Most people may think that the higher the power of the optical signal, the better, and we often use optical amplifiers to increase the power of the optical signal, so the connection between fixed engineering carrier-grade optical fiber attenuators and tunable optical fiber attenuators is a question for many people, why What about reducing the power of an optical signal with a fiber attenuator?
Engineering Carrier Grade Optical Fiber Attenuator
How Fiber Attenuators Work
The attenuation of optical signals can be achieved by means of light absorption, light reflection, light diffusion, light scattering, light deflection, light diffraction, light dispersion, etc., while optical fiber attenuators generally attenuate optical signals through light absorption. The principle of excess light energy is similar. Optical fiber attenuators generally do not use the principles of light reflection and light scattering to attenuate optical signals, because light reflection will cause echo reflections, and light scattering will form air gaps.
Types of Engineering Carrier-Grade Optical Fiber Attenuators
There are many kinds of optical fiber attenuators, classified according to the way of use, optical fiber attenuators can be divided into fixed and variable, mechanically adjustable optical fiber attenuators and single-channel optical fiber attenuators.
Fixed Fiber Attenuator
The attenuation power of a fixed optical fiber attenuator is fixed (such as 1 dB, 5 dB, 10 dB, etc.), for example, the attenuation power of a -3 dB optical fiber attenuator is 3 dB. Such fiber optic attenuators are commonly used in telecommunication networks, fiber optic test equipment, local area network (LAN) and cable television (CATV) systems.
Fixed fiber attenuators can be divided into in-line and connector types. The shape of the in-line fiber optic attenuator is similar to that of an ordinary fiber optic patch cord, and it is also a fiber optic cable terminated with different types of optical connectors at both ends.
The shape of the connector-type optical fiber attenuator is similar to that of the optical connector. The difference is that the two ends of the connector-type optical fiber attenuator are a male connector interface and a female connector interface. This fiber attenuator either utilizes air gaps to achieve attenuation, or attenuates fibers by doped metal ions to achieve attenuation. Connectorized fiber optic attenuators can be directly connected to the connectors of the corresponding interfaces (such as FC, ST, SC and LC). In addition to the function of attenuating optical signal power, the female-to-female fiber optic attenuator is like an ordinary adapter, while the male-female fiber optic attenuator is like an optical connector.
Tunable Fiber Attenuator
The attenuation power of the adjustable optical fiber attenuator is not static, but changes with the change of conditions. Tunable optical fiber attenuators are generally used for accurate testing and measurement of optical fibers, and are also widely used in erbium-doped fiber amplifiers. Its function is to equalize the optical signal power in different channels.
Application Scenarios of Engineering Carrier-Grade Optical Fiber Attenuators
Through today's introduction, I believe that everyone has an understanding of the connection between fixed and adjustable in engineering carrier-grade optical fiber attenuators. If you want to know more about ZR optical fiber series products, welcome customers to come to consult.
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