Implementation Of Broadband Optical Receiver Based On Standard SiGe BiCMOS Technology

Optical communication technology is rapidly expanding its application areas into interconnect system in which copper based electrical connectors are being increasingly replaced by optical fibers.Furthermore,the silicon-based optoelectronic technology is leading a trend of next generation optical communication's development,which due to its inexpensive and high integration density.The optical receiver,as a key building block of the optical interconnection system,to become a hotspot for research on the silicon-based optoelectronic direction naturally.Besides the lower noise and better frequency characteristics,the standard SiGe BiCMOS technology also has a high photoelectric property,which make it become the most ideal technology in the broadband silicon-based optical receiver design.Many scholars at home and abroad have done some research on the optical receiver which based on standard SiGe BiCMOS technology,however,their test results are still have a certain distance from commercial standard.In order to achieve the broadband optical receiver system based on standard SiGe BiCMOS technology,this paper has carried out the following research works:1,Based on IBM 7WL standard 0.18?m SiGe Bi CMOS technology to carry on the modeling of the DPD,PIN and HPT photodetectors,analyzes the factors that influence on the responsibility and the bandwidth of the photodetectors,then implementation them through tape-out.Under the condition of 850 nm wavelength,their responsibility can reach 0.007 A/W,0.01 A/W and 0.4 A/W respectively.Among them,the performance of the HPT is up to the commercial standard.Meanwhile,this paper proposes a fully differential photodetector based on PIN structure,which make the single fiber output signal can be converted into a pair of fully differential current signal.2,Based on standard 0.18 ?m CMOS device,a broadband transimpedance amplifier with cascode feedback RGC input stage,?-type peaking network and novel miller capacitance compensation technology have been designed.Test results show that the amplifier can achieves 57 dB? transimpedance gain,8.2 GHz bandwidth and 22 mW power consumption.Based on SiGe HBT device(fT = 60 GHz),this paper designed a broadband transimpedance amplifier with RGC input stage with novel capacitance degeneration and ?-type peaking network have been designed.Test result shows that the amplifier can achieves 61 d B? transimpedance gain,15 GHz bandwidth and 32 mW power consumption.3,Based on standard 0.18 ?m CMOS device,an inversely scaled of limiting amplifier has been designed with 30 dB gain and 5.9 GHz bandwidth.Meanwhile,a limiting amplifier with third-order interleaving active feedback has been designed with 44 dB gain,9.3 GHz bandwidth.Based on standard SiGe HBT device,a Cherry Hooper limiting amplifier with capacitance degeneration has been designed with 46.4 dB gain,20.5 GHz bandwidth.Furthermore,this paper has designed a f T doublers buffer with 3.7 dB gain and 17 GHz bandwidth.4,Based on standard 0.18 ?m CMOS technology,a fully-differential broadband optical receiver has been designed with 92.5 dB? transimpedance gain,8.9 GHz bandwidth and 10 Gb/s bitrates,Based on standard 0.18 ?m SiGe BiCMOS technology,a fully-differential optical receiver has been designed with 107 transimpedance dB? gain,17 GHz bandwidth and 20 Gb/s bitrates.