Double-Wavelength Optical Fiber Laser and Its Application for Measurement of Displacement and Large Step Height

摘要：

　　A tunable double-wavelength erbium-doped fiber(EDF)laser has been developed and its application to displacement and step height measurement using two-wavelength self-mixing interferometry(SMI)is demonstrated.The fiber laser can emit two different wavelengths without any laser mode competition.Each wavelength has its own gain medium which is a length of erbium-doped fiber.Two fiber Bragg gratings are used to determine the value of the emitted two wavelengths respectively.Displacement measurement with resolution of 1nm can be conducted by the system.And large step heights can be measured using multiple self-mixing interference of the two wavelengths.The maximum height that can be measured is half synthetic wavelength of the two wavelengths.A step height of 2mm constructed with two gauge blocks has been measured.The standard deviation of measurement results is 2.5nm.

关键词： fiber ring laser self-mixing interference displacement measurement step height measurement

作者: Dong Lianlian Xie Fang Ma Sen Wang Yunzhi

作者单位: Optical Science and Technology Laboratory,Department of Physics,School of Science,Beijing Jiaotong University,Beijing 100044,P.R.China

会议类型: 国际会议

会议名称: 第十七届国际制造会议(The 17th International Manufacturing Conference in China)(IMCC 2017))

会议地点: 深圳

会议语种:英文

页码: 1-6

在线出版日期: 2017-11-23（万方平台首次上网日期，不代表论文的发表时间）