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Grating- and fiber-coupled multi-beam coherent receiving system in mid- and far-infrared band
Grating- and fiber-coupled multi-beam coherent receiving system in mid- and far-infrared band
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机译:光栅和光纤耦合的多光束相干接收系统在中线和射频频带
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摘要
A grating- and fiber-coupled multi-beam coherent receiving system in a mid- and far-infrared band includes a mid- and far-infrared local oscillator signal source, a phase grating, a multi-beam fiber coupling system, a 2×2 pixel mid- and far-infrared superconducting HEB mixer, a multi-channel DC bias source, a multi-channel cryogenic low-noise amplifier, and a room-temperature intermediate-frequency and high-resolution spectrum processing unit. In a 2×2 multi-beam superconducting receiving system, an echelle grating and a cryogenic optical fiber are used to distribute and couple the local oscillator signal, and the mid- and far-infrared band high-sensitivity superconducting HEB mixer is used to realize efficient local oscillator signal distribution and coupling, and ultimately achieve high-sensitivity and high-resolution multi-beam spectrum reception in the mid- and far-infrared band.
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