多通道射频光传输模块增益波动及带内杂散解决方法  

Solution of gain fluctuation and in band spurious in multichannel radio frequency optical transmission module

作　　者：贾帅阳 苟源 康仪 赵艳 饶菁 JIA Shuaiyang;GOU Yuan;KANG Yi;ZHAO Yan;RAO Jing(The 29th Research Institute of CETC,Chengdu 610036)

机构地区：[1]中国电子科技集团公司第二十九研究所,成都610036

出　　处：《光通信技术》2022年第3期93-97,共5页Optical Communication Technology

摘　　要：针对基于波分复用技术的多通道射频光传输模块的通道间隔较小时,因四波混频效应产生的带宽内杂散信号和高低温下波长漂移导致通道增益波动大的问题,基于四波混频原理和光发射机波长调谐原理,设计了多通道射频光传输模块增益波动和带内杂散解决方案,采用波长组合的优化算法计算出满足要求的一组波长值,通过温度调谐光发射机波长,并使用一种基于调谐波长的调试系统进行了实验验证。实验结果表明:该方案可以将杂散信号调试到工作带宽之外,且同通道、同频点的全温增益变化小于2 d B。Aiming at the problem that the channel gain of the multi-channel radio frequency optical transmission module based on the wavelength division multiplexing technology is small,the channel gain fluctuates greatly due to the spurious signals in the bandwidth generated by the four-wave mixing effect and the wavelength drift at high and low temperature.Based on the principle of frequency mixing and wavelength tuning of the optical transmitter,a solution to the gain fluctuation and in-band spurious of the multi-channel radio frequency optical transmission module is designed.The optimization algorithm of wavelength combina-tion is used to calculate a set of wavelength values that meet the requirements,and the optical transmitter is tuned by temperature.wavelength,and experimentally verified using a tuning system based on tuned wavelengths.The experimental results show that the scheme can debug the spurious signal outside the working bandwidth,and the full temperature gain change of the same channel and the same frequency point is less than 2 dB.

关 键 词：射频光传输 四波混频 杂散信号 波长漂移 波长调谐 

分 类 号：TN256[电子电信—物理电子学]