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Device for actively calibrating optical fiber transmission of microwave signals by means of photoelectric oscillator

A photoelectric oscillator and microwave signal technology, which is applied in the field of microwave photonics, can solve the problems of large correction error and low correction precision, and achieve the effect of realizing practicality, overcoming low precision and stable structure

Active Publication Date: 2015-08-05
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology

However, the correction accuracy using passive phase correction is low and requires a large correction error
In order to overcome the shortcomings of passive phase control, this patent proposes a new method to actively eliminate the phase error of RF signals in real time

Method used

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  • Device for actively calibrating optical fiber transmission of microwave signals by means of photoelectric oscillator
  • Device for actively calibrating optical fiber transmission of microwave signals by means of photoelectric oscillator
  • Device for actively calibrating optical fiber transmission of microwave signals by means of photoelectric oscillator

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Embodiment Construction

[0015] The device for actively calibrating microwave signal optical fiber transmission using a photoelectric oscillator provided by the present invention includes: a central station 20 and a base station 50, and the central station 20 and the base station 50 are connected through a single-mode optical fiber 40 . The device for actively calibrating microwave signal optical fiber transmission using a photoelectric oscillator, wherein the central station 20 includes: a laser 21 for carrying microwave signals that need to be transmitted, and the optical signals are input to a double-balanced Mach-Zehnder intensity modulator 22 to generate modulation The sidebands are then passed through the optical filter. For the Mach-Zehnder modulator, one Mach-Zehnder modulation is biased at the minimum transmission point, so the carrier is suppressed, and the other Mach-Zehnder modulator is biased at the maximum transmission point, through The optical filter performs filtering to generate a sin...

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Abstract

A device for actively calibrating optical fiber transmission of microwave signals by means of a photoelectric oscillator comprises a central station and a base station, wherein the central station is connected with the base station through a single-mode optical fiber. The device can overcome defects of a traditional electronic method at aspects of bandwidth, weight, size, electromagnetic interference, etc. Furthermore the device overcomes a bottleneck of realizing stable-phase transmission of high-frequency microwave signals through electronic technology.

Description

technical field [0001] The invention belongs to the technical field of microwave photonics, and more specifically relates to a photon technology and a photoelectric oscillator theory for phase-stable transmission of microwave signals, and a device for realizing phase-stable transmission of microwave signals by optical fibers based on round-trip phase correction technology. Background technique [0002] In recent years, the phase-stable transmission of microwave signals based on single-mode optical fiber based on photonic technology has attracted extensive attention, including modern multi-base station radar, long-baseline interferometry deep-space detection system, various interferometry systems, and long-baseline antennas for radio astronomy. In fields such as radio frequency communication systems such as array formation, and electronic countermeasure systems, the integration of microwave technology and photonic technology has become an inevitable trend of scientific and tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/2587
Inventor 王文亭刘建国梅海阔王欣祝宁华
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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