Intensity modulated sensor

In this case, the signal to be measured (the measurand), intensity. The envelope of the modulated optical signal is an analog of the modulating signal in the sense that the instantaneous power of . A range of published research work in sensor design for four different health monitoring applications, including, lumbar spine bending, upper and lower limb motion tracking, respiration and heart rate monitoring, are presented and discussed in terms of their respective advantages and limitations. Intensity modulated fibre optic sensors.

A light intensity modulation fiber-optic sensor , which can measure curvature directly, has been developed.

It is suitable for the measurement of thin, embedded or highly flexible structures.

An experimental analysis on the static and dynamic characteristics of sensor has been undertaken.

The show that the output . In contrast, the temperature cross-sensitivity and strain cross-sensitivity of the proposed torsion sensor are low to −2. The proposed system eliminates alignment issues otherwise associated with . An intensity - modulated magnetic field sensor based on magnetic fluid and optical fiber gratings is proposed and experimentally demonstrated. We use bimetal as sensing element.

This paper presents the use of variable fiber optic attenuator incorporated in intensity modulated fiber sensor configuration in which light is split into two arms: modulated and reference fiber arm. Doreen Lau, Zhihao Chen, Senior Member, IEEE, Ju Teng Teo, Soon Huat Ng, Helmut Rumpel,. Yong Lian, Fellow, IEEE, Hui Yang, and Pin Lin Kei. Due to variation characteristics of the refractive index and absorption coefficient of MF under different magnetic fields, an effective method to improve the sensitivity of SMS fiber structure is realized based on the intensity modulation method.

In this thesis new concepts and applications for intensity modulated fibre-optic sensors based on coupling . Jingyi Yang, Xinyong Dong, Kai Ni, Chi Chu Chan, and Perry Ping Shun. Using wavelet packet technology, the collected signals are analyze which confirms that an intensity - modulated DFB-FL sensor can be used to . Tracking on intensity - modulated sensor data streams. This scheme poses problems when tracking energy that is distributed across many . Compared with other types of optical fiber sensors , intensity- modulated sensors offer distinctive advantages in that they are usually less . Abstract: Conventional trackers are point trackers.

The sensor is constructed using single mode fiber (SMF) and multimode fiber (MMF) in SMF- MMF-SMF-MMF-SMF sequence. This is due to spontaneous response and ease in handling.