Performace Analysis Of Basic Component For Optical Interconnect

Electronic interconnect is now becoming a bottleneck forcommunication system and computing, as the transmission ratio ofcommunication has been increased dramatically. Optical interconnectholds the promise for future communication and computing by making itpossible that parallel multi-core and network switch architecture in greatlyhigh speed can be achieved with affordable power consumption.The thesis mainly concentrates on optical interconnect and our workis introduced from the view of both system and components. The researchfrom the view of system is the basis of the second part.1. As there is still lack of a thorough research on the application ofintegrated photonics component from the view of network system, it is ofgreat value to have a comprehensive research on the performance ofoptical interconnect component in a network system. To meet the demandsof our project, we investigate the performance of basic optical interconnectcomponent. Then FDTD solution and MODE ANALYSIS are applied tosimulate various kinds of waveguide, micro-ring resonator, micro-diskresonator, and their applications in many fields. The result such as FSR, Qfactor, and FWHM, will be directly applied in our system analysis.2. As the size of integrated photonics become smaller and smaller andhigh index contrast components are widely used nowadays, the surfaceroughness effect of integrated photonics now is becoming the main factorof scattering. So it is needed to look into the surface roughness effect morecomprehensively and thoroughly. Our work includes:1) A method base on wavelet decomposition is proposed to analyzethe surface roughness effect on the Q factor of micro-disk resonator. Thewavelet decomposition is introduced to analysis the surface roughnesseffect for the first time as far as we know. By enabling independentanalysis of micro-disk inhomogeneity and its first deviation’s effect on thequality factor, it can further our understanding on the underlying scatteringmechanism of rough surface. According to the theoretic and simulationresult, it is the first order deviation of surface inhomogeneity that is thedominator factor that leads to scattering loss and degradation of Q factor.The method we proposed will also be benefit for the research of mode splitting.2) A stochastic model of surface inhomogeneity is given and therough surface’s approaching method is deeply discussed. We proved thatthe surface roughness can be modeled as a martingale, and then theapproaching method for surface inhomogeneity is given through ourdiscussion on the limit of random variable. Nowadays, the micro elementmethod, which divides the waveguide into small elements and eachelement is modeled as sinusoid perturbation, is the most important way forthe analysis of surface roughness effect. According to our analysis, themethod would do well if we simply need to look into the surface roughnesseffect on the optic’s quadratic characteristic. But for the surface roughnesseffect on the characteristics measured in L-1space, such as phase shift,which is critical in coherent optical communication, the widely usedmicro-element method will not work.