Xue Min, Pan Shilong, Zhao Yongjiu
Opt Lett. 2014 Jun 15;39(12):3595-8. doi: 10.1364/OL.39.003595.
An approach to suppress the measurement errors induced by the high-order sidebands of the optical single-sideband (OSSB) signal in the OSSB-based optical vector network analyzer (OVNA) is proposed and experimentally demonstrated. An analytical model for studying the measurement errors of the OSSB-based OVNA is established. Results show that the measurement errors introduced by the high-order sidebands can be obtained by suppressing the optical carrier in the OSSB signal. By subtracting these errors from the ordinary frequency responses measured by the OVNA, accurate frequency responses can be achieved. A proof-of-concept experiment is performed. The magnitude and phase responses of a fiber Bragg grating are measured with good coincidence by the OSSB signals with different modulation indices.
提出并通过实验证明了一种抑制基于光单边带（OSSB）信号的高阶边带在基于OSSB的光矢量网络分析仪（OVNA）中引起的测量误差的方法。建立了用于研究基于OSSB的OVNA测量误差的解析模型。结果表明，通过抑制OSSB信号中的光载波，可以获得由高阶边带引入的测量误差。通过从OVNA测量的普通频率响应中减去这些误差，可以实现准确的频率响应。进行了概念验证实验。利用具有不同调制指数的OSSB信号对光纤布拉格光栅的幅度和相位响应进行了测量，测量结果吻合良好。
