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本文提出了一种基于波长间插复用的载波抑制双边带(ODSB-SC)新型射频光纤传输(ROF)系统,该系统采用马赫曾德尔调制器(MZM)实现了ODSB-SC调制信号,通过两个马赫曾德尔干涉仪(MZI)的级联实现了三路光射频(RF)信号的解复用。理论分析了系统的工作原理,采用光子模拟软件设计出了一个10GHz、15GHz和25GHz的三路射频(RF)信号经过波长间插复用的ODSB-SC的ROF系统,给出了三路RF信号复用及解复用前后的频谱图、Q值及眼图,讨论了MZI的延时时间对解复用出来的RF复用信号性能的影响,得出了两个MZI的最佳延时时间τ1、τ2分别为0.1ns、0.06ns的结论。
In this paper, we propose a novel Orthogonal Frequency Division Multiplexing (RFDSF) system based on wavelength interleaved multiplexing (ODSB-SC). This system implements ODSB-SC modulated signal by using Mach-Zehnder modulator (MZM) The cascade of two Mach-Zehnder interferometers (MZIs) enables the demultiplexing of three optical radio frequency (RF) signals. The working principle of the system is analyzed theoretically. A 10 GHz, 15 GHz and 25 GHz three-way radio frequency (RF) signal with ODSB-SC ROF system with wavelength interleaved and multiplexed is designed by photon simulation software. Three RF signals The spectrum, Q value and eye diagram before and after the multiplexing and demultiplexing are used to discuss the influence of the delay time of MZI on the performance of the demultiplexed RF multiplexed signal, and the optimal delay time of two MZIs is obtained τ1, τ2 were 0.1ns, 0.06ns conclusions.