Li Enbang
College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, China.
Opt Lett. 2007 Jul 15;32(14):2064-6. doi: 10.1364/ol.32.002064.
Single-mode-multimode-single-mode (SMS) fiber structures have been demonstrated to be a simple and effective way to realize multimode interference (MMI) in optical fibers. The temperature dependence of the spectral characteristics of SMS devices is investigated. By utilizing the feature that the response spectra of SMS devices with opposite polarities to temperature and axial tensile strain, I demonstrate that temperature compensation of SMS devices can be realized by using materials with a proper coefficient of thermal expansion. A temperature stability of 1.0 pm/ degrees C has been experimentally demonstrated with a ceramic as the packaging material.
单模-多模-单模（SMS）光纤结构已被证明是在光纤中实现多模干涉（MMI）的一种简单而有效的方法。研究了SMS器件光谱特性的温度依赖性。通过利用SMS器件对温度和轴向拉伸应变具有相反极性的响应光谱这一特性，我证明了可以通过使用具有适当热膨胀系数的材料来实现SMS器件的温度补偿。以陶瓷作为封装材料，通过实验证明了温度稳定性为1.0 pm/℃。
