The Research On Optical Interconnection Networks Technologies In HPC

With the ever boosting need for processing speed and bandwidth of high performance computer system, the traditional electrical network took on the drawbacks in some aspects such as delay, crosstalk and power, which have become the bottleneck of the intra-network of HPC. Compared with electrical interconnect, the brand new optical interconnect technology has great advantages, such as high bandwidth, excellent anti-jamming ability and high interconnect density and low power consumption, therefore it is potential to solve the problems above. Optical interconnect technology is vital and surely a trend in the field of HPC interconnect technology.Aimed at improving the performance of intra-network system of HPC, based on the analysis of the ever-developing optical interconnect technologies, photoelectron technologies and WDM technologies, not only did we have a further research on the architecture of optical interconnection network, optical backplane technologies use in HPC, but developed the key optical accessories of optical interconnect systems almost contain all the aspects of optical interconnect technologies.Firstly the thesis introduces the history of optical interconnect technologies, summarizes optical backplane technologies, then the requirement and key technologies trends of the optical interconnection network is put forward. Based on the research above, a hierarchical, dynamically reconfigurable optical interconnection network of HPC is put forward. The optical network supports communication between processors and remote file access with combining WDM optical network mode, supports the optical backplane-based all optical interconnect communication using a hybrid media access control protocol based on reservation and pre-allocation, and also can dynamically arrange the bandwidth allocation according to the current load situation.Optical backplane is the platform to realize optical interconnect architecture. The thesis also proposes a novel optical backplane technology with combining WDM and fiber optical interconnect technologies. This technology can not only support local communication between processing elements as well as collective communication, but possesses great flexibility and scalability to satisfy with different link rate and different system scale.Optical accessories determine the realization ability, cost and performance of optical interconnect plan. The thesis also researches the optical splitter which is the key accessory of the optical interconnect system. Based on the analysis of different optical splitter technologies, we chose the MMI splitter to research and analyzed different parameters affecting the performance of the splitter. We got the relationship of the splitter performance and the key parameters such as multimode waveguide length, cladding refractive index, etc. Finally, we designed and realized a high bandwidth, high scalability single wavelength hybrid opto-electronics backplane system.