A Coupled Photoelectric Oscillation Signal Generator with High-speed Adjustable Frequency

Abstract

The invention discloses a coupled photoelectric oscillation signal generator with high-speed tunable frequency, which uses a phase-locked loop to lock the signal phase of an oscillator to an externalhigh-stability reference source, thereby realizing low phase noise and high stable RF signal output; and simultaneously uses the frequency division ratio of a programmable fractional frequency dividerand the synchronous control of the center wavelength of a tunable optical filter, so that the oscillation frequency matches with the frequency of a laser cavity mode, thereby achieving the stable oscillation of the output frequency of the coupled oscillator. Due to the fast response of the tunable optical filter and the phase-locked loop, the coupled photoelectric oscillation signal generator with high-speed tunable frequency can realize that the frequency of the coupled optical oscillator is rapidly tuned, and can be applied to provide a high quality and rapid and tunable RF local oscillatorsource for systems of wireless communication, radar, electronic warfare, and the like.

Description

technical field [0001] The invention belongs to the field of optoelectronic technology, in particular to a coupled optoelectronic oscillation signal generator with high-speed adjustable frequency. Background technique [0002] High-quality microwave signal sources play an important role in modern communication systems. Many fields such as aerospace, instrument measurement, electronic countermeasures, and radar navigation have put forward high requirements for the quality of microwave signal sources. However, traditional microwave oscillators have disadvantages such as low quality factor and phase noise characteristics limited by operating frequency, which also makes researchers turn their attention to the emerging microwave photonics, and optoelectronic oscillators have also emerged as the times require. The optoelectronic oscillator is an optoelectronic hybrid loop composed of an optical radio frequency link and an electrical amplification frequency selection link. With the...

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Problems solved by technology

Since the oscillation of the coupled oscillator depends on the mode matching of the fiber laser cavity and the optoelectronic circuit, the adjustability is relatively complicated, and there is no report on the frequency tunable coupled optoelectronic oscillator in the literature.

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