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Multifunctional microwave photonic module and signal processing method and device based thereon

A signal processing device and microwave photon technology, applied in the field of microwave photons, can solve the problems of complex implementation and limited effect

Active Publication Date: 2020-12-18
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods are complicated to implement and have limited effect

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  • Multifunctional microwave photonic module and signal processing method and device based thereon
  • Multifunctional microwave photonic module and signal processing method and device based thereon
  • Multifunctional microwave photonic module and signal processing method and device based thereon

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Embodiment Construction

[0066] Aiming at the deficiencies of the prior art, the idea of ​​the present invention is to construct a multi-functional microwave photonic module based on dual-polarization dual-parallel Mach-Zehnder modulators and balanced photodetectors, and to measure the relative intensity in the microwave photonic link from the outside of the laser The noise can be effectively suppressed, and the microwave signal can be mixed, frequency multiplied and phase shifted. Specifically, the multifunctional microwave photonic module of the present invention includes a dual-polarization dual-parallel Mach-Zehnder modulator, a polarization controller, a polarization beam splitter, and a balanced photodetector; the dual-polarization dual-parallel Mach-Zehnder modulator The output end is connected to the input end of the polarization beam splitter through the polarization controller, and the two output ends of the polarization beam splitter are respectively connected to the two input ends of the ba...

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Abstract

The invention discloses a multifunctional microwave photon module, which comprises a dual-polarization dual-parallel Mach-Zehnder modulator, a polarization controller, a polarization beam splitter anda balance photoelectric detector. The output end of the dual-polarization dual-parallel Mach-Zehnder modulator is connected with the input end of the polarization beam splitter through the polarization controller, and the two output ends of the polarization beam splitter are connected with the two input ends of the balance photoelectric detector respectively. The invention further discloses a signal processing method and device based on the multifunctional microwave photon module. The relative intensity noise in the microwave photonic link is effectively suppressed from the outside of the laser, various kinds of processing such as frequency mixing, frequency doubling and phase shifting can be carried out on microwave signals, the structure is simple, and the implementation cost is low.

Description

technical field [0001] The invention relates to a multifunctional microwave photonic module and a signal processing method and device based on it, belonging to the technical field of microwave photonics. Background technique [0002] Due to its broadband response, low loss, and anti-electromagnetic interference, microwave photonic links have broad application prospects in radar, wireless communication, and spectrum cognition. As an important indicator of link performance, system noise is a key factor restricting its application. As one of the main active devices in microwave photonic links, laser is an important source of system noise. Three types of noise exist in lasers: thermal noise, shot noise, and relative intensity noise. where the relative intensity noise power is proportional to the square of the laser power. When the output power of the laser meets the requirements of practical applications, the relative intensity noise is the main component of the noise. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/516H04B10/548G02B27/28
CPCG02B27/28G02B27/283H04B10/516H04B10/548
Inventor 张亚梅潘时龙李肇昱薛敏邵琨麟刘策
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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