Optical control terahertz wave amplitude modulator based on silicon nanoneedle
An amplitude modulation and terahertz wave technology, applied in the field of terahertz applications, can solve the problems of low power and large terahertz loss, and achieve the effect of large modulation depth and low insertion loss
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[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0024] In this embodiment, an optically controlled terahertz wave modulator based on silicon nanoneedles is provided, and its structure is as follows figure 2 As shown, it includes a semiconductor laser 3, an optical fiber 4, an optical fiber modulator 5 and a terahertz amplitude modulation structure. The laser light generated by the semiconductor laser 3 is coupled into the optical fiber modulator 5 through an optical fiber 4; the terahertz amplitude modulation structure is made of silicon-based The bottom layer 1 and the silicon nano-tip array 2 on its surface are composed, and the optical fiber modulator outputs modulated laser light 6 incident on the surface of the silicon nano-tip array; thus, the terahertz wave beam 8 generated by the terahertz wave source 7 produces a transmission modulation effect, and is Received by Terahertz Wave De...
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