Kim, Chang-Seok Lee, Tae Ho Yu, Yun Sik Han, Young-Geun Lee, Sang Bae Jeong, Myung Yung 2024-01-21T02:31:03Z 2024-01-21T02:31:03Z 2021-09-01 2006-09-18 1094-4087 https://pubs.kist.re.kr/handle/201004/135119 A simple optical signal demodulation technique is demonstrated for multi-point interrogation of fiber Bragg grating sensors. The wavelength-division responses of polarization-maintaining fiber Sagnac loop filters are flexibly controlled to interrogate the simultaneous optical intensity changes from the independent wavelength shifts of multiple fiber Bragg grating sensors. Experimental performance is also demonstrated to show the simultaneous detection of the separated FBG sensing signals by individual photo detectors. (c) 2006 Optical Society of America. English OPTICAL SOC AMER FIBER TEMPERATURE Multi-point interrogation of FBG sensors using cascaded flexible wavelength-division Sagnac loop filters Article 10.1364/OE.14.008546 1 OPTICS EXPRESS, v.14, no.19, pp.8546 - 8551 OPTICS EXPRESS 14 19 8546 8551 scie scopus 000240638700009 2-s2.0-33748941093 Optics Optics Article FIBER TEMPERATURE Fiber optics sensors