Results 51 to 60 of about 90,037 (273)

Practical method for modelling the nonlinear behaviour of a travelling wave semiconductor optical amplifier [PDF]

, 1993
The authors present a simple model of a travelling wave semiconductor optical amplifier with an appreciable degree of saturation. The model uses a particular way of linearising the total carrier recombination R(N) to find useful expressions for the ...
Guitart Felip, Jorge, Ruiz Moreno, Sergio   +1 more
core   +2 more sources

Hippo pathway at the crossroads of stemness and therapeutic resistance in breast cancer

Molecular Oncology, EarlyView.
Dysregulation of the Hippo pathway drives nuclear accumulation of YAP/TAZ, activating stemness‐related transcriptional programs that sustain breast cancer stemness and fuel therapeutic resistance across subtypes, underscoring Hippo signaling as a targetable vulnerability. Figure created and edited with BioRender.com.
Giulia Schiavoni, Antonella Palmese, Stefano Scalera, Laura Cipriani, Davide Mascolo, Patrizia Vici, Teresa Arcuri, Lorena Filomeno, Eriseld Krasniqi, Giovanni Blandino, Giulia Bon, Marcello Maugeri‐Saccà   +11 more
wiley   +1 more source

Low-Polarization, Broad-Spectrum Semiconductor Optical Amplifiers

Nanomaterials
Polarization-insensitive semiconductor optical amplifiers (SOAs) in all-optical networks can improve the signal-light quality and transmission rate. Herein, to reduce the gain sensitivity to polarization, a multi-quantum-well SOA in the 1550 nm band is ...
Meng Zhang, Tianyi Zhang, Hui Tang, Lei Liang, Yongyi Chen, Li Qin, Yue Song, Yuxin Lei, Peng Jia, Yubing Wang, Cheng Qiu, Yuntao Cao, Yongqiang Ning, Lijun Wang   +13 more
doaj   +1 more source

Measurement and Analysis of Temperature-Dependent Optical Modal Gain in Single-Layer InAs/InP(100) Quantum-Dot Amplifiers in the 1.6- to 1.8-$\mu\hbox{m}$ Wavelength Range

IEEE Photonics Journal, 2012
In this paper, measurements and analysis of the small-signal net modal gain of single-layer InAs/InP(100) quantum-dot (QD) optical amplifiers are presented. The amplifiers use only a single layer of InAs QDs on top of a thin InAs quantum well.
Y. Jiao, P. J. van Veldhoven, E. Smalbrugge, M. K. Smit, S. He, E. A. J. M. Bente   +5 more
doaj   +1 more source

Fast synchronization 3R burst-mode receivers for passive optical networks [PDF]

, 2014
This paper gives a tutorial overview on high speed burst-mode receiver (BM-RX) requirements, specific for time division multiplexing passive optical networks, and design issues of such BM-RXs as well as their advanced design techniques. It focuses on how
Bauwelinck, Johan, Moeneclaey, Bart, Qiu, Xing-Zhi, Torfs, Guy, Van Praet, Christophe, Vandewege, Jan, Verbrugghe, Jochen, Vyncke, Arno, Yin, Xin   +8 more
core   +2 more sources

Deciphering transcriptional plasticity in pancreatic ductal adenocarcinoma reveals alterations in sensory neuron innervation

Molecular Oncology, EarlyView.
Pancreatic sensory neurons innervating healthy and PDAC tissue were retrogradely labeled and profiled by single‐cell RNA sequencing. Tumor‐associated innervation showed a dominant neurofilament‐positive subtype, altered mitochondrial gene signatures, and reduced non‐peptidergic neurons.
Elena Genova, Michele Montrone, Uday Rangaswamy, Francesco Diversi, Irene Schiavo, Denise Ferrarini, Roberta Di Florio, Irene Longo, Michele Coscia, Nicola Zamboni, Giorgia Demontis, Lisa Veghini, Vincenzo Corbo, Remo Sanges, Paul Heppenstall   +14 more
wiley   +1 more source

E-band telecom-compatible 40 dB gain high-power bismuth-doped fiber amplifier with record power conversion efficiency

APL Photonics
Multi-band transmission is one of the key practical solutions to cope with the continuously growing demand on the capacity of optical communication networks without changing the huge existing fiber base.
Aleksandr Donodin, Egor Manuylovich, Vladislav Dvoyrin, Mikhail Melkumov, Valery Mashinsky, Sergei Turitsyn   +5 more
doaj   +1 more source

Gain Characteristics of Hybrid Waveguide Amplifiers in SiN Photonics Integration with Er-Yb:Al₂O₃ Thin Film

Photonics
Integrated optical waveguide amplifiers, with their compact footprint, low power consumption, and scalability, are the basis for optical communications. The realization of high gain in such integrated devices is made more challenging by the tight optical
Ziming Dong, Guoqing Sun, Yuqing Zhao, Yaxin Wang, Lei Ding, Liqin Tang, Yigang Li   +6 more
doaj   +1 more source

Wavelength conversion for WDM communication systems using four-wavemixing in semiconductor optical amplifiers [PDF]

, 1997
Four-wave mixing (FWM) in semiconductor optical amplifiers is an attractive mechanism for wavelength conversion in wavelength-division multiplexed (WDM) systems since it provides modulation format and bit rate transparency over wide tuning ranges.
Geraghty, David F., Lee, Robert B., Mathur, Atul, Vahala, Kerry J., Verdiell, Marc, Ziari, Mehrdad   +5 more
core   +1 more source

NKCC1: A key regulator of glioblastoma progression

Molecular Oncology, EarlyView.
Glioblastoma (GBM) progression is driven by disrupted chloride cotransporter homeostasis. NKCC1 is highly expressed in stem‐like, astrocytic, and progenitor cells, correlating with earlier recurrence, while overall survival remains unaffected. NKCC1 serves as a prognostic marker and potential therapeutic target, linking chloride transporter imbalance ...
Anja Thomsen, Diana Freitag, Madlen Haase, Christian Senft, Falko Schwarz, Silke Keiner   +5 more
wiley   +1 more source