Next Article in Journal
Next Article in Special Issue
Previous Article in Journal
Sensors 2011, 11(3), 2488-2495; doi:10.3390/s110302488
Article

A Transflective Nano-Wire Grid Polarizer Based Fiber-Optic Sensor

,
,
,
,
 and *
Received: 9 January 2011; in revised form: 27 January 2011 / Accepted: 17 February 2011 / Published: 28 February 2011
(This article belongs to the Special Issue Metamaterials for Sensing)
View Full-Text   |   Download PDF [322 KB, updated 21 June 2014; original version uploaded 21 June 2014]   |   Browse Figures
Abstract: A transflective nano-wire grid polarizer is fabricated on a single mode fiber tip by focused ion beam machining. In contrast to conventional absorptive in-line polarizers, the wire grids reflect TE-mode, while transmitting TM-mode light so that no light power is discarded. A reflection contrast of 13.7 dB and a transmission contrast of 4.9 dB are achieved in the 1,550 nm telecom band using a 200-nm wire grid fiber polarizer. With the help of an optic circulator, the polarization states of both the transmissive and reflective lights in the fiber may be monitored simultaneously. A kind of robust fiber optic sensor is thus proposed that could withstand light power variations. To verify the idea, a fiber pressure sensor with the sensitivity of 0.24 rad/N is demonstrated. The corresponding stress-optic coefficient of the fiber is measured. In addition to pressure sensing, this technology could be applied in detecting any polarization state change induced by magnetic fields, electric currents and so on.
Keywords: subwavelength structures; fiber optics sensors; pressure measurement; polarization-selective devices subwavelength structures; fiber optics sensors; pressure measurement; polarization-selective devices
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Export to BibTeX |
EndNote


MDPI and ACS Style

Feng, J.; Zhao, Y.; Lin, X.-W.; Hu, W.; Xu, F.; Lu, Y.-Q. A Transflective Nano-Wire Grid Polarizer Based Fiber-Optic Sensor. Sensors 2011, 11, 2488-2495.

AMA Style

Feng J, Zhao Y, Lin X-W, Hu W, Xu F, Lu Y-Q. A Transflective Nano-Wire Grid Polarizer Based Fiber-Optic Sensor. Sensors. 2011; 11(3):2488-2495.

Chicago/Turabian Style

Feng, Jing; Zhao, Yun; Lin, Xiao-Wen; Hu, Wei; Xu, Fei; Lu, Yan-Qing. 2011. "A Transflective Nano-Wire Grid Polarizer Based Fiber-Optic Sensor." Sensors 11, no. 3: 2488-2495.



Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert