The Study On Optical Modulation Of Graphene Based D Type Fiber

As humans gradually into the light of the information age, light regulatory capacity requirements are high, and light regulation depends on the effect of various optical devices to achieve,their different structures can achieve different light regulatory capacity. Accordingly, the preparation of new light device is the current research focus. Graphene as a novel two-dimensional material with unique optical and electrical properties, which is widely used to study the optical device. However, graphene is used for optical device, which determines the performance of the transfer of technology of optical devices for their preparation. Therefore, to enhance and improve graphene transfer technology and explore its performance is significant.In this thesis, we make the single layer graphene by chemical vapor deposition(CVD)method, and transfer it to the D-type fibers and comprise a new type of light-control device. Then, we study the properties of the new device.Firstly, this thesis introduces some common preparation methods of graphene, and we make the high quality single layer grown on copper by the improved CVD method. Secondly, we introduce the current transport methods of graphene simply,and we improve the transport method using the PMMA as a intermedium by adding annealing process, which can reduce the folds and detect. We measure the temperature-dependent performance of the light-control device, and give the transmitted optical power between 18? and 70?. We find that the transmitted optical power changes with the temperature increasing.In the range of 18 ? to 46 ?, the figure shows a certain linear relationship between the transmitted optical power and temperature. We can make a temperature sensor based graphene after improvement. At last, we get the mode-locked pulses successfully by the mode-locked experiment.