Results 51 to 60 of about 25,004 (226)

Demonstration of an erbium doped microdisk laser on a silicon chip [PDF]

, 2006
An erbium doped micro-laser is demonstrated utilizing $\mathrm{SiO_{2}}$ microdisk resonators on a silicon chip. Passive microdisk resonators exhibit whispering gallery type (WGM) modes with intrinsic optical quality factors of up to $6\times{10^{7 ...
A. Polman, J. Kalkman, K. J. Vahala, T. J. Kippenberg, V. B. Braginskii   +4 more
core   +2 more sources

Spatial‐Wavelength Multiplexing Error‐Controlled Photonic Analog Computing System

Advanced Science, EarlyView.
A novel photonic integrated circuit prototype implementing the concept of general‐purpose analog computing and demonstrate its capability in radio frequency applications. The chip features a multichannel architecture and performs fully optical analog computation with frequency‐domain parallel processing. An FPGA‐based error‐correction algorithm aims to
Tao Zhu, Bowen Zhu, Shicheng Zhang, Keren Li, Xianchen Wu, Yazhi Pi, Jie Yan, Daigao Chen, Bingli Guo, Xi Xiao, Lei Wang, Xiaochuan Xu, Xuwei Xue, Shanguo Huang, Zizheng Cao, Shaohua Yu   +15 more
wiley   +1 more source

High fiber-to-fiber net gain in erbium-doped thin film lithium niobate waveguide amplifier as an external gain chip

Opto-Electronic Science
Miniaturized erbium-doped waveguide amplifiers attracted great interests in recent decades due to their high gain-efficiency and function-scalability in the telecom C-band.
Jinli Han, Mengqi Li, Rongbo Wu, Jianping Yu, Lang Gao, Zhiwei Fang, Min Wang, Youting Liang, Haisu Zhang, Ya Cheng   +9 more
doaj   +1 more source

A Comparative Study of Thermal Impact on Erbium Doped Distributed Feedback Fiber Laser Output Power

IEEE Photonics Journal, 2020
The temperature dependency of erbium doped distributed feedback fiber laser output performance is experimentally and theoretically investigated with two major pump schemes.
Jian Guo, Haifeng Qi, Zhiqiang Song, Jiasheng Ni, Chang Wang, Weitao Wang, Gangding Peng   +6 more
doaj   +1 more source

Impact of Intracavity Power Variations toward Ultrashort Pulse Generation

Applied Sciences, 2023
This study demonstrates a passive mode-locked erbium-doped fiber laser with a graphene nanoplatelet-saturable absorber (GNP-SA) that generates ultrashort pulses within femtosecond pulse duration. The GNP-SA is fabricated via a direct transfer approach by
Ahmad Fauzi Abas, Kuen Yao Lau, Yahya Mohammed Al-Moliki, Yosef Taher Aladadi, Mohammed Thamer Alresheedi, Mohd Adzir Mahdi   +5 more
doaj   +1 more source

All fiber, low threshold, widely tunable single-frequency, erbium-doped fiber ring laser with a tandem fiber Fabry–Perot filter [PDF]

, 1991
An all fiber, widely tunable, single-frequency, erbium-doped fiber ring laser was constructed with a threshold pump power as low as 10 mW. Tuning over more than 30 nm was obtained by applying 0 to 17 dc V to an intracavity fiber Fabry–Perot filter ...
Dawson, Jay W., Miller, Calvin, Park, Namkyoo, Vahala, Kerry J.   +3 more
core   +1 more source

Single‐Cell Atlas of Subchondral Bone Marrow Lesions Reveals Proteostasis Dysfunction as a Druggable Mechanism for Early Osteoarthritis

Advanced Science, EarlyView.
This study reveals that abnormal mechanical stress downregulates the expression of HSP70 and impairs proteasome function in osteoarthritic bone cells, leading to misfolded collagen I accumulation and ER stress. When intracellular proteostasis capacity is exceeded, USP19 mediates the secretion of misfolded proteins into the extracellular space ...
Hailun Xu, Ting He, Yu Qian, Jia Li, Bowei Ni, Xiaojie Xu, Huanbo Wang, Peng Wang, Guoqing Cao, Siqi Ying, Guangyu Ding, Rong Wang, Zenghui Gu, Wei Li, Zhentao Man, Houfeng Zheng, Zhaohua Zhu, Zhen Li, Qingjun Meng, Chao Zheng, Liu Yang   +20 more
wiley   +1 more source

Wavelength Switchable Mode-Locked Fiber Laser With Tapered Two-Mode Fiber

IEEE Photonics Journal, 2019
We propose and demonstrate a wavelength switchable mode-locked Erbium-doped fiber laser with carbon nanotubes for mode-locking and a tapered two-mode fiber (TTMF) based filter for wavelength selection.
Liqin Xie, Fang Fang, Bing Sun, Mengmeng Chen, Zuxing Zhang   +4 more
doaj   +1 more source

Large energy soliton erbium-doped fiber laser with a graphene-polymer composite mode locker

, 2009
Due to its unique electronic property and the Pauli Blocking Principle, atomic layer graphene possesses wavelength-independent ultrafast saturable absorption, which can be exploited for the ultrafast photonics application.
Bao, Qiaoliang, Loh, Kianping, Tang, Dingyuan, Zhang, Han, Zhao, Luming   +4 more
core   +1 more source

Erbium Doped Fiber Optic Gravimeter

Journal of Physics: Conference Series, 2017
Gravimeters are devices that can be used in a wide range of applications, such as mining, seismology, geodesy, archeology, geophysics and many others. These devices have great sensibility, which makes them susceptible to external vibrations like electromagnetic waves.
G G Pérez-Sánchez, J R Pérez-Torres, J A Flores-Bravo, J A Álvarez-Chávez, F Martínez-Piñón   +4 more
openaire   +1 more source