Introduction to the Function and Classification of Optical Fiber Amplifiers

Fiber amplifiers typically consist of a gain medium, pump light, and output lotus root. Optical fiber amplifiers do not need to undergo complex processes such as photoelectric conversion, electro-optical conversion, and signal regeneration. They can directly amplify signals in all light, and have good "light transmittance". They are particularly suitable for relay amplification in remote optical communications. To help you gain a comprehensive understanding, this article will summarize the efficacy and classification knowledge of fiber amplifiers. If you are interested in the content that will be covered in this article, please continue reading.

Operating principle of optical fiber amplifier

The fiber amplifier technology is to mix rare elements that can generate laser light into the fiber core, and encourage amplification of the passing optical signal based on the DC light provided by the laser. The traditional optical fiber transmission system selects photoelectric optical regenerative repeaters, which affects the stability and reliability of the system. To eliminate the above conversion process and directly amplify signal transmission on the optical path, all-optical transmission repeaters should be used instead of such regenerative repeaters.

Classification of optical fiber amplifiers

Optical fiber amplifier is a new type of all optical amplifier used for optical fiber communication lines and signal amplification. There are three main types of fiber optic amplifiers. Let's take a look.

(1) Semiconductor Optical Amplifier (SOA);

(2) Optical fiber amplifiers mixed with rare elements (EDFA), Tm, cultured Pr, nickel Nd, etc.) are typically mixed with optical fiber amplifiers (EDFA), mixed with optical fiber amplifiers (TDFA), and mixed with optical fiber amplifiers (PDFA);

(3) The nonlinear fiber amplifier is a fiber Raman amplifier (FRA).

EDFA (Inclusion)

Quartz fiber and rare elements (such as Nd), Er, Pr, TM, etc After mixing, a multi-energy laser system can be formed. Under the influence of pump light, the input signal light can be directly amplified to provide appropriate feedback, forming an optical fiber laser. Hybrid Nd fiber amplifiers have operating wavelengths of 1060 nm and 1330 nm, and their development and application are limited by the excellent performance of offset fiber communication. Its working wavelength is the lowest consumption (1550 nm) and zero scattering wavelength (1300 nm) window for optical fiber communication. TDFA operates in the S-band and is particularly suitable for applications in optical fiber communication systems. In particular, EDFA is the fastest growing and convenient to use.

Efficiency of fiber optic amplifiers

Optical fiber amplifiers are widely used in the market, usually in the communication industry. Fiber optic amplifiers amplify the power of input signals, enabling multi-channel applications. This type of device is used in the television and broadcast systems that we often use. Fiber optic amplifiers are key components that may be missing in communication systems, and their role is self-evident.

Currently, this product is mainly divided based on the width of the market and selected based on needs to purchase the appropriate product. Narrow band high-frequency power amplifiers are commonly used as derivation circuits, while broadband high-frequency power amplifiers are used for pairing circuits or transformers. The two methods of use are different and slightly different.

However, the overall operating mode of optical fiber amplifiers is the same, and they are widely used in various fields. This product is applied to work and equipment related to signal transmission. It is recommended to choose a brand with high cost performance. After all, exceptions can affect the operation of the entire device. High quality products have high durability and cost performance.

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