High stability photoelectric oscillator and control method

Abstract

The present application discloses a high stability photoelectric oscillator, comprising an oscillation circuit composed of a laser, a modulation unit, a polarization unit, a first FP etalon, a secondFP etalon, a photoelectric conversion unit, an amplification unit, a filtering unit, and a coupling unit. A first polarized light signal and a second polarized light signal, which are decomposed fromthe modulated laser signal, respectively generate two optical signals having different peak wavelengths through the first FP etalon and the second FP etalon; the two optical signals having different peak wavelengths are combined and inputted to the amplification unit by outputting a microwave oscillating signal through the photoelectric conversion unit; and then two optical signals having different peak wavelengths are sent to the modulation unit through the filtering unit and the coupling unit. The invention further comprises a control method for adjusting the angle and position of the firstpolarized light, the first FP etalon, the second polarized light, and the second FP etalon to maximize the Q value of the microwave oscillating signal. The high stability photoelectric oscillator andthe control method of this invention can solve the problem that the stability of the microwave oscillation signal generated by the photoelectric oscillator is easily affected by the temperature and pressure changes, thereby realizing a microwave source with simple structure and high stability.

Description

technical field [0001] The present application relates to the field of microwave technology, in particular to a high-stability photoelectric oscillator and a control method. Background technique [0002] In electronic devices in the fields of radar, communication, and metering, microwave frequency sources with low phase noise and high stability are the core components. Photoelectric oscillator is a kind of microwave frequency source generating device which is widely used at present. Compared with the traditional method, the phase noise index is better, and the structure is compact, the continuous working time is long, and the application range is wider. The main components of an optoelectronic oscillator are composed of a laser, an optical filter cavity, an optical detector, an electrical amplifier, and an optical modulator. [0003] At present, optical filter cavities are generally composed of optical fibers or micro-nano structured optical filter cavities: for example, ac...

AI Technical Summary

Problems solved by technology

However, if the optical energy storage device uses optical fibers, the frequency stability of the output microwave oscillation signal is easily affected by changes in temperature and pressure; The coupling regulation complex

The optical filter cavity itself is also susceptible to temperature disturbances, causing the central wavelength of the optical filter cavity to fluctuate, which ultimately affects the stability of the microwave oscillation signal generated by the optoelectronic oscillator

Images