Zhang Haibin, Ho Stephen, Eaton Shane M, Li Jianzhao, Herman Peter R
Edward S Rogers Department of Electrical and Computer Engineering, Institute of Optical SciencesUniversity of Toronto, Toronto, ON, Canada.
Opt Express. 2008 Sep 1;16(18):14015-23. doi: 10.1364/oe.16.014015.
A single-step fast-writing method of burst ultrafast laser modification was applied to form a mesh network of multi-wavelength Bragg grating waveguides in bulk fused silica glass. Strain-optic and thermo-optic responses of the laser-written internal sensors are reported for the first time. A dual planar layout provided independent temperature- and strain-compensated characterization of temperature and strain distribution with coarse spatial resolution. The grating responses were thermally stable to 500 masculineC. To our best knowledge, the grating network represents the first demonstration of 3D distributed optical sensing network in a bulk transparent medium. Such 3D grating networks open new directions for strain and temperature sensing in optical circuits, optofluidic, MEMS or lab-on-a-chip microsystems, actuators, and windows and other large display or civil structures.
采用单步快速写入的突发超快激光改性方法，在块状熔融石英玻璃中形成多波长布拉格光栅波导的网状网络。首次报道了激光写入内部传感器的应变光学和热光响应。双平面布局提供了具有粗略空间分辨率的温度和应变分布的独立温度和应变补偿表征。光栅响应在500℃时热稳定。据我们所知，该光栅网络是块状透明介质中3D分布式光学传感网络的首次演示。这种3D光栅网络为光电路、光流体、MEMS或芯片实验室微系统、致动器以及窗户和其他大型显示器或民用结构中的应变和温度传感开辟了新方向。
