研究目的
Investigating the development of a high-resolution temperature sensor based on optical heterodyne spectroscopy technology using a single-frequency fiber laser.
研究成果
The study successfully demonstrates a high-resolution temperature sensor based on optical heterodyne spectroscopy technology with a single-frequency fiber laser. The sensor achieves a sensitivity of 14.74 pm/?C and a resolution of ~5 × 10?3 ?C, with potential for further improvement in resolution with enhanced frequency stability.
研究不足
The temperature detection range is limited by the bandwidth of the photodetector (PD). The experimental resolution is constrained by beat-frequency jitter, and the theoretical resolution could be higher with improved frequency stability.
1：Experimental Design and Method Selection:
The study utilizes a single-frequency ring fiber laser with a narrow linewidth for temperature sensing. Optical heterodyne spectroscopy technology is employed to exploit the narrow linewidth characteristic of the laser for high-resolution temperature measurement.
2：Sample Selection and Data Sources:
The temperature sensor operates in the range of 3?85 ?C, with specific measurements taken in the range of 18.26–18.71 ?C for detailed analysis.
3：26–71 ?C for detailed analysis. List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Includes a single-frequency ring fiber laser, optical spectrum analyzer (OSA), electrical spectrum analyzer (ESA), temperature controller (TC), and various optical components like FBG, FWDM, and optical circulator.
4：Experimental Procedures and Operational Workflow:
The setup involves tuning the laser's wavelength via temperature control of the FBG, measuring wavelength shifts with OSA, and analyzing beat frequencies with ESA for high-resolution temperature sensing.
5：Data Analysis Methods:
The relationship between temperature fluctuation and frequency shift is analyzed, and the sensitivity and resolution of the sensor are calculated based on the experimental data.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容-
electrical spectrum analyzer
N9030A PXA
Agilent
Analyzing the beat frequency between the self-made SFFL and the reference fiber laser.
暂无现货
预约到货通知
-
high-speed photodetector
DET01CFC
Thorlabs
Converting the optical signal into an electrical signal for analysis by the ESA.
暂无现货
预约到货通知
-
tunable single-frequency fiber laser
Koheras AdjustiK C15
NKT Photonics
Serving as the reference laser in the optical heterodyne system.
立即获取同款设备 -
optical spectrum analyzer
AQ6370D
Yokogawa
Monitoring the wavelength shift of the single-frequency fiber laser.
立即获取同款设备 -
登录查看剩余2件设备及参数对照表
查看全部
