CAJ | 학술논문

提出了一种应用于光纤载太赫兹通信系统(ToF)中双级级联单边带(DSSB)调制的新方案.该方案首先抑制载波双边带调制产生太赫兹波;然后选择载波抑制双边带中的一个边带进行一级单边带数据调制,在数据调制过程中再次采用基带单边带调制技术,由此产生双级级联单边带调制.另外,为了实现系统的优化,对系统中的一些关键参数进行了调整及性能测试,例如:上下边带的衰减比、复用器的带宽、滤波器的带宽等.最后,在系统性能最佳的状态下进行分析,结果显示:对0.1 THz中频载波、数据速率为5 Gbit/s的光载太赫兹信号进行80 km光纤传输,无色散补偿的误码率(BER)仅为1×10~(-11).数量级、接收机灵敏度为-28.8 dBm.
제출료일충응용우광섬재태혁자통신계통(ToF)중쌍급급련단변대(DSSB)조제적신방안.해방안수선억제재파쌍변대조제산생태혁자파;연후선택재파억제쌍변대중적일개변대진행일급단변대수거조제,재수거조제과정중재차채용기대단변대조제기술,유차산생쌍급급련단변대조제.령외,위료실현계통적우화,대계통중적일사관건삼수진행료조정급성능측시,례여:상하변대적쇠감비、복용기적대관、려파기적대관등.최후,재계통성능최가적상태하진행분석,결과현시:대0.1 THz중빈재파、수거속솔위5 Gbit/s적광재태혁자신호진행80 km광섬전수,무색산보상적오마솔(BER)부위1×10~(-11).수량급、접수궤령민도위-28.8 dBm.
A novel dual-stage optical single sideband (DSSB) modulation scheme for the THz over fiber (ToF) communication system was proposed. In the scheme, THz wave was generated via carrier-suppression double sideband modulation, one sideband of THz wave then underwent the first single sideband modulation and the second baseband SSB modulation was adopted in the process of data modulation, which achieved DSSB modulation. In order to optimize the performance of the system, several key parameters were adjusted and tested, such as the attenuation ratio of two sidebands, the bandwidth of multiplexer, the bandwidth of filters, etc. In the end, under the optimal performance of the system, the analysis result shows for mid-frequency carrier of 0.1 THz, the BER performance without dispersion compensation achieves 10~(-11) and the sensitivity of the receiver is -28.8 dBm with a data rate of 5 Gbit/s after 80 km transmission.