AlInGaAs MQW Transceiver with Electro-optic Modulation Characteristics for Free-Space Optical Communication and Sensing

Xin Li; Xu Wang; Yun Li; Feifei Qin; Yan Jiang; Linning Wang; Yongjin Wang

doi:10.1021/acsomega.1c03865

AlInGaAs MQW Transceiver with Electro-optic Modulation Characteristics for Free-Space Optical Communication and Sensing

ACS Omega. 2021 Sep 3;6(36):23614-23620. doi: 10.1021/acsomega.1c03865. eCollection 2021 Sep 14.

Authors

Xin Li^{1

2}, Xu Wang¹, Yun Li¹, Feifei Qin¹, Yan Jiang¹, Linning Wang¹, Yongjin Wang¹

Affiliations

¹ Grünberg Research Centre, Nanjing University of Posts and Telecommunications, Nanjing 210003, China.
² Key Lab of Broadband Wireless Communication and Sensor Network Technology (Nanjing University of Posts and Telecommunications), Ministry of Education, Nanjing 210003, China.

Abstract

Integrated transceivers with electro-optic modulation characteristics are valuable for free-space optical communications and sensing. We propose an AlInGaAs multiple quantum well (MQW) transceiver with electro-optic modulation characteristics over a broad spectral range. Two identical AlInGaAs MQW diodes on a single wafer are used to transmit and receive optical signals and provide obvious electro-optic modulation for broad-spectrum light. The photocurrent modulation ratio reaches 13.9 and 11.3 for white light and 1550 nm infrared light, respectively, with varying bias voltages. The transceiver can identify environmental changes and forward electrical signals with different frequencies in the form of superimposed optical signals.