Microwave photonic frequency down-conversion and channel switching for satellite communication

We present a photonic approach to realize radio frequency (RF) down-conversion and intermediate frequency (IF) channel switching for satellite communication. Conventionally, photonic RF mixers always suffer from limitations of one operational state and one IF channel. We proposed a photonic repeater...

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Bibliographic Details
Published in:Optics letters 2020-09, Vol.45 (18), p.5000-5003
Main Authors: Zhu, Sha, Fan, Xiaojie, Li, Ming, Hua Zhu, Ning, Li, Wei
Format: Article
Language:English
Subjects:
Banded structure
Broadband
Conversion
Crosstalk
Intermediate frequencies
Microwave photonics
Mixers
Optical communication
Optical filters
Ports
Radio frequency
Satellite communications
Signal processing
Switching
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Summary:We present a photonic approach to realize radio frequency (RF) down-conversion and intermediate frequency (IF) channel switching for satellite communication. Conventionally, photonic RF mixers always suffer from limitations of one operational state and one IF channel. We proposed a photonic repeater that can realize multiple frequency down-conversion states and different IF channel switching. Two separated RF ports and two independent local oscillator ports ensure the repeater can down-convert RF signals in different bands simultaneously. Based on the characteristic that orthogonally polarized optical signals cannot beat with each other, the crosstalk between different channels is alleviated. Since no optical filters are involved, the repeater can process broadband RF signals down-conversion and broadband IF signals channel switching. The proposed photonic repeater features compact structure, broad and different bands of operation, and no physical optical splitting, which is promising for a satellite payload.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.398495