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Do you know the difference between optical modules and optical transceivers?

(Summary description)Although both optical modules and optical transceivers are used for photoelectric conversion, do you know the difference between them? How to choose? This article will explain in detail the difference between the two and the precautions when connecting. I hope you will gain something after reading it.

Do you know the difference between optical modules and optical transceivers?

(Summary description)Although both optical modules and optical transceivers are used for photoelectric conversion, do you know the difference between them? How to choose? This article will explain in detail the difference between the two and the precautions when connecting. I hope you will gain something after reading it.

Although both optical modules and optical transceivers are used for photoelectric conversion, do you know the difference between them? How to choose? This article will explain in detail the difference between the two and the precautions when connecting. I hope you will gain something after reading it.

The concept of optical modules and optical transceivers
Before understanding the difference between optical modules and optical transceivers, let us first take a look at what they are and what they do.

What is an optical module?
As an optical device that completes photoelectric conversion and electro-optical conversion, the optical module is composed of optoelectronic devices, functional circuits, and optical interfaces. It is a carrier for signal transmission between the switch and other equipment.

What is a fiber optic transceiver?
Fiber optic transceivers are photoelectric conversion devices that convert short-distance electrical signals and long-distance optical signals, and are also called photoelectric converters. It is generally used in long-distance transmission that cannot be covered by a network cable to achieve the purpose of extending the signal transmission distance.

The difference between optical module and optical transceiver
It can be seen from the above that both optical modules and optical transceivers are devices that convert electrical signals and optical signals. Although their functions are similar, there are still some differences. As shown below, they have the following differences:

Active and passive
The optical module is equivalent to an optoelectronic device or accessory. It is a passive device that cannot be used alone. It can only be used when it is plugged into a switch and a device with an optical module slot; while an optical fiber transceiver is an active device that can be used alone, plugged in The power supply is ready to use.

application
Optical modules are mainly used in network communication equipment, such as the optical interface of convergence switches, core routers and other equipment; optical fiber transceivers are mainly used in long-distance networks that cannot be covered by network cables and need to use optical fibers to extend signal transmission. They are often used for optical fiber access. Households, security monitoring, community network construction, radio and television broadcasting and other fields.

Configuration
The optical module supports hot-swappable, and the configuration is relatively flexible; while the optical fiber transceiver is relatively fixed, and it is troublesome to replace and upgrade.

Can the optical module be connected to the optical transceiver? What are the precautions?
The optical module can be connected with the optical transceiver, but the following precautions should be observed when connecting:

The transmission rate and interface type of the optical module and the optical transceiver must be the same, for example, a gigabit optical module is connected to a gigabit optical transceiver.

The wavelength and transmission distance of the optical module used on the optical fiber transceiver should be consistent with the wavelength and transmission distance of the optical module on the other end device (such as a switch).

The fiber type of the optical module used on the fiber optic transceiver must be the same as the fiber type of the optical module on the other end device (such as a switch), for example, single mode corresponds to single mode, and dual mode corresponds to dual mode.

Summarize
Through the above introduction, I believe you should clearly understand the difference between optical modules and optical transceivers, and the choice of optical modules and optical transceivers needs to be determined according to the actual application. Devices such as optical port switches need to realize the network Optical modules are used for transmission, while optical transceivers are only used when the transmission distance of electrical signals needs to be extended. In other words, optical modules are necessary for optical fiber transmission, but optical transceivers are not.

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