Advantages and Technologies of All Optical Network
In the existing communication networks based on optical multiplexing, the completion of optical/electrical/optical conversion of each node in the network is still exchanged at the speed of electrical signals processing information. In order to meet the requirements of high speed and large capacity, the electronic components have some disadvantages such as bandwidth limitation, clock offset, serious crosstalk and high power consumption, which brought forth “electronic bottleneck” in communication network. In order to solve this problem, the concept of all-optical network (AON) was put forward. With its good transparency, wavelength routing characteristics, compatibility and scalability, all-optical network has become the first choice of the next generation of high-speed broadband networks.
What is All Optical Network
The all-optical network refers to the whole process of data transmission and exchange from the source node to the end user node are all conducted in the optical domain, that is, end-to-end complete optical path, without the intervention of electrical signals. `
Advantages of All Optical Network
The all-optical communication network based on WDM can enable the communication network to have stronger manageability, flexibility and transparency. It has the following advantages over the previous communication network and the current optical communication system.
1. It reduces the use of electronic devices. The flow of optical signal in all-optical network no longer meets the obstacle of photoelectric conversion, which overcomes the difficulty of improving the signal rate of electronic devices on the way, saves a large number of electronic devices, and greatly improves the transmission rate.
2. It supports multiple protocols. All optical network adopts wavelength division multiplexing technology and selects routing by wavelength, which can provide services of multiple protocols conveniently.
3. It provides high networking flexibility. The all-optical network is very flexible, and a certain wavelength can be extracted or added at any nod
4. It is of high reliability. There is no transformation and storage along the way, and many optical devices in the all-optical network are passive, so it is highly reliable.
