Results 51 to 60 of about 123,133 (293)

Analysis of Optical Integration between Si₃N₄ Waveguide and a Ge-Based Optical Modulator Using a Lateral Amorphous GeSi Taper at the Telecommunication Wavelength of 1.55 µm

Applied Sciences, 2019
We report on the theoretical investigation of using an amorphous Ge0.83Si0.17 lateral taper to enable a low-loss small-footprint optical coupling between a Si3N4 waveguide and a low-voltage Ge-based Franz−Keldysh optical modulator on a bulk Si ...
Worawat Traiwattanapong, Kazumi Wada, Papichaya Chaisakul   +2 more
doaj   +1 more source

Optimization of optical data transmitters for 40-Gb/s lightwave systems using frequency resolved optical gating [PDF]

, 2002
The measurement technique of frequency resolved optical gating has been used to optimize the phase of a 40-GHz train of optical pulses generated using a continuous-wave laser gated with an external modulator. This technique will be vital for optimization
Barry, Liam P., del Burgo, S., Harvey, John D., Reid, Douglas A., Thomsen, Benn C., Watts, Regan T.   +5 more
core   +1 more source

The planar cell polarity protein Vangl2 interacts with the PDZ‐domains of Scribble but not with a unique PDZ‐like domain in Inturned

FEBS Letters, EarlyView.
Structural and biochemical characterisations show that the planar cell polarity (PCP) protein Inturned harbours a unique PDZ‐like domain that does not bind canonical PDZ‐binding motifs (PBMs) like that of another PCP protein Vangl2. In contrast, the apical‐basal polarity protein Scribble contains four PDZ domains that bind Vangl2, but one PDZ domain ...
Stephan Wilmes, Jan Brysch, Carmen Gelze, Lilli Meier, Daniel Kümmel   +4 more
wiley   +1 more source

Y-branch optical modulator [PDF]

SPIE Proceedings, 1991
To characterize z-cut Ti:lithium niobate Y-branch optical modulators, numerical simulations are performed showing that high on/off ratios are attainable without special Y-junction asymmetries or long electrodes. The effective index and 2-D finite difference beam propagation methods were used for the simulations. A modulator with a 2 deg.
Jaeger, Nicolas A. F., Lai, Winnie C.
openaire   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

Nonlinear optical response of thermally stable perovskite for near-infrared optical modulator

Journal of Materiomics
Metal halide perovskite has generated significant attention due to its high optical absorption coefficient, the tunability of bandgap, and its solution processing properties, all of which have led to a range of applications including solar cells ...
Jiang Wang, Liang Xie, Jingjing Liu, Yuxuan Sun, Jinglong Xu, Jiacheng Li, Zhongying Zhang, Chengbing Qin, Liantuan Xiao, Guofeng Zhang, Yonggang Wang, Zhichun Yang, Guanghua Cheng   +12 more
doaj   +1 more source

Retrodirective optical system [PDF]

, 1969
Fabry-Perot interferometer retrodirective reflector modulator for optical ...
Minott, P. O.
core   +1 more source

Compact thermally tunable silicon racetrack modulators based on an asymmetric waveguide [PDF]

, 2013
A compact wavelength-tunable 10-Gb/s silicon racetrack modulator with integrated thermo-optic heater is demonstrated by using a waveguide with an asymmetric cross section, combining the compact footprint of microdisk modulators with the design simplicity
Absil, P, Baets, Roel, Bogaerts, Wim, Dwivedi, Sarvagya, Lepage, G, Pantouvaki, M, Van Campenhout, J, Verheyen, P, Yu, Hui   +8 more
core   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Integrated silicon carbide electro-optic modulator

Nature Communications, 2022
Electro-optic modulator is used to encode electrical signals onto light. Here the authors demonstrate an electro-optic modulator, based on Silicon Carbide, which can be useful for quantum and optical communications.
Keith Powell, Liwei Li, Amirhassan Shams-Ansari, Jianfu Wang, Debin Meng, Neil Sinclair, Jiangdong Deng, Marko Lončar, Xiaoke Yi   +8 more
doaj   +1 more source