Chadderdon Spencer, Woodard Leeland, Perry Daniel, Selfridge Richard H, Schultz Stephen M
Department of Electrical and Computer Engineering, Brigham Young University, Provo, Utah 84602, USA.
Appl Opt. 2013 Apr 20;52(12):2682-7. doi: 10.1364/AO.52.002682.
This paper describes a method for tuning the resonant wavelengths of slab-coupled optical fiber sensors (SCOSs). This method allows multiple sensors to be interrogated simultaneously with a single tunable laser. The resonances are tuned by rotating a biaxial slab waveguide relative to an optical D-fiber. As the slab waveguide rotates, its effective index of refraction changes causing the coupling wavelengths of the slab waveguide and D-fiber to shift. A SCOS fabricated with potassium titanyl phosphate crystal as the slab waveguide is shown to have resonance tuning ranges of 6.67 and 22.24 nm, respectively, for TM and TE polarized modes.
本文描述了一种用于调谐平板耦合光纤传感器（SCOS）谐振波长的方法。该方法允许使用单个可调谐激光器同时对多个传感器进行询问。通过相对于光学D型光纤旋转双轴平板波导来调谐谐振。随着平板波导旋转，其有效折射率发生变化，导致平板波导与D型光纤的耦合波长发生偏移。结果表明，以磷酸氧钛钾晶体作为平板波导制作的SCOS，对于TM和TE偏振模式，其谐振调谐范围分别为6.67纳米和22.24纳米。
