Spatial-Resolution Improvement in Optical Frequency Domain Reflectometry System Based on Tunable Linear Fiber Laser

摘要：

In optical frequency domain reflectomeiry (OFDR) system, the spatial resolution is obtained by using the total frequency-sweep span of the tunable laser. However, in practice, the spatial resolution is severely limited by nonlinearity in the lightwavefrequency sweep of the tunable laser. A closed-loop PZT modulated DBR linear fiber laser is proposed to improve the spatial resolution of the OFDR system. Experimental results show that the spatial resolution of OFDR system has improved greatly. When the frequency sweep excursion is 66GHz and the fiber under test (FUT) is 7 m, the OFDR system has a spatial resolution of 1.5 m with open-loop PZT modulated laser. But the spatial resolution increases to 35 cm with closed-loop PZT modulated laser.

作者: Guoyu Li Peng Zhao Yan Li

作者单位: Institute of Information Engineering, Handan College, Handan, 056005, P. R. China School of Physics & Optoelectronic Engineering, Dalian University of Technology,Dalian 116024, P. R.

会议类型: 国际会议

会议名称: 3rd International Photonics & OptoElectronics Meetings(第三届国际光子与光电子学会议 POEM 2010)

会议地点: 武汉

会议语种:英文

页码: 1-5

在线出版日期: 2010-11-03（万方平台首次上网日期，不代表论文的发表时间）