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Polarization insensitive high-frequency-multiplication optical millimeter wave generation simplification device and method

A polarization-insensitive, millimeter-wave technology, applied in electromagnetic wave transmission systems, electromagnetic transmitters, electrical components, etc., to achieve the effects of low price, stable performance, and reduced system complexity and cost

Inactive Publication Date: 2018-02-23
HUNAN NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of the above situation, the present invention solves the problems in system complexity, cost and performance stability in the generation of light-borne millimeter waves

Method used

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  • Polarization insensitive high-frequency-multiplication optical millimeter wave generation simplification device and method
  • Polarization insensitive high-frequency-multiplication optical millimeter wave generation simplification device and method
  • Polarization insensitive high-frequency-multiplication optical millimeter wave generation simplification device and method

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Embodiment Construction

[0044] The present invention will be described in detail below in conjunction with specific experimental examples and accompanying drawings.

[0045] Depend on figure 1 As shown, the components of the simplified device for polarization-insensitive high-multiplier optical-carried millimeter wave generation are described as follows:

[0046] Continuous laser 1, used to generate an optical carrier of a specified wavelength;

[0047] Dual-arm lithium niobate-Mach-Zehnder modulator 2, used to realize optical center carrier, first-order sideband and second-order sideband suppression modulation, and generate sidebands of ±3rd order and above;

[0048] The radio frequency signal 3 is used to drive the dual-arm lithium niobate-Mach-Zehnder modulator;

[0049] A band-pass filter 4 is used to filter out high-order sidebands above ±3 order to obtain required ±3-order sidebands;

[0050] An optical cross multiplexer 5, configured to separate the ±3-order sidebands;

[0051] A single-ar...

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Abstract

The invention discloses a polarization insensitive high-frequency-multiplication optical millimeter wave generation simplification device and method belonging to the field of optical millimeter wave generation in a ROF (Radio Over Fiber) communication system technology. According to the invention, a double-arm lithium niobate and mach-zehnder modulator is adopted, and by setting proper bias voltage, modulation depth and a phase difference between radio frequency signals and combining a band-pass filter, plus and minus 3 order sidebands which are the same in polarization direction and locked inphase are generated; then a data baseband signal is loaded to the minus 3 order sideband by a single-arm mach-zehnder modulator, and after the minus 3 order sideband loaded with the data and the plus3 order sideband are coupled, the obtained product is fed into a SOA (Semiconductor Optical Amplifier) to implement degenerate four-wave mixing; and finally, plus and minus 9 order sidebands are filtered out by utilizing an optical cross multiplexer and is fed into a photoelectric detector to be subjected to frequency beating to obtain a 18-frequency-multiplication electric millimeter wave. According to the invention, the high-frequency-multiplication high-stability optical millimeter wave can be generated with low cost; and the device and the method are simple in structure and easy to implement.

Description

technical field [0001] The invention belongs to the field of optical millimeter wave generation in radio-over-fiber (Radio-over-Fiber, abbreviated as ROF) communication system technology. Background technique [0002] As smart terminals such as smart phones and tablet computers widely enter people's lives, people have put forward demands for the acquisition and interaction of various multimedia broadband services anytime and anywhere, and the bandwidth demand for wireless communications will continue to grow in the future. In a wireless communication system, using a high-frequency carrier to transmit information can increase system capacity. Radio waves with a wavelength of 1-10nm are commonly referred to as millimeter waves. Using millimeter waves in this frequency band to transmit signals can solve the problem of wireless access bandwidth. However, radio waves with high frequencies attenuate quickly in the atmosphere and cannot be transmitted over long distances. Therefo...

Claims

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Application Information

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IPC IPC(8): H04B10/50H04B10/516H04B10/548
CPCH04B10/503H04B10/5165H04B10/548
Inventor 周慧曾羽婷陈明
Owner HUNAN NORMAL UNIVERSITY
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