Results 91 to 100 of about 45,931 (274)

Multi-Stress Monitoring System with Fiber-Optic Mandrels and Fiber Bragg Grating Sensors in a Sagnac Loop

Sensors, 2015
Fiber Bragg grating sensors are placed in a fiber-optic Sagnac loop to combine the grating temperature sensors and the fiber-optic mandrel acoustic emission sensors in single optical circuit.
Hyunjin Kim, Umesh Sampath, Minho Song
doaj   +1 more source

Towards Neural‐Network‐Based Optical Temperature Sensing of Semiconductor Membrane External Cavity Laser

Advanced Sensor Research, EarlyView.
Neural‐network‐based (NN) temperature sensing: Machine‐learning non‐contact method for the determination of the temperature of a laser gain medium via its laser emission with few‐layer neural net (NN) regression model. Training the feed‐forward NN with data recorded by compact micro‐spectrometers for both a diode pump laser and optically‐pumped gain ...
Jakob Mannstadt, Arash Rahimi‐Iman
wiley   +1 more source

Taper Embedded Phase-Shifted Fiber Bragg Grating Fabricated by Femtosecond Laser Line-by-Line Inscription

IEEE Photonics Journal, 2018
We demonstrate a phase-shifted fiber Bragg grating with a taper induced by femtosecond laser micromachining. In this configuration, a fiber taper fabricated by an arc discharge in a fiber splicer was sandwiched between two fiber Bragg grating sections ...
Feng Zhu, Zhe Zhang, Changrui Liao, Ying Wang, Lei Xu, Jun He, Chao Wang, Zhengyong Li, Tianhang Yang, Yiping Wang   +9 more
doaj   +1 more source

Colorimetric Sensors with Enhanced Sensitivity and Angle‐independence

Advanced Sensor Research, EarlyView.
This review discusses various approaches, including the use of photonic crystals and colloidal photonic crystals as structural materials, and surface plasmon resonance as a light manipulation mechanism, to improve the sensitivity of colorimetric sensors.
Hiu Ning Tiffany Chui, Shu Yang
wiley   +1 more source

Dual Measurements of Pressure and Temperature With Fiber Bragg Grating Sensor

Al-Khawarizmi Engineering Journal, 2015
The fiber Bragg grating (FBG) technology has been rapidly applied in the sensing technology field. In this work, uniform FBG was used as pressure sensor based on measuring related Bragg wavelength shift.
Tahreer S. Mansour, Fahad M. Abdulhussein   +1 more
doaj  

Optical Gaussian Notch Filter Based on Periodic Microbent Fiber Bragg Grating

IEEE Photonics Journal, 2014
In this paper, we demonstrated an optical notch filter constructed from a periodic microbent fiber Bragg grating attained by using two copper-wire-wound slabs.
M. M. Ali, K. S. Lim, A. Becir, M. H. Lai, H. Ahmad   +4 more
doaj   +1 more source

Evaluate the Performance of Optical Cross Connect Based on Fiber Bragg Grating under Different Bit Rate [PDF]

arXiv, 2012
In wavelength division multiplexed (WDM) optical networks, intraband and/or interband crosstalk plays a major role in limiting practical implementation of an OXC subsystem. Again FIBER BRAGG GRATINGS (FBGs), due to their properties, are emerging as very important elements for both the optical fiber communication and sensing fields.
arxiv  

Giant Modulation of Interlayer Coupling in Twisted Bilayer ReS2

Advanced Science, EarlyView.
Twist angle in stacked bilayer ReS2 can modulate 30% of interlayer coupling and the whole range of exciton energy between 1L and 2L ReS2. Abstract Stacking monolayers of two‐dimensional (2D) transition metal dichalcogenides with different twist angles can provide a way to tune their quantum optical and electronic characteristics.
Krishna P. Dhakal, Trang Thu Tran, Taegeon Lee, Wooseon Choi, Sean F. Peterson, Juan M. Marmolejo‐Tejada, Jaeuk Bahng, Daekwon Lee, Vu Khac Dat, Ji‐Hee Kim, Seong Chu Lim, Martín A. Mosquera, Young‐Min Kim, Heesuk Rho, Jeongyong Kim   +14 more
wiley   +1 more source

Performance analysis of peak tracking techniques for fiber Bragg grating interrogation systems

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
In this paper, we propose a spectral correlation-based technique for tracking the wavelength shift of a fiber Bragg grating. We compared this approach, by means of a Monte Carlo numerical simulation, to the typical peak tracking techniques applied in ...
Daniele Tosi, Massimo Olivero, Guido Perrone   +2 more
doaj   +1 more source

Airborne Distributed Position and Orientation System Transfer Alignment Method Based on Fiber Bragg Grating

Sensors, 2020
With the demand for high resolution remote sensing, load array technology has gradually become an effective measure to improve imaging resolution. However, the external flow and internal engine vibration disturbance may lead to the flexible deformation ...
Wen Ye, Bin Gu, Yun Wang
doaj   +1 more source