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Fiber Optic Attenuator is a passive device used in optical communication systems to reduce the power level of an optical signal without significantly distorting its waveform. It ensures optimal signal strength by preventing overloading of receivers, which can cause errors or damage in high-power scenarios.

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Ningbo Goshining Communication Technology Co., Ltd. is an enterprise that designs, produces, and sells a full range of fiber optic products with high-quality and first-class services, which enable us to meet all customers' demands and offer one-stop service. Ningbo Goshining Communication Technology Co., Ltd is a professional Custom Fiber Optic Attenuator Supplier and OEM Fiber Optic Attenuator Company, our products include Fiber Optic Fast Connector, Patch Cord, PLC Splitter, Cables, Distribution Box, Splice Closure, and Terminal Box etc. We also offer Customization services to help develop your own brand.

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Fiber Optic Attenuator Industry knowledge

As a specially designed optical passive device, the optical fiber attenuator plays an irreplaceable role in regulating optical power and optimizing system performance. Whether it is a long-distance trunk network or a data center interconnection, the optical fiber attenuator silently guards the stable transmission of optical signals and prevents communication failures caused by excessive or low power.

Working principle of optical fiber attenuator
Absorption attenuation technology: Attenuation is achieved by using materials that selectively absorb light waves of a specific wavelength. The required attenuation can be obtained by precisely controlling the thickness or area of the absorbing material. The advantage of this technology is that the attenuation stability is high and the wavelength correlation is small. The thickness control accuracy of the metal film prepared by the ion sputtering process can reach ±2nm, which can achieve precise control of the attenuation value.

Reflection attenuation technology: A dielectric film with a certain reflectivity is introduced into the optical path, so that part of the optical signal is reflected instead of transmitted. The desired attenuation effect can be achieved by precisely controlling the reflectivity through the film system design. The advantage of this type of attenuator is that it is low in sensitivity to wavelength and is suitable for broadband optical network applications.

Gap attenuation technology: Using the Fresnel reflection principle, a precisely controlled tiny air gap is introduced between the two optical fiber end faces. There is a definite relationship between the gap size and the attenuation. By adjusting the gap distance with precision machinery, an attenuation range of 0-15dB can be achieved. This structure is simple and reliable, with low cost, and is often used in economical application scenarios.

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