An optical fiber methane gas sensing film sensor based on core diameter mismatch

• 来源期刊: 中国光学快报(英文版)
• 学科: 工学
• 关键词: 标准单模光纤 甲烷传感器 气体传感器 不匹配 传感膜 直径 传感器信号 薄膜厚度
• 年，卷（期）: 2010,（5）
• 所属期刊栏目: Instrumentation, Measurement, and Metrology
• 页码范围: 482-484
• 页数: 3页
• 分类号: TP212 TQ342.82
• 语种: 英文

摘要

An optical fiber evanescent wave methane gas sensor based on core diameter mismatch is reported.The sensor consists of a multimode fiber in which a short section of standard single-mode fiber,coated with the inclusion of cryptophane molecules E in a transparent polysiloxane film,is inserted.The sensing principle is analyzed by optical waveguide theory.For different sensing film thicknesses and interaction lengths,the sensor signal is investigated within the methane concentration range of 0-14.5%(v/v).It ...