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Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

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Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over...
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低交叉的超紧阵列接收模块用于目标位置检测.

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    科学领域:

    • 光子学和光学工程的工程.
    • 传感器技术 传感器技术
    • 集成光学 集成光学 集成光学

    背景情况:

    • 传统的目标检测系统往往受到低集成,大尺寸,高通道交叉和环境适应性差的困扰.
    • 需要紧,高度集成的模块,能够精确地监测目标位置和状态.
    • 光纤传感技术提供了增强检测能力的潜力,但需要复杂的接收模块.

    研究的目的:

    • 介绍一款用于目标位置检测的新型16通道超紧阵列接收模块.
    • 为了证明模块的低交叉声和高信号接收灵敏度的能力.
    • 评估模块在各种环境条件下的稳定性和适用性.

    主要方法:

    • 混合集成阵列波导网格 (AWG),可变光学减弱器 (VOA),阵列雪崩光二极管 (APD) 和操作放大器电路.
    • 制造一个模块的尺寸为90mm × 50mm × 8mm.
    • 性能评估包括通道交叉,信号接收灵敏度和在-10°C至60°C的温度范围内运行稳定性.

    主要成果:

    • 实现了16个通道的超紧模块尺寸 (90mm × 50mm × 8mm).
    • 证明了显著的低频道交叉声 - - 60dB.
    • 显示高信号接收灵敏度为-30dBm,在-10°C至60°C之间具有出色的稳定性.

    结论:

    • 开发的模块克服了离散检测系统的局限性,提供高集成,小体积,低交叉声和良好的环境适应性.
    • 当与光纤传感器配对时,该模块可以精确监控目标位置和状态.
    • 该模块在地震探测,水下监测和能源勘探方面具有重要的应用价值.