Introduction of Optical Communication and Internet Technology

Fibermart
Wednesday 05 November, 2014
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Fiber optical communication is a method of transmitting information from one place to another by sending pulses of light through an optical fiber. Because of its advantages over electrical transmission, optical fibers have largely replaced copper cable communications in core networks in the developed world. Now Fiber optical communication systems have revolutionized the telecommunications industry and have played a major role in the advent of the Information Age. This article may introduce some optical communication technologies to you.

Technology of Terabit Optic Circuit Packet Integrated Switching System

New exchange system and integrated optic circuit packet layers will be provided to meet the large capacity, high quality, low cost and effective demand so as to adapt to the cable wireless traffic spikes in the service in the future.

A connection-oriented packet transport technology is considered to be an effective way to improve the performance of packet data transmission. It is necessary, can put a layer of transport network in the direction of capital spending and minimizing operating costs to overcome the network provider's storage and traffic increase of income. And unified control mechanism is applied to the network resource allocation, flexible wavelength circuit and packet layer according to the service characteristics. The key technologies of the system are as followings.

Connection-oriented Packet TransportOptic-Circuit-Packet Integrated SwitchOptic-Circuit-Packet Layer Integrated Control/Management

Technology of Terabit Optic Circuit Packet Integrated Switching System

Smart IDC Network Control Technology for Cloud Service

Along with the rapid spreads and changes of cloud services and the technologic growth of the components in the IDC, the IDC networks are demanding following changes.

Cloud optimized: The virtualization rate of the server is rising up to 10:1-100:1 and storage virtualization is also possible recently. So IDC is requiring the cloud-optimized virtualization to the network side which are connecting the virtualized cloud resources.

Flattened: There are network control needs to reduce the delay latency of virtualized server-to-server communications which is occuping up to 70%, to rise the utilization rate the link resources of L2 IDC networks of Tree-shape multi-layer hierarchical architecture with STP.

Auto-Managed: There are demands of integrated management of network and cloud resources between IDC and create/delete/VM migration to ensure seamless services in the cloud.

Therefore, our research target to develop the Smart IDC network system to solve the current problems of IDC network with the 3 IDC network control technologies of the Cloud-Optimized Virtual Network Control technology, the Flattened IDC Network Control Technology and Auto-managed IDC network control technology.

High Speed Optical Transmission Technology

The rapid progress in optical transmission technology has been supporting the ever increasing transmission traffic. In particular, the WDM technology, it is by the end of last century, played a main role. However, the new technology needs to use data traffic exponentially. A solution is 100Gb/s transmission. IEEE announced 40G/100G Ethernet standard and ITU-T has completed ONT standard to accommodate 100G signals in DWDM backbone network. Recently, the 100Gb/s transmission technology has become the commercial deployment, in addition to the existing 10Gb/s and 40Gb/s. Already technologies beyond 100G or 400G are started being discussed. With a long-term perspective, it is a disruptive technology, SDM (space division multiplexing) technology is seriously explored to harness the traffic in economic and energy efficient way.

High Speed Optical Transmission Technology

Next Generation WDM-PON Technology

The WDM-PON is promising technology to provide broadband access offering optic-wireless converged next generation multi-application service with the highest quality.There are many advantages of the WDM-PON:

Using multiple wavelength on a single fiber, each of which carries a transmission bandwidth up to 10Gb/s at maximum; Therefore, the WDM-PON can reduce the optical access infrastructure;Suitable for long-reach application and possible to achieve OPEX reduction;Provide co-existence with legacy TDM-PON (EPON, and GPON) systems and pay as you grow upgradability;Unique advantages of so-called protocol transparency, which means that it requires no specific transmission protocol, and the physical layer security, in addition to scalability in the increase of the bandwidth and guarantee of the quality of service based on bandwidth abundance.

Conclusion

The optical fiber communication has been the main carrier of modern communications network. With the development of society, more and more information are required, and this will greatly promote the development and progress of optical fiber communication technologies in the future.