Kaidexing

Tel：400-110-9708

Fax：86(010)-82719489-806

Mail：kdx@cnkdx.com , cnkdx@126.com

Web：http://www.cnkdx.com

Add：1221/1245, Building A, Building 1, Jiayuan East District, Qinghe, Haidian District, Beijing

I. Preface:

Fiber-optic cable network throughout the building are generally not possible in one step, with the number of users increase, the total hope that in the original network node based on the fiber to continue to allow an extension of a few kilometers from further afield. The usual solution to the original node greater optical power distribution; or to save to invest directly in the original node for passive distribution, this time to receive the two-node optical power will be very low, the general optical receiver can not ideal system indicators.

How in the existing networks, not to change or intensify the original optical power distribution and its network structure, how to make the new node of the indicators do not decline.Beijing Kai Dexing using the company's ultra-low power receiver, can effectively address this issue.

Them to adopt international GaAsHBT advanced integrated circuit technology, so optical receiver has a very low noise between the power.Receiver optical power in the same conditions, CNR than ordinary optical receiver to raise more than 5.0dB at least, in the receiving optical power Tatsu-6dB, the system's CNR CNR remained at more than 50dB, thus saving to send optical power.Especially in the receiver optical power lower, the effect is more significant.

The use of ultra-low power receiver technology, can be relatively small investment to extend the length of optical transmission, as well as large-scale structure of the fiber-optic network to find a new approach.On the one hand, to send optical power saving, saving investment, on the other hand, the maintenance of the existing network infrastructure.

二、 Second, ultra-low power receiver working principle:

1, optical receiver system used under the CNR computing:

For the receiver thermal noise power is proportional to the receiver amplifier noise figure.

For photovoltaic power-for-shot noise, proportional to receive optical power.

Relative intensity noise for laser power.

Input optical power.

2, when the received power for -3 ~-2dBm when, Nth and NRIN on the impact of carrier to noise ratio is relatively small, can be ignored, play a major role in the noise Nsh.

3, when the input optical power reduction, Nsh with optical power is directly proportional to become smaller, Nsh and NRIN of carrier-to-noise ratio is very small, while the Nth has become can not be neglected. At low optical power to receive under the conditions play a major role in the noise of optical receiver thermal noise power Nth.

4, they use the most advanced international GaAs HBT integrated circuit technology, its noise figure at 1.5dB in the right (bandwidth 5-750 MHz), than other CATV module enlarge low noise figure 4-5dB.When the received power is low, the receiver thermal noise power Nth corresponding noise than ordinary enlarge the small number of modules will not be there to cover up for the signal, thus greatly improving the sensitivity of the receiver.

Dual optical port fiber optic transceivers (six)

Operation Management Software

Intelligent Traffic Management Software

We conduct quality inspections on raw materials to ensure the reliability and stability of the mechanical product manufacturing process.

High-strength, high-precision "wire cutting machine" creates the perfect workpiece shape!

The best choice for automated production, "Robot Machining Center" helps you realize intelligent manufacturing!

Beijing KDX Electronic Information Technology Co., Ltd., is located in Beijing's Haidian High-tech Development Zone, Company comprehensive modern new energy technology and optical fiber communication technology, is committed to in optical transmission system and image coding device and an operation and maintenance system technology and equipment research and production...

Tel：400-110-9708

Fax：86(010)-82719489-806

Website：http://www.cnkdx.com

Mail：kdx@cnkdx.com , cnkdx@126.com

Add：1221/1245, Building A, Building 1, Jiayuan East District, Qinghe, Haidian District, Beijing