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How are optical fiber ports classified by transmission mode?

Publish Time: 2024-06-13
Optical fiber ports can be mainly divided into two types according to the transmission mode: multimode optical fiber port and single-mode optical fiber port. The following is a detailed classification introduction:

Multimode optical fiber port:

Definition: Multimode optical fiber port is a fiber interface used to connect multimode optical fiber. Multimode optical fiber is a type of optical fiber that can transmit multiple light modes at the same time. This means that in the same optical fiber, optical signals can propagate along different paths to form multiple modes.

Features: Multimode optical fiber ports usually have a larger core diameter, which makes it easier for optical signals to be transmitted in them. The wavelength of light it transmits is generally around 850nm, which is in the red light band of visible light, and part of the energy belongs to the visible light range. Due to the transmission characteristics of multimode optical fiber, it is often used in scenarios such as short-distance communication and local area networks (LANs), such as connections within enterprises or campus networks.

Application scenarios: Due to their relatively low cost, multimode optical fiber ports are very popular in cost-sensitive applications. They are often used in environments such as data centers, campus networks, and industrial control networks that require high-speed data transmission but relatively short distances.

Single-mode optical fiber port:

Definition: Single-mode optical fiber port is a fiber interface used to connect single-mode optical fiber. Single-mode optical fiber is a type of optical fiber that can only transmit one optical mode, that is, the optical signal can only propagate along a specific path.

Features: The optical fiber core diameter of the single-mode optical fiber port is small, and usually only allows a single optical pulse to pass through. The optical wavelengths it transmits are mainly 1310nm and 1550nm. Both bands belong to the infrared frequency band and are invisible light. Due to the transmission characteristics of single-mode optical fiber, it is usually used in scenarios such as long-distance communication and optical fiber sensing.

Application scenarios: Single-mode optical fiber port has a wide range of applications in telecommunication networks, Internet backbones, and television signal transmission. Due to its high bandwidth and low attenuation characteristics, single-mode optical fiber port can support longer distances and more complex network topologies.

In summary, optical fiber ports are mainly divided into multi-mode optical fiber ports and single-mode optical fiber ports according to transmission mode. There are significant differences between the two in terms of transmission characteristics and application scenarios. Users can choose the appropriate type according to actual needs.
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