Next Article in Journal
A Pattern Recognition Approach to Acoustic Emission Data Originating from Fatigue of Wind Turbine Blades
Next Article in Special Issue
Femtosecond FBG Written through the Coating for Sensing Applications
Previous Article in Journal
High-Accuracy Readout Electronics for Piezoresistive Tactile Sensors
Previous Article in Special Issue
High-Order Modes Micro-Knot Excited by a Long-Period Fiber Grating
Article Menu
Issue 11 (November) cover image

Export Article

Open AccessArticle
Sensors 2017, 17(11), 2508; doi:10.3390/s17112508

A Code Division Design Strategy for Multiplexing Fiber Bragg Grating Sensing Networks

Photonics Research Labs (PRL), Universitat Politècnica de València, 46022 Valencia, Spain
Electric and Electronics Department, Universidad Nacional de Colombia sede Bogotá, Bogotá D.C. 111321, Colombia
Author to whom correspondence should be addressed.
Received: 28 September 2017 / Revised: 24 October 2017 / Accepted: 31 October 2017 / Published: 1 November 2017
(This article belongs to the Special Issue Fiber Bragg Grating Based Sensors)
View Full-Text   |   Download PDF [1812 KB, uploaded 1 November 2017]   |  


In this paper, an encoding strategy is used to design specialized fiber Bragg grating (FBG) sensors. The encoding of each sensor requires two binary codewords to define the amplitude and phase patterns of each sensor. The combined pattern (amplitude and phase) makes each sensor unique and therefore two or more sensors can be identified under spectral overlapping. In this way, we add another dimension to the multiplexing of FBG sensors, obtaining an increase factor ‘n’ to enhance the number of sensors that the system can handle. A proof-of-concept scenario with three sensors was performed, including the manufacturing of the encoded sensors. Furthermore, an interrogation setup to detect the sensors central wavelength was proposed and its working principle was theoretically developed. Results show that total identification of the central wavelength is performed under spectral overlapping between the manufactured sensors, achieving a three-time improvement of the system capacity. Finally, the error due to overlapping between the sensors was assessed obtaining approximately 3 pm, which makes the approach suitable for use in real measurement systems. View Full-Text
Keywords: fiber Bragg grating; FBG; encoding; overlap proof; optical fiber sensor; sensing network fiber Bragg grating; FBG; encoding; overlap proof; optical fiber sensor; sensing network

Figure 1

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. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Triana, A.; Pastor, D.; Varón, M. A Code Division Design Strategy for Multiplexing Fiber Bragg Grating Sensing Networks. Sensors 2017, 17, 2508.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top