High resolution demodulation for fiber grating sensors based on virtually-imaged phased array

作者：Chen Zhiwei; Tan Zhongwei^*

来源：Acta Optica Sinica, 2013, 33(4): 0422003.

DOI：10.3788/AOS201333.0422003

• Dispersive devices
• Fiber grating sensor
• High resolution
• Infra-red cameras
• Reproducibilities
• Spectral imaging
• Stability and reliabilities
• Volume diffraction gratings

It is proposed and demonstrated that a method to realize the fiber Bragg grating (FBG) demodulation based on virtually-imaged phased array (VIPA) and infrared imaging system. Two-dimensional (2D) spectral imaging can be realized by using VIPA and diffraction grating. The wavelength of the gratings can be integrated by analyzing the imaging of the infrared camera. It has no moving parts. The reproducibility, stability and reliability of the system is perfect and its resolution is higher than the traditional charge-coupled device (CCD) method by using VIPA as dispersive device instead of volume diffraction grating. The resolution of the system is better than 2 pm.

• 出版日期2013
• 单位北京交通大学