Results 61 to 70 of about 106,274 (293)

Optical Fiber Amplifiers: Optimization and PerformanceEvaluation

Diyala Journal of Engineering Sciences, 2019
This work demonstrates the simulation of two different types of optical fiber amplifiers (OFA) utilizing OptiSystem–10, namely, 3 m length of erbium doped fiber amplifier (EDFA) and 7 km length of Raman fiber amplifier (RFA).
A. k. Abass, Mohammed J. Abdul-Razak, Haneen H. Mohammed, Suad M. Kadhim, Mohammed A. Salih   +4 more
doaj   +1 more source

Periodic and Quasi-Periodic Compensation Strategies of Extreme Outages caused by Polarization Mode Dispersion and Amplifier Noise

, 2003
Effect of birefringent disorder on the Bit Error Rate (BER) in an optical fiber telecommunication system subject to amplifier noise may lead to extreme outages, related to anomalously large values of BER. We analyze the Probability Distribution Function (
B. Huttner, C. D. Poole, E. Desurvire, F. Heismann, H. Bülow, I. Kolokolov, J. P. Gordon, M. Chertkov, T. Ono, V. Chernyak, V. Chernyak, V. Lebedev   +11 more
core   +2 more sources

2.49 GHz low phase-noise optoelectronic oscillator using 1.55μm VCSEL for avionics and aerospace applications [PDF]

, 2008
We present here a 1.55 μm single mode Vertical-Cavity Surface-Emitting Laser (VCSEL) based low phase-noise ring optoelectronic (OEO) oscillator operating at 2.49 GHz for aerospace, avionics and embedded systems applications.
Bacou, Alexandre, Hayat, Ahmad, Mollier, Jean-Claude, Rissons, Angélique, Varón-Durán, Margarita   +4 more
core   +1 more source

Engineered extracellular vesicles enriched with the miR‐214/199a cluster enhance the efficacy of chemotherapy in ovarian cancer

Molecular Oncology, EarlyView.
Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang, Ayesha Alvero, Yi Qin, Mingjin Wang, Alexandra Fox, Yanfeng Li, Michael Millman, Amy Kemper, Gil Mor, Xian Shuang Liu, Michael Chopp, Zheng Gang Zhang, Yi Zhang   +12 more
wiley   +1 more source

Multiwavelength fiber laser based on bidirectional lyot filter in conjunction with intensity dependent loss mechanism [PDF]

, 2018
We experimentally demonstrate a multiwavelength fiber laser (MWFL) based on bidirectional Lyot filter. A semiconductor optical amplifier (SOA) is used as the gain medium, while its combination with polarization controllers (PCs) and polarization beam ...
Abdul Hamid, Nur Jannah, Abdul Kadir, Aeslina, Hashim, Azini Amiza, Hassan, Mohd Ikhmal Haqeem, Hissham, Nur Fatin Nabila, Huda Hashar, Nurul Nabila, Md Din, Mohd Fadhil, S.M. Johan, Siti Farhanah, Sarani, Noor Amira   +8 more
core   +4 more sources

Fiber Raman Amplifiers.

The Review of Laser Engineering, 2001
This paper reviews recent progress in broadband Raman amplifiers for WDM applications. After discussing the fundamentals of Raman amplifiers, basic characteristics of multi-wavelength pumped Raman amplifiers are presented. The design procedure of multi-wavelength pumped Raman amplifiers is summarizedwith respect to the pumping wavelength and power ...
Yoshihiro EMORI, Shu NAMIKI
openaire   +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

$\hbox{Er}^{3+}$ and $\hbox{Ce}^{3+}$ Codoped Tellurite Optical Fiber for Lasers and Amplifiers in the Near-Infrared Wavelength Region: Fabrication, Optical Characterization, and Prospects

IEEE Photonics Journal, 2012
A tellurite optical fiber doped with Er3+ and Ce3+ ions was designed and fabricated with the aim of assessing its suitability as laser and optical amplifier operating at 1550 nm, compatible with silica fiber standard dimensions.
J. Lousteau, N. G. Boetti, A. Chiasera, M. Ferrari, S. Abrate, G. Scarciglia, A. Venturello, D. Milanese   +7 more
doaj   +1 more source

Theoretical Analysis of Heat Distribution in Raman Fiber Lasers and Amplifiers Employing Pure Passive Fiber

IEEE Photonics Journal, 2020
In this paper, we study the thermal dissipation of Raman fiber laser and amplifier utilizing pure passive fiber as gain medium for the first time. Take into account the convective and conductive heat transferring process in the fiber, we consider the ...
Yizhu Chen, Tianfu Yao, Hu Xiao, Jinyong Leng, Pu Zhou   +4 more
doaj   +1 more source

Multiphoton discrimination at telecom wavelength with charge integration photon detector

, 2005
We present a charge integration photon detector (CIPD) that enables the efficient measurement of photon number states at the telecom-fiber wavelengths with a quantum efficiency of 80% and a resolution less than 0.5 electrons at 1 Hz sampling.
Fujiwara, Mikio, Sasaki, Masahide
core   +1 more source