Title :
Spatial resolution enhancement by external phase modulation in long-length FBG sensing system based on synthesis of optical coherence function
Author :
Kajiwara, Koji ; He, Zuyuan ; Hotate, Kazuo
Author_Institution :
Dept. of Electr. Eng. & Inf. Syst., Univ. of Tokyo, Tokyo, Japan
Abstract :
External phase modulation is newly combined with the synthesis of optical coherence function for improvement of spatial resolution in distributed sensing system using a long-length fiber Bragg grating. The spatial resolution is improved from previously-reported 9.8 mm to 4.0 mm.
Keywords :
Coherence; Frequency modulation; Light sources; Optical filters; Optical interferometry; Optical mixing; Optical modulation; Optical sensors; Phase modulation; Spatial resolution;
Conference_Titel :
Lasers and Electro-Optics (CLEO) and Quantum Electronics and Laser Science Conference (QELS), 2010 Conference on
Conference_Location :
San Jose, CA, USA
Print_ISBN :
978-1-55752-890-2
Electronic_ISBN :
978-1-55752-890-2
