Photonic Image Rejection Mixer Based on Polarization Manipulation of a Broadband Optical Source

IEEE Photonics Journal

Guangyi Li¹  Zhiyao Jia¹  Wei Li¹  Ning Hua Zhu¹  Difei Shi¹  Ming Li¹ 

[1] State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China;

关键词: Microwave photonics;    image rejection;    broadband optical source;    polarization manipulation;   

DOI  :  10.1109/JPHOT.2021.3065216

来源: DOAJ

【 摘 要 】

We propose a photonic mixer with image rejection capability using a broadband optical source (BOS) and polarization processing. Intermediate frequency (IF) signals with image rejection are generated from the local oscillator-modulated and the time-delayed radio frequency (RF)-modulated BOS light. The RF operating frequency is flexibly tunable over a wide range by simply adjusting the time delay. In addition, the proposed system is free from dispersion-induced mixing power fading and bias drift problem. Experimental results exhibit an image rejection ratio of more than 44.6 dB for RF signals from 2 to 18 GHz, while the IF signal is fixed at 800 MHz. Image rejection mixing operation at different IF frequencies and signal power is also confirmed.

【 授权许可】

Unknown