Chinese Optics Letters, 2012, 10 (9): 090601, Published Online: Jul. 15, 2012
Refractive index sensor based on tapered PCF in-line interferometer Download: 809次
060.5295 Photonic crystal fibers 060.2370 Fiber optics sensors 120.3180 Interferometry 280.4788 Optical sensing and sensors
Abstract
A simple and compact refractive index sensor is demonstrated by tapering a photonic crystal fiber (PCF) in-line interferometer. The PCF is spliced between two single-mode fibers and tapered via hydrofluoric acid etching. Its sensitivity in liquid is more than an order of magnitude larger than the untapered one. By optimizing the etching process, we can fabricate more uniformly and thinly tapered PCF interferometers with higher sensitivity in the future.
Qi Liu, Qin Wang. Refractive index sensor based on tapered PCF in-line interferometer[J]. Chinese Optics Letters, 2012, 10(9): 090601.