Microbending optical fiber sensors and their applications

L Xuejin, D Yuanlong, Y Yongqin, W Xinyi… - Proceedings of the 2008 …, 2008 - dl.acm.org
Microbending optical fiber sensors based on bend-induced loss in optical fiber have proved
themselves useful for detecting environmental changes. Many different mechanical …

Optical fiber strain sensor with extended dynamic range based on specklegrams

L Rodriguez-Cobo, M Lomer, A Cobo… - Sensors and Actuators A …, 2013 - Elsevier
In this paper, a processing scheme based on the morphological similarities of speckle
patterns is proposed to extend the dynamic range of Fiber Specklegram Sensors (FSS). The …

Specklegram in a multiple-mode fiber and its dependence on longitudinal modes of the laser source

J Li, H Cai, J Geng, R Qu, Z Fang - Applied optics, 2007 - opg.optica.org
A specklegram in a multimode fiber (MMF) has successfully been used as a sensor for
detecting external disturbance. Our experiments showed that the sensitivity in the sensor …

Multi-channel measurement for hetero-core optical fiber sensor by using CMOS camera

Y Koyama, M Nishiyama… - Fifth Asia-Pacific Optical …, 2015 - spiedigitallibrary.org
Fiber optic smart structures have been developed over several decades by the recent fiber
optic sensor technology. Optical intensity-based sensors, which use LD or LEDs, can be …

Measuring the optical path length of a plastic optical fibre using the sing-around method and its sensor applications

K Nakamura, T Okada, S Ueha - Journal of Optics A: Pure and …, 2001 - iopscience.iop.org
An optical path length of a plastic multi-mode fibre was measured using a simple method for
the purpose of sensor use. A single optical pulse is launched from one end of a fibre, and …

Intrusion detection system based on speckle pattern analysis

A Dhall, JK Chhabra, NS Aulakh - Experimental Techniques, 2005 - Springer
Conclusions Buried fiber intrusion detection by calculating the changes in the spatial
distribution of energy in the output of a multimode optical fiber has been demonstrated. An …

Impact of distance between twin receiving fibers on sensitivity of the optical fiber displacement sensor

J Verkelis, A Baskys, L Nickelson - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
The impact of the distance between the receiving fibers on the sensitivity of the twin
receiving fiber displacement sensor based on the intensity modulation technique has been …

Reflection-based fiber specklegram sensor

L Rodriguez-Cobo, M Lomer… - … on Optical Fibre …, 2016 - spiedigitallibrary.org
In this paper, a Fiber Specklegram Sensor (FSS) based on Plastic Optical Fiber (POF) has
been proposed with a reflection-based configuration. A HeNe laser is launched through a …

A new technique for measuring a time-varying optical fiber strain

O OGAWA, M KAMIKATANO… - Optical Fiber Sensors, 1996 - opg.optica.org
A new technique for measuring a time-varying optical fiber strain Page 1 Frl-2 A New
Technique for Measuring a time-varying Optical Fiber Strain Osamu OGAWA”, Mitsuru …

Effect of wavelength on metrological characteristics of non-holographic fiber specklegram sensor

VH Aristizabal, A Hoyos, E Rueda, ND Gomez… - Photonic Sensors, 2015 - Springer
In this paper, we report some results about the effects of varying the wavelength in a
structure of a non-holographic fiber specklegram sensor. In these arrangements, the speckle …