Related Experiment Video
Updated: Jul 16, 2026
16:11
Implementation of a Reference Interferometer for Nanodetection
Published on: April 26, 2014
9.4K
Machine-Learning-Assisted Instantaneous Frequency Measurement Method Based on Thin-Film Lithium Niobate on an
Qianqian Jia1, Zichuan Xiang1,2, Dechen Li1,2
1Laboratory of Nano Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China.
Sensors (Basel, Switzerland)
|March 13, 2024
Summary
This study presents a reconfigurable microwave photonic system for instantaneous frequency measurement. The system utilizes a novel phase modulator, offering flexible measurement ranges and high sensitivity for applications like radar detection.
Area of Science:
- Photonics
- Microwave Engineering
- Integrated Optics
Background:
- Instantaneous frequency measurement (IFM) is crucial for electronic warfare and signal intelligence.
- Traditional IFM systems often lack reconfigurability and miniaturization capabilities.
- Thin-film lithium niobate on insulator (LNOI) technology offers a promising platform for integrated photonic devices.
Purpose of the Study:
- To develop and demonstrate a simple, reconfigurable, and miniaturized microwave photonic system for instantaneous frequency measurement.
- To leverage LNOI phase modulators for enhanced system sensitivity and performance.
- To explore the system's capability to adapt measurement ranges and accuracy using optical carrier wavelength tuning.
Main Methods:
- A novel microwave photonic system was designed and implemented using a low-voltage thin-film LNOI phase modulator.
- The system's frequency measurement capabilities were experimentally validated across various microwave signal ranges.
- Stacked integrated learning models were employed to process measurement data and enhance accuracy.
- Optical carrier wavelength was dynamically adjusted to modify the frequency measurement range and precision.
Main Results:
- The system demonstrated successful instantaneous frequency measurement with average errors of 26.9 MHz (0-10 GHz), 44.57 MHz (3-15 GHz), and 13.6 MHz (12-18 GHz).
- High sensitivity was achieved, with the system responding to signals as low as -30 dBm with a 62.06 MHz error.
- The low half-wave voltage of the LNOI phase modulator significantly improved system sensitivity.
Conclusions:
- The developed microwave photonic system offers a reconfigurable and miniaturized solution for instantaneous frequency measurement.
- The use of LNOI technology and optical carrier wavelength tuning provides flexibility in measurement range and accuracy.
- The system shows significant potential for applications in radar detection, early warning reception, and other electronic intelligence fields.
