A novel interrogation technique for fiber Bragg gratings is presented. It is based on measuring the characteristics of the outgoing near-field radiation from a tilted fiber grating. This scheme was experimentally checked and was found to offer a wide wavelength interrogation range as well as a good linearity, stability, and wavelength resolution.
© 2004 Optical Society of America
(050.0050) Diffraction and gratings : Diffraction and gratings
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(250.0250) Optoelectronics : Optoelectronics
(280.0280) Remote sensing and sensors : Remote sensing and sensors
César Jáuregui, Antonio Quintela, and José Miguel López-Higuera, "Interrogation unit for fiber Bragg grating sensors that uses a slanted fiber grating," Opt. Lett. 29, 676-678 (2004)