Optical Solution Sharing

Nowadays, high capacity network is needed to deal with large amount of data transfer. The application of DWDM (dense wavelength division multiplexing) system is a commonly used technique to enhance network capacity. Due to its complexity caused by various components like EDFA and dispersion compensating module (DCM), it may be difficult to calculate the loss over the whole links, especially in long haul transmissions. Then, how to calculate the budget loss of a DWDM system in long haul transmission? This post will illustrate the method to solve this problem. Causes of Loss in Long Haul DWDM System Loss budget is always one of the crucial problems that need to be considered before deploying a network. Any components in optical links will introduce loss. For example, when add a DWDM mux to a DWDM network, it will cause insertion loss which is the total optical power loss (often measured by dB) caused by the insertion of an optical component. In long haul DWDM system, there are sev...

With growing data traffic volume in recent years, the existing 10Gb/s optical networks are becoming saturated, which drive the great need for 40G and 100G networks. In turn, 100G network also can bring benefits for network operators. For example, 100G network can reduce the cost per bit, improve the utilization of existing fiber and reduce the network delay. This post intends to explore the options to get 100G connection. 100G Connectivity Challenges As we all know, existing 10G network use two fibers in either a SC duplex or a LC duplex connector to realize data transmission. But different from this transmit type, data in 100G network often get multiplexed and transferred over the 4 or 10 parallel wavelengths on a single fiber, which means the lanes of the two kinds of networks are a little different. This is one problem that should be considered when deploy 100G connections. Except for that, the cost is another problem needed to be resolved. No matter the 40G or 100G, both...