Wide passband reconfigurable microwave quantum photon filtering device and filtering method based on stimulated brillouin scattering

A microwave photon filtering and stimulated Brillouin technology, applied in the directions of light guides, optics, optical components, etc., can solve problems such as narrow passband, and achieve the effect of increasing passband width and increasing passband width.

Active Publication Date: 2013-09-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of narrow passband existing in existing microwave photon filters, the present invention proposes a wide passband reconfigurable microwave photon filter device and filtering method based on stimulated Brillouin scattering

Method used

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  • Wide passband reconfigurable microwave quantum photon filtering device and filtering method based on stimulated brillouin scattering
  • Wide passband reconfigurable microwave quantum photon filtering device and filtering method based on stimulated brillouin scattering

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specific Embodiment approach 1

[0019] Specific implementation mode 1. Combination figure 1 Describe this embodiment mode. In this embodiment mode, a wide-passband reconfigurable microwave photon filter device based on stimulated Brillouin scattering is described. The filter device includes No. 1 laser 1-1 and No. 1 phase modulator 1-2 , RF amplifier 1-3, function generator 1-4, erbium-doped fiber amplifier 1-5, No. 1 isolator 1-6, circulator 1-7, optical fiber 1-8, detector 1-9, No. 2 isolation 1-10, No. 2 phase modulator 1-11 and No. 2 laser 1-12;

[0020] The laser signal output end of the No. 1 laser 1-1 is connected to the laser signal input end of the No. 1 phase modulator 1-2, and the modulation signal output end of the function generator 1-4 is connected to the modulation signal input end of the radio frequency amplifier 1-3. The drive signal output end of the amplifier 1-3 is connected to the drive signal input end of the No. 1 phase modulator 1-2, and the modulation signal output end of the No. 1 ...

specific Embodiment approach 2

[0023] Specific embodiment 2. This embodiment is a further description of a wide-passband reconfigurable microwave photon filter device based on stimulated Brillouin scattering described in specific embodiment 1. Optical fibers 1-8 are realized by single-mode optical fibers. .

specific Embodiment approach 3

[0024] Specific Embodiment 3. This embodiment is a further description of a wide-passband reconfigurable microwave photon filter device based on stimulated Brillouin scattering described in Embodiment 1. No. 1 laser 1-1 adopts distributed feedback type semiconductor laser, and the output laser wavelength of the distributed feedback type semiconductor laser is 1550nm.

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Abstract

The invention discloses a wide passband reconfigurable microwave quantum photon filtering device and filtering method based on stimulated brillouin scattering, relates to a microwave quantum photon filter based on the stimulated Brillouin scattering in optical fibers, and belongs to the optics and microwave crossing field. The wide passband reconfigurable microwave quantum photon filtering device and filtering method solves the problem that a passband of an existing microwave quantum photon filter is narrow. According to the quantum photon filtering device and filtering method, two lasers are adopted to respectively generate pump light and carrier wave light, two phase modulators are adopted to respectively conduct phase modulation on the pump light and the carrier wave light, two isolators are adopted to protect the lasers, the stimulated brillouin scattering occurs when first order lower edge frequency or first order upper edge frequency signals of the carrier wave in the optical fiber enter a stimulated Brillouin gain spectrum corresponding to the pump light, the width value of the edge frequency signals is amplified, a beat frequency signal is output through a detector, and then filtering of passband microwaves is realized. The quantum photon filtering device and filtering method is applied to microwave quantum photon filtering.

Description

technical field [0001] The invention relates to a microwave photon filter based on stimulated Brillouin scattering in an optical fiber, and belongs to the intersection fields of optics and microwaves. Background technique [0002] Microwave filters are one of the important devices in the communication field. Traditional microwave filters process radio frequency signals with electronic technology. The instruments are complex, consume a lot of power, and are susceptible to electromagnetic interference, which limits their performance and applications. [0003] In recent years, microwave photon filters based on the stimulated Brillouin scattering effect have been widely studied at home and abroad. The filter has good compatibility with optical fibers, low loss, anti-electromagnetic interference, simple structure, small size, and light weight. There are broad application spaces in the field of wireless communication and radar. [0004] The microwave signal modulates the probe li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/293
Inventor 董永康周登望姜桃飞吕志伟
Owner HARBIN INST OF TECH
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