Results 61 to 70 of about 8,419 (298)

Programmable long-period grating in a liquid core optical fiber [PDF]

Optics Letters, 2016
A programmable fiber long-period grating (LPG) is experimentally demonstrated in a liquid core optical fiber with a low insertion loss. The LPG is dynamically formed by a temperature gradient in real time through a micro-heater array. The transmission spectrum of the LPG can be completely reconfigured by digitally changing the grating period, index ...
Qi, Tao, Jung, Yongmin, Xiao, Limin, Wang, Jie, Xiao, Shilin, Lu, Chao, Tam, Hwa-Yaw, Peacock, Anna C.   +7 more
openaire   +3 more sources

Properties of length-apodized phase-shifted lpgs operating at the phase matching turning point

, 2012
The characteristics of length-apodized phase-shifted fiber optic long period gratings with full and partial nanostructured coatings have been explored theoretically and experimentally.
Tatam, Ralph P., James, Stephen W., Topliss, Stephen M.   +2 more
core   +1 more source

A polarisation maintaining fibre Bragg grating interrogation system for multi- axis strain sensing [PDF]

, 2002
Fibre Bragg gratings (FBGs) written into polarisation maintaining (PM) fibres have been employed for multi-axis strain and temperature sensing. In this paper we report the development of a FBG interrogation system that is capable of detecting ...
Steven E. Staines, Staines, Stephen E., Ye, Chen-Chun, Ralph P. Tatam, Tatam, Ralph P., Chen-Chun Ye, James, Stephen W., Stephen W. James   +7 more
core   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

Fabrication of rGO-GO Long Period Fiber Grating Using Laser Reduction Method

IEEE Photonics Journal, 2017
A laser-reduction technique is investigated to fabricate a novel long period fiber grating (LPFG), whose period is a section of graphene oxide (GO) and reduced graphene oxide (rGO) films on a side polished fiber.
Liheng Chen, Jianhui Yu, Heyuan Guan, Tingting Zhan, Tianjie Rong, Yujia Kong, Wenguo Zhu, Huihui Lu, Jun Zhang, Zhe Chen   +9 more
doaj   +1 more source

Multi-component strain development in superconducting magnet coils monitored using fibre Bragg grating sensors fabricated in highly linearly birefringent fibre [PDF]

, 2011
The commissioning of superconducting magnet coils was monitored using embedded optical fibre Bragg grating sensors (FBG) fabricated in highly linearly birefringent (HiBi) fibre.
Adam Johnstone, Stephen J Buggy, James, Stephen W., M’hamed Lakrimi, Andrew Twin, Twin, Andrew, Ralph P Tatam, Domptail, Fred, Lakrimi, M’hamed, Tatam, Ralph P., Stephen W James, Chehura, Edmon, Johnstone, Adam, Buggy, Stephen J., Edmon Chehura, Fred Domptail   +15 more
core   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Long period grating resonances in photonic bandgap fiber

Optics Express, 2006
We demonstrate the formation of stress-induced long period gratings (LPGs) in fluid-filled photonic bandgap fiber (PBGF). Based on our experimental results, simulations, and theoretical understanding of LPGs, we identify coupling to a guided LP(11)-like mode of the core and lossy LP1x-like modes of cladding microstructure for a single grating period ...
P, Steinvurzel, E D, Moore, E C, Mägi, B T, Kuhlmey, B J, Eggleton   +4 more
openaire   +2 more sources

A comparative study of the performance of seven- and 63-chip optical code-division multiple-access encoders and decoders based on superstructured fiber Bragg gratings [PDF]

, 2001
We report a range of elementary optical coding and decoding experiments employing superstructured fiber Bragg grating (SSFBG) components: first, we perform a comparative study of the relative merits of bipolar and unipolar coding: decoding schemes and ...
Teh, Peh Chiong, Ibsen, M., Petropoulos, P., Richardson, D.J.   +3 more
core   +1 more source

Liquid Metal‐Based Stretchable Strain Sensor for Fruit Growth Monitoring

Advanced Materials Technologies, EarlyView.
Schematic overview of the fruit growth sensor development workflow, including sensor fabrication by injection molding, electromechanical and environmental characterization, mechanical stability testing, electronic readout integration, and outdoor field validation for monitoring of fruit growth under practical orchard conditions.
Asad Ullah, Lennert Purnal, Maximilian Krack, Sander Vijgen, Thijs Vandenryt, Dieter Reenaers, Ronald Thoelen, Wim Deferme   +7 more
wiley   +1 more source