spreading out, which is not specific to the field extending into the cladding.

Question

The answer is a. evanescent field.

Here's why:

In fiber optics, when light is guided through the core of the fiber, a small amount of the light also penetrates into the cladding. This is known as an evanescent field. The evanescent field is an electromagnetic field that extends into the cladding, but it decays exponentially with distance from the core-cladding interface. This phenomenon is crucial for the functioning of fiber optics, as it allows the light to be guided along the fiber.

The electric field (b) and magnetic field (c) are components of the electromagnetic field, but they do not specifically refer to the field that extends into the cladding.

A propagating field (d) refers to an electromagnetic field that is moving or spreading out, which is not specific to the field extending into the cladding.

Knowee AI · Accepted Answer

The answer is a. evanescent field.

Here's why:

In fiber optics, when light is guided through the core of the fiber, a small amount of the light also penetrates into the cladding. This is known as an evanescent field. The evanescent field is an electromagnetic field that extends into the cladding, but it decays exponentially with distance from the core-cladding interface. This phenomenon is crucial for the functioning of fiber optics, as it allows the light to be guided along the fiber.

The electric field (b) and magnetic field (c) are components of the electromagnetic field, but they do not specifically refer to the field that extends into the cladding.

A propagating field (d) refers to an electromagnetic field that is moving or spreading out, which is not specific to the field extending into the cladding.

an electromagnetic field extends into the claddingSelect one:a. evanescent fieldb. electric fieldc. magnetic fieldd. propagating field

Question

An electromagnetic field extends into the cladding

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