Results 101 to 110 of about 9,072 (243)

Evanescent field sensing in novel flat fiber [PDF]

, 2008
Recently developed novel 'flat fiber' substrate promises flexible, long-haul integrated optical devices. Here, we present the first demonstration of one such device; an evanescent field sensor, based upon direct UV written Bragg ...
Gawith, C.B.E., A.S. Webb, P.G.R. Smith, C.B.E. Gawith, Holmes, C., F.R. Mahamd Adikan, Gates, J.C., Webb, A.S., J.K. Sahu, Payne, D.N., Smith, P.G.R., D.N. Payne, J.C. Gates, C. Holmes, Adikan, M.F.R., Sahu, J.K.   +15 more
core   +1 more source

Omnidirectional Shape Proprioception for Untethered Shape Memory Alloy‐Driven Soft Robotic Arms

Advanced Intelligent Systems, EarlyView.
A lightweight, modular soft robotic arm employs SMA actuation and a multi‐Hall‐magnet sensing system to achieve accurate omnidirectional shape proprioception. Each 35 g segment enables scalable assembly, while robust proprioception supports versatile navigation and manipulation in complex, unstructured environments.
Yiming Ouyang, Zelin Chen, He Chen, Min Xu, Hao Yang, Wei Gao, Hu Jin, Shiwu Zhang   +7 more
wiley   +1 more source

High-speed, solid state, interferometric interrogator and multiplexer for fiber Bragg grating sensors [PDF]

, 2011
We report on the design and prototyping of a robust high-speed interferometric multiplexer and interrogator for fiber Bragg grating sensors. The scheme is based on the combination of active WDM channel switching and passive, instantaneous interferometry,
Niewczas, Pawel, P. Orr, Orr, Philip, P. Niewczas   +3 more
core   +1 more source

Optimized Dual-Stokes Raman Laser for 1.1 µm Emission and Temperature Sensing

Photonics
This work experimentally validates an improved Raman fiber laser, developed through cascade core variation splicing of optical fibers and the integration of fiber Bragg gratings.
Jesus Alberto Coba-Ramos, Lelio de la Cruz May, Angeles Yolanda Pages-Pacheco, Efrain Mejia-Beltran, Daniel Jauregui-Vazquez, Manuel May-Alarcon, Rafael Sanchez-Lara, Jose Alfredo Alvarez Chavez   +7 more
doaj   +1 more source

Perimeter System Based on a Combination of a Mach-Zehnder Interferometer and the Bragg Gratings

Advances in Electrical and Electronic Engineering, 2016
Fiber optic interferometers and Bragg gratings belong to the group of very precise and sensitive devicesthat allow measuring very small deformation, temperature or vibration changes.
Marcel Fajkus, Jan Nedoma, Petr Siska, Lukas Bednarek, Stanislav Zabka, Vladimir Vasinek   +5 more
doaj   +1 more source

Toward Fully Soft and Multifunctional Shape Sensing via Optical Waveguide Arrays

Advanced Intelligent Systems, EarlyView.
This work develops a sheet made with arrays of soft optical fibers that can reconstruct its 3D surface shape. Synergy of the waveguides’ responses to bending and pressing force allows shape reconstruction with resilience to damage. Applied onto surfaces of robotic or living systems, our design can be implemented in virtual reality, teleoperation ...
Qifan Yu, Nina Cao, Kaitlyn Becker
wiley   +1 more source

All-optical 160 Gbit/s retiming system using fiber grating based pulse shaping technology [PDF]

, 2009
This paper demonstrates a retiming system operating at rates of 40 and 160 Gbit/s, which incorporates a superstructured fiber Bragg grating (SSFBG) as a pulse shaping element.
Galili, Michael, Ibsen, M., Petropoulos, P., Ibsen, Morten, Richardson, D.J., Richardson, David J., Zibar, Darko, Parmigiani, Francesca, Clausen, Anders, Petropoulos, Periklis, Oxenløwe, Leif Katsuo, Parmigiani, F., Clausen, Anders Thomas, Jeppesen, Palle   +13 more
core   +1 more source

Fluorene‐based blue emitters: On the path to electrically pumped organic lasers

FlexMat, EarlyView.
Electrically pumped efficient operation remains unrealized, a major challenge in optoelectronics. Fluorene‐based blue‐emitting semiconductors are promising gain media, thanks to their structural tunability and favorable emission properties. This review summarizes recent advances, highlights their reliability and versatility in lasing, and outlines key ...
Yong Yan, Hao Li, Mengna Yu, Huiyin Wang, Jiangqiang He, Menghan Wu, Quanyou Feng, Linghai Xie   +7 more
wiley   +1 more source

Locally pressed fibre Bragg grating pressure sensor [PDF]

, 2006
A spectral-hole created by locally pressing a fibre Bragg grating exhibited a wavelength-shift within the FBG bandwidth. A sensitivity of 74.3pm/(N/mm) was obtained for pressure applied along the slow axis of a high birefringence ...
Ricardo N. Correia, Ralph P. Tatam, Tatam, Ralph P., Chehura, Edmon, Correia, Ricardo N., James, Stephen W., Stephen W. James, Edmon Chehura   +7 more
core   +1 more source

Bio-Chemical Sensors Based on Excessively Tilted Fiber Grating

Photonic Sensors
Excessively tilted fiber gratings (ExTFGs) are a type of special optical fiber grating device different from traditional fiber Bragg gratings, long period fiber gratings, and tilted fiber Bragg gratings.
Fudan Chen, Hong Gu, Binbin Luo, Shenghui Shi   +3 more
doaj   +1 more source