Single mode fiber and multi-mode fiber price gap? How to choose? Melong Long
Today’s Internet age, the network is particularly important, and the speed of the network is also very important. Fiber is a device that can effectively improve the speed of the network, then do you know the price of single-mode fiber and multimode fiber? What is the single mode or Multi-mode? This article will introduce you in detail.
Single mode fiber and multimode fiber
Single mode fiber
SingleModefiber: The central glass core is fine (the core diameter is typically 9 or 10 & mu; m), only a mode of fiber can be transmitted. Therefore, its mode is small, suitable for remote communication, but there is also a material dispersion and waveguide dispersion, such a single mode fiber has a high spectral width and stability of the light source, which is narrow, stability. Be good. Later, I found out in 1.31 & mu; M wavelength, the material dispersion and waveguide color of the single-mode fiber were positive, one as a negative, and the size is just equal. In this way, 1.31 & mu; M wavelength zone is an ideal working window of optical fiber communication, is also the main working band 1.31 & mu; M routine single-mode fiber, the main parameters of the ITU-T of the International Telecommunications Union The G652 is determined, so this fiber is also known as G652 fiber.
Multimode fiber
The optical fibers of a variety of modes are transmitted over a given working wavelength. Divided into mutant and gradients according to the distribution of its refractive index. The numerical pore diameter of the ordinary multimode fiber is 0.2 ± 0.02, the core diameter / outer diameter is 50 & Mu; M / 125 & MU; Nu is the transmission parameter is bandwidth and loss. Since the mode of transmission in the multimode fiber is more than hundreds, the propagation constants of each mode is different, so that the bandwidth of the optical fiber is narrow, the dispersion is large, and the loss is also large, only suitable for medium short distance and small capacity fiber optic communication system. .
The difference between single-mode fiber and multi-mode fiber
The following difference: 1. Single mode module generally uses a narrow LED with a narrow LD or spectral line as a light source, and the coupling member size and the single-mode fiber can be used, and the use of a single-mode fiber can transmit a farther distance 2. Multimode module Using low-priced LED as a light source, the coupling part size is good with multimode fiber!
Single mode fiber and multimode fiber
Single mode fiber and multi-mode fiber price gap? How to choose?
From a cost perspective, the single-mode optical cable is low relative to the multimode optical cable, and for optical devices: such as light sources, optical receivers, optical connector, multi-mode classes are much cheaper than single mode. Therefore, there are different side priorities in different applications. For example, in a long-distance trunk system, the amount of fiber optic cable is large, and the transmission performance is high, and a single mode transmission system is used. In the integrated wiring system of the user, such as the integrated wiring system of the building, the amount of optical device is used is large, and the transmission performance of the multimode transmission system can also meet the user needs, so a multimode transmission system is used. Each cable has different materials and structures. The size of the outer diameter is different, so it is simple to say how much the cable is not possible, this problem is not possible to answer.
The above is a detailed introduction to the price of single-mode fibers and multi-mode fibers. Have you learned about the multi-mode mode? Is there interest in buying? Here I recommend Meilong, Merfilong strength is powerful, and it is a good choice.
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