Arbitrary waveform generator and method for generating arbitrary waveform

Abstract

The invention provides an arbitrary waveform generator which comprises a femtosecond optical-frequency comb, a frequency locking unit, a pulse laser unit, an optical isolator, an optical-frequency comb tooth extracting unit, a tunable filtering unit, an optical amplifying unit, a wave combining unit, a polarization control unit, a photoelectric detecting unit, a frequency mixing unit and a computer control system. According to the arbitrary waveform generator, the electronic bottleneck limitations of the sampling rate and the storage capacity, multi-channel synchronization, phase precision adjustment and the high-speed A / D and D / A converting rate in an existing arbitrary waveform generator based on the direct numerical frequency synthesis technology are fundamentally broken through; more flexible system design can be supplied, microwave and millimeter wave signals with wider frequency band and lower phase noise are generated and arbitrary waveform output of a microwave and micrometer wave high-frequency wave band is achieved; and the arbitrary waveform generator has the advantages of being capable of optical-fiber-oriented, resistant to electromagnetic interference, high in accuracy, high in sensitivity and good in stability.

Description

technical field [0001] The invention relates to the technical field of testing, in particular to an arbitrary waveform generator and a method for generating an arbitrary waveform. Background technique [0002] Signal generation technology is an important technical basis for national economic construction, national defense construction, and scientific research, and has important applications in high-speed optical communication, metrology, and basic research. As a representative of signal generation technology, arbitrary waveform generator is a kind of general-purpose signal source that has developed rapidly in recent years. Compared with traditional signal sources, the biggest advantage of arbitrary waveform Standard signals such as sine wave and square wave have the advantages of high output frequency stability and resolution, fast frequency switching speed, and continuous waveform phase during switching. They can be widely used in underwater sonar, communication, radar navi...

AI Technical Summary

Problems solved by technology

[0008] The present invention proposes an arbitrary waveform generator based on a femtosecond optical frequency comb dual light source structure and an arbitrary waveform generation method, which solves the bandwidth and carrier frequency electronic bottlenecks of the prior art arbitrary waveform generator, and the inability to realize short-wave and millimeter-wave Problems with arbitrary waveform output in the high frequency band

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