We propose a core-offset small core diameter dispersion compensation fiber (DCF) interferometer and investigate its applications in fiber sensors. If the transverse force is applied to a short section of the DCF, there is almost no crosstalk on the transmission spectrum between the extinction ratio variation induced by the transverse force and the wavelength shift caused by the longitudinal strain or ambient temperature, which can be applied to measure both transverse and longitudinal strain, or both transverse strain and temperature, simultaneously. The proposed sensors have the advantages of low cost, simple and compact structure, and good reproducibility.
© 2009 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: February 24, 2009
Revised Manuscript: July 9, 2009
Manuscript Accepted: July 27, 2009
Published: August 4, 2009
Bo Dong, Li Wei, Da-Peng Zhou, Wing-Ki Liu, and John W. Y. Lit, "Core-offset small-core-diameter dispersion compensation fiber interferometer and its applications in fiber sensors," Appl. Opt. 48, 4577-4581 (2009)