Lianqing Zhu

Jan 2, 2025 | mdpi.com | Lianqing Zhu

Open AccessArticle by Mingyang Hou 1,2,3, Yumin Zhang 1,2,3,*, Xin Xiong 1,2,3 and Lianqing Zhu 1,2,3 1 Beijing Engineering Research Center of Optoelectronic Information and Instruments, Beijing Information Science and Technology University, Beijing 100192, China 2 Beijing Laboratory of Optical Fiber Sensing and System, Beijing Information Science and Technology University, Beijing 100016, China 3 School of Instrument Science and Opto-Electronics Engineering, Beijing Information Science and...

Aug 10, 2023 | opg.optica.org | Yingjie Xu |Lidan Lu |Lianqing Zhu |Yuming Huang

A silicon-on-insulator (SOI) variable optical attenuator (VOA) based on the plasma dispersion effect is optimized and realized, and the effects of doping concentration and distance about the VOA’s modulation depth and attenuation efficiency are investigated. Two structures of the VOA component are designed to achieve low power consumption, high stability, and high modulation efficiency. The modulation depth of the series VOA scheme reached 60.11 dB, and the insertion loss is only 4.87 dB.