Application Research Of Superchannel In High Speed Optical Label Switching System

In recent years,people rely more and more on the Internet,and the rate of fixed network and mobile network is higher and higher.This puts forward new requirements for the efficiency,flexibility and accuracy of network resource allocation by backbone network.Elastic optical network(EON)is a more feasible scheme in recent years.In EON,the super channel is an effective way to converge and adjust traffic.The super channel is composed of a number of dense sub-channels,which converge a large number of data together,so that the spectrum can be used efficiently.On the other hand,in the switch nodes of EON,there is an effective way to receive and release dynamic traffic.So we need to use optical label switching(OLS)technology.So this paper combines the super channel technology with the OLS technology.Taking the optical frequency comb as the source of super channel and optical label.A super channel carrying high speed label OLS simulation system is built.The main contents and results of this paper are as follows:(1)Several methods of optical frequency comb generation are briefly introduced,and the traditional principle of generating optical frequency comb using IM and PM cascade is analyzed.The traditional method is optimized,and the influence of the phase function unloaded on the phase modulator is suppressed by the nonlinear effect of the intensity modulator.Set up the optical frequency comb simulation system.The optimized system can produce an optical frequency comb with a flat degree of 1.2 dB,which contains 83 spectral lines.(2)In order to improve the transmission capacity of the payload,optical frequency comb are applied to generate the super channel with a transmission capacity of 8 Tb/s,and the modulation mode of the super channel is still DQPSK.The super channel simulation system is built,and the performance of the system is analyzed.(3)A large capacity super channel is applied to high-speed optical label switching system,and a super channel optical label switching simulation system is built.A single super channel with 1.56 Gb/s optical label and a total rate of 8 Tb/s has been implemented,and multiple Super channels with label have been studied.(4)We discussed the influence of label on system performance.It is found that the super channel and the label have good performance when the light marking rate is 1.56 Gb/s,the emission power is-8.25 dBm,and the interval between the label and the super channel is greater than 80 GHz.The influence of extinction ratio and transmission distance on the optical label system and the super channel system is analyzed.