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光纤传输原理简单了解,HDMI光纤所带来时代变化

date:On October 24, 2017 Source:  

   知道HDMI光纤,你可能不知道光纤是如何传输的,在了解光纤传输的时候,回想当年的HDMI线的问题,又是铜线之说了,首先看看铜线传输的发展如何,在看HDMI光纤的传输原理所比较。

Know HDMI fiber, you may not know how to transfer fiber, optical fiber in the understanding of the time, recall the year of the HDMI cable problem, but also the copper said, first look at how the development of copper transmission, watching HDMI Fiber transmission principle comparison.

HDMI光纤

   铜线传输-Copper wire transmission


   铜线传输包括对绞铜线传输、同轴电缆传输、线对增容技术传输、高速率数字带用户线传输等。高速率数字用户线(HighbitrateDigitalSubscriberLine,HDSL)接入网在2对以上的对绞铜线上传送全双工2.048kbit/s信息,利用这类系统可以在原有铜线上扩容,传送宽带信息。线对增容技术可以在一对铜线上开通2路、4路或8路电话信号,为了进一步增加铜线的传输速率,以达到可以开通一个基群E1(2,048kbit/s)的传输速率的双工结构,HDSL技术提高传输速率、延长传输距离的关键是:采用了2对或3对铜线,以降低线路上传输的等效频率(采用2对铜线时,每对铜线上传输的速率可降为1168kbit/s;采用3对铜线时,每对钢线上传输的速率可降为748kbit/s);采用了2B1Q或CAP先进传输码型,又可使线路传输码率降低到50%或25%;采用回波抵消器以消除线路上阻抗不匹配引起的回声,以便适用与多种线径混连或有桥接、抽头等线路;采用自适应高速数字信号处理技术,来均衡整个频段上的线路损耗,以减除近端串音、脉冲噪音和电源噪声对信号的干扰。

Copper wire transmission, including twisted copper wire transmission, coaxial cable transmission, line to capacity technology transmission, high-speed digital transmission with the user line. The high-bit digital subscriber line (HDB) access network transmits full-duplex 2.048 kbit / s information over two pairs of twisted copper wires, which can be used to expand and transmit broadband information on existing copper wires. Line-up capacity technology can be opened on a pair of copper 2, 4 or 8 telephone signals, in order to further increase the copper transmission rate, in order to achieve a base group E1 (2,048 kbit / s) transmission rate The duplex structure, HDSL technology to improve the transmission rate, the key to extend the transmission distance is: the use of two pairs or three pairs of copper, to reduce the transmission line on the equivalent frequency (using 2 pairs of copper, each pair of copper The transmission rate can be reduced to 1168kbit / s; using 3 pairs of copper, the transmission rate of each pair of steel can be reduced to 748kbit / s); using 2B1Q or CAP advanced transmission code, but also the line transmission rate Reduced to 50% or 25%; the use of echo canceller to eliminate the impedance on the line does not match the echo, in order to apply with a variety of wire diameter mixed or bridge, tap and other lines; the use of adaptive high-speed digital signal processing technology, To balance the line loss over the entire frequency band to reduce the interference of the near-end crosstalk, impulse noise, and power supply noise to the signal.


   光纤传输原理-Principle of optical fiber transmission


   光在光纤中进行传输是基于全反射的原理,当光线垂直于光纤截面射入时并与光纤轴心线重合时,光线沿轴心线向前传播;当光线与光纤轴心线呈某一角度射入时,光线在纤芯与包层的交界面处不断发生全反射,如此逐渐向前传输。因此也要求纤芯的折射率一定要大于包层的折射率,以便满足全反射发生的要求。

The light is transmitted in the fiber is based on the principle of total reflection, when the light perpendicular to the optical fiber cross-section and coincides with the fiber axis line, the light along the axis line forward; when the light and fiber axis is a Angle injection, the light in the core and cladding interface at the interface of the total reflection, so gradually forward transmission. It is also desirable that the refractive index of the core be greater than the refractive index of the cladding in order to meet the requirements of total reflection.


   HDMI光纤给现时代的发展,促进了人们的生活水平的提高,发明不仅仅是对社会的回赠还是对生活的贡献。了解HDMI光纤就从生活中开始。

HDMI fiber to the development of the times, to promote people's living standards, the invention is not just a rebate for the community or the contribution of life. Understanding HDMI fiber from the beginning of life.


   想了解更多相关信息请登陆利诺威网站:http://www.hdmiaoc.com/

For more information, please visit the Lenewei website: http://www.hdmiaoc.com/

   联系电话:+86755-23224889

Tel: + 86755-23224889

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Address: Bao'an District, Shenzhen City, Guangdong Province, Shajing Town Center Road Jincheng Building 7H

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