Results 21 to 30 of about 4,321,838 (295)

Integrated Mach–Zehnder Interferometer Based on Liquid Crystal Evanescent Field Tuning

Crystals, 2019
In this work, the performance of a Mach−Zehnder interferometer manufactured in silicon nitride with a liquid crystal cladding is studied. The device consists of two multi-mode interference couplers linked by two rectangular waveguides, the cladding
Manuel Caño-García, David Poudereux, Fernando J. Gordo, Morten A. Geday, José M. Otón, Xabier Quintana   +5 more
doaj   +1 more source

MEMS Technology for Optical Switching

Walailak Journal of Science and Technology, 2012
Over the last ten years, microelectromechanical systems (MEMS) devices have received attention in many application areas such microwave, wireless, and optical networks. Especially in optical networks, MEMS technology is employed to provide the advantages
Kornkamol THAKULSUKANANT
doaj   +1 more source

Light Propagation in Confined Nematic Liquid Crystals and Device Applications

Applied Sciences, 2021
Liquid crystals are interesting linear and nonlinear optical materials used to make a wide variety of devices beyond flat panel displays. Liquid crystalline materials can be used either as core or as cladding of switchable/reconfigurable waveguides with ...
Antonio d’Alessandro, Rita Asquini
doaj   +1 more source

LCoS-Based Wavelength-Selective Switch for Future Finer-Grid Elastic Optical Networks Capable of All-Optical Wavelength Conversion

IEEE Photonics Journal, 2017
A finer-grid wavelength-selective switch (WSS) based on liquid crystal on silicon is proposed, fabricated, and demonstrated. Based on the cost-effective method, namely combined lenses technique, the focal length is increased so that both the bandwidth ...
Dequan Xie, Danshi Wang, Min Zhang, Zichen Liu, Quan You, Qi Yang, Shaohua Yu   +6 more
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

Cost-based burst dropping strategy in optical burst switching networks [PDF]

, 2005
Optical burst switching (OBS) is a new paradigm for future all-optical networks. Intentional burst dropping is one of techniques used to achieve desired quality of service. In this paper we note that some bursts are more likely to cause contention.
Barry, Liam P., J. Murphy, Murphy, John, Klusek, Bartlomiej, L. Barry, B. Klusek   +5 more
core   +2 more sources

Artificial molecular machines and motors—Design and control of nanoscale motion

FEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Effects of crosstalk in WDM optical label switching networks due to wavelength switching of a tunable laser [PDF]

, 2006
rosstalk caused by switching events in fast tunable lasers in an optical label switching (OLS) system is investigated for the first time. A wavelength-division-multiplexed OLS system based on subcarrier multiplexed labels is presented which employs a 40 ...
Barry, Liam P., Smyth, Frank, Cotter, D., Ellis, A.D., Kaszubowska-Anandarajah, Aleksandra, Mishra, A.K., Connolly, Eoin M.   +6 more
core   +2 more sources

DESIGN AND ANALYSIS OF OPTICAL SWITCH FOR DATA CENTER NETWORKS INCORPORATING ACO-OFDM WITH PAPR REDUCTION [PDF]

Journal of Engineering Science and Technology, 2018
Currently optical data centers heavily rely on electronics for information transfer. In near future electronic switching will face problem in supporting higher data rates. Therefore, a slow migration from electronic to optical switching has been observed.
RAVI KUMAR, ANURAG TRIPATHI
doaj  

Broadband and ultrafast all-optical switching based on transition metal carbide

Nanophotonics, 2021
Ultrafast all-optical switches have attracted considerable attention for breaking through the speed limitation of electric devices. However, ultrafast and high-efficiency all-optical switches based on two-dimensional (2D) materials can be achieved due to
Wang Cong, Gao Lingfeng, Chen Hualong, Xu Yiquan, Ma Chunyang, Yao Haizi, Song Yufeng, Zhang Han   +7 more
doaj   +1 more source