7 February 2006 Parameters analysis of few-modes optical fiber evanescent absorption sensor
Author Affiliations +
Proceedings Volume 6032, ICO20: MEMS, MOEMS, and NEMS; 603208 (2006) https://doi.org/10.1117/12.667852
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China
Abstract
An evanescent wave sensor made of few modes optical fiber was studied. The influence of the geometry of the sensing region, including absorbing medium refractive index n2 and the core radius of the bare fiber a, on the modal fractional power in the cladding was analyzed. The percentage of the mode power in total guiding power was mainly calculated at different launching conditions, such as the incidence angle θi By analyzing the output power fraction from calculation and the experiment, the suitable parameters of the sensor could be chosen and the sensitivity was improved. The results will help the design in some way of this kind of sensor.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Xiaohong Deng, Yihui Wu, Feng Li, Lianqun Zhou, Xuan Ming, "Parameters analysis of few-modes optical fiber evanescent absorption sensor", Proc. SPIE 6032, ICO20: MEMS, MOEMS, and NEMS, 603208 (7 February 2006); doi: 10.1117/12.667852; https://doi.org/10.1117/12.667852
PROCEEDINGS
6 PAGES


SHARE
Back to Top