Microwave source phase noise measurement device based on bidirectional optical phase modulator
A phase modulator and phase noise technology, applied in electromagnetic wave transmission systems, electrical components, transmission systems, etc., can solve problems such as large insertion loss, lower system conversion efficiency, increase system cost and complexity, etc., to reduce noise floor, The spectrum is pure and avoids the effect of low conversion efficiency
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[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.
[0027] like figure 1 As shown, it is a microwave source phase noise measurement device based on a bidirectional optical phase modulator in a preferred embodiment of the present invention, including:
[0028] Microwave power divider 10, laser 20, optical circulator 30, first branch, second branch, optical coupler 60, photodetector 70 and signal analysis device 90, described first branch is provided with bidirectional An optical phase modulator 41, a first fiber Bragg grating 42, and a single-mode fiber 43, a second fiber Bragg grating 51 and an adjustable optical delay line 52 are arranged in sequence in the second branch, and the optical circulator 30 is set There are three ports...
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