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Integrated multi-beam optical phased array delay network based on wavelength division multiplexing

A technology of delay network and optical phased array, which is applied in the field of optical phased array, can solve the problems of large system and poor stability, and achieve the effect of full utilization, small size, and increased radar data rate

Active Publication Date: 2022-08-09
SHANGHAI JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these are all composed of discrete devices, which will bring problems such as large system size and poor stability, and most of them are only single beamforming networks

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  • Integrated multi-beam optical phased array delay network based on wavelength division multiplexing
  • Integrated multi-beam optical phased array delay network based on wavelength division multiplexing
  • Integrated multi-beam optical phased array delay network based on wavelength division multiplexing

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Embodiment Construction

[0027] The embodiments of the present invention are described in detail below with reference to the accompanying drawings and examples. The present embodiment is implemented on the premise of the technical solution of the present invention, and provides detailed implementation modes and operation procedures, but the protection scope of the present invention is not limited to The following examples.

[0028] figure 1 This is a schematic diagram of the overall structure of the integrated multi-beam optical phased array delay network based on wavelength division multiplexing of the present invention. It can be seen from the figure that the present invention is an integrated multi-beam optical phased array delay network based on wavelength division multiplexing. It consists of N traveling waveguides, N×M microring beam splitters, N×M fixed optical true delay networks, M adjustable optical true delay arrays and M column waveguides. The N×M microrings The beam splitters are arrange...

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Abstract

An integrated multi-beam optical phased array delay network based on wavelength division multiplexing for microwave photonic multi-beam phased array radar, which consists of N traveling waveguides, N × M micro-ring beam splitters, and N × M fixed optical A delay network, M channels of tunable optical true delay arrays and M channels of column waveguides are formed, the N×M micro-ring beam splitters are arranged in N rows and M columns, the N×M fixed optical true delay network connected with the N×M micro-ring beam splitters. The invention only needs M adjustable units to realize a phased array radar with M array elements and N beams, and has the advantages of simple structure control, flexibility, high integration, large instantaneous bandwidth and high resolution.

Description

technical field [0001] The invention relates to an optical phased array, in particular to an integrated multi-beam optical phased array delay network based on wavelength division multiplexing. Background technique [0002] Radar is the transliteration of Radar (Radio Detection and Ranging), which first appeared in the 1930s. Its basic working principle is to receive the transmitted signal through the receiver and perform a series of arithmetic processing to obtain the distance of the detected target. , angle information, etc. When a radar searches for a target, it needs to constantly change the direction of the beam. The traditional method of changing the direction of the beam is to rotate the antenna so that the beam sweeps over a certain airspace, ground or sea, which is called mechanical scanning. The radar that uses mechanical scanning is the conventional radar. Due to the inertia of the antenna, the scanning speed is slow, the accuracy is low, and the reliability is n...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/02
CPCG01S13/02G01S2013/0245Y02A90/10
Inventor 陆梁军朱晨周林杰陈建平刘娇
Owner SHANGHAI JIAOTONG UNIV