Frequency conversion technology in the optical frequency domain has broadband proces-sing capabilities,and the optical frequency conversion module can effectively process signals with a wide frequency range,which facilitates large-capacity and high-speed data transmission at the back end.This paper proposes an electro-optical hybrid frequency conversion channelization module that combines RF filter group channelization and optical down conversion,which realizes 4-route chan-nelization down conversion to 0.5～4.5 GHz IF signals under a large bandwidth of 6～19 GHz,and has good IF channel out-of-band suppression capabilities.The module is simulated and verified based on the Opti-system and Matlab software,and the output gain and out-of-band suppression of the actual module are tested.The gains of its four channels are all more than-40 dB,and the IF out-of-band suppression is less than 60 dBc.The technical solution effectively solves the difficulty of out-of-band suppression in the optical down conversion solution for broadband signals.
关键词
光信道化/下变频/宽带信号
Key words
optical channelization/down conversion/broadband signal
维普
万方数据