A multi-band tunable photogenerated millimeter wave generation system
An optically-generated millimeter-wave and multi-band technology, applied in the field of millimeter-wave communication, can solve the problems of increasing system complexity and cost, inability to output millimeter-wave at the same time, adjustment of the transmitting end and adverse effects of realization, etc., and achieve the effect of reducing system cost
Active Publication Date: 2022-06-24
SOUTHEAST UNIV
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[0004] However, some of the currently used methods can only generate a millimeter-wave output with a specific frequency. If you want to adjust the frequency of the output millimeter-wave, you can only re-select and modify the optical carrier and the frequency used for the beat-frequency optical wave, and cannot Realize the simultaneous output of multiple channels of millimeter waves that change regularly in frequency with one system
In some systems, in order to realize the generation of optically-generated millimeter waves that can cover multiple bands, the complexity and cost of the system are greatly increased, which has a negative impact on the adjustment and realization of the transmitter of the corresponding optical wireless communication system.
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[0021] In order to make those skilled in the art better understand the technical solutions of the present invention, the following briefly introduces the accompanying drawings required in the description of the embodiments or the prior art. Hereinafter, embodiments of the present invention will be described in detail, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, but not to be construed as a limitation of the present invention. It will be understood by those skilled in the art that the singular forms "a", "an", "the" and "the" as used herein can include the plural forms as well, unless expressly stated otherwise. It should be further understood that the word "comprising" used ...
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The invention discloses a multi-band adjustable optically-generated millimeter wave generation system. Data information is modulated on a lithium niobate Mach-Zehnder modulator to a carrier wave generated by a carrier laser, and the modulated The signal is divided into N channels; the frequency-adjustable optical signal for beat frequency is generated by the local oscillator optical signal generation module. N-channel signals; each signal and the signals from the optical splitter enter the optical coupler one by one, and then enter the photodetector to generate the required millimeter-wave signal at the beat frequency, and transmit it through the horn antenna. This system achieves beat frequency with multi-channel modulation signals. In the case of low system complexity, it can realize the generation and frequency adjustment of multi-band tunable optically-generated millimeter waves by changing the parameters of lasers and arrayed waveguide gratings, and simultaneously generate coverage Multi-band multi-channel millimeter waves with different frequencies.
Description
technical field [0001] The invention relates to the technical field of millimeter wave communication, in particular to a multi-band adjustable optical millimeter wave generation system. Background technique [0002] With the rapid development and iteration of communication technologies, the services provided by the communication system have also shown an explosive growth. The resources in the low frequency band have been almost exhausted, and the rapidly increasing communication demand cannot be met. The millimeter-wave frequency band with a frequency range of 30GHz to 300GHz can provide faster information transmission rate and larger communication capacity, and stable and easy-to-adjust millimeter-wave generation modules are the key to related optical communication systems. [0003] At present, in the traditional optical carrier wireless communication system, the generation schemes of optical carrier millimeter waves are generally divided into two categories, namely the sch...
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IPC IPC(8): H04B10/50H04B10/516H04J14/02
CPCH04B10/503H04B10/506H04B10/516H04J14/0202
Inventor 高爽朱敏张教王子璐刘翔许炜梁
Owner SOUTHEAST UNIV