A wideband optical channelized receiver based on coherent optical frequency combs and Fabry-Perot filter

被引：1

作者：

Zhong, Xin ^{[1
]}

Chen, Zhiyu ^{[1
]}

Liu, Jingxian ^{[1
]}

Chen, Jixin ^{[1
]}

机构：

[1] Sci & Technol Elect Informat Control Lab, Chengdu 610036, Sichuan, Peoples R China

来源：

SECOND SYMPOSIUM ON NOVEL TECHNOLOGY OF X-RAY IMAGING | 2019年 / 11068卷

关键词：

optical channelized receiver; optical frequency comb; spurious free dynamic range; modulator; RF;

D O I：

10.1117/12.2524141

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

An optical channelized receiver (OCR) with a novel structure based on two coherent optical frequency combs (OFCs) and a Fabry-Perot (FP) filter has been proposed. Input wideband signals are multicasted in all optical channels by modulating one OFC. Then, different sub-frequency bands in all optical channels are filtered out by the FP filter. Finally, the sub-frequency bands are directly converted to intermediate frequency (IF) via coherent optical heterodyne with the LO provided by another OFC. Experiment results shows that the OCR works in X band with 8 channels, and the bandwidth of each channel is 500MHz, which means the instantaneous bandwidth of the OCR is 4GHz. The max power fluctuation between different channels is 4dB, which can be improved by adding proper attenuators to certain channels. The spurious free dynamic range (SFDR) of all channels is above 44dB under noise bandwidth of 1MHz, which equals to 84 dB center dot Hz(2/3).

引用

页数：4

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