Results 1 to 10 of about 663 (132)

Few-mode erbium-doped fiber amplifier with photonic lantern for pump spatial mode control

Optics Letters, 2016
We demonstrate a few-mode erbium-doped fiber amplifier employing a mode-selective photonic lantern for controlling the modal content of the pump light. Amplification of six spatial modes in a 5 m long erbium-doped fiber to ∼6.2  dBm average power is obtained while maintaining high modal fidelity.
Jorge Rodriguez-Asomoza, Chigo Okonkwo, G Lopez-Galmiche   +2 more
exaly   +4 more sources

Gain Dynamics of Few-Mode Erbium-Doped Fiber Amplifier

IEEE Photonics Technology Letters
IEEE Photonics Technology Letters.
Makoto Yamada, Hirotaka Ono
exaly   +3 more sources

Gain Equalization for Few-Mode Erbium-Doped Fiber Amplifiers via Strong Mode Coupling [PDF]

Applied Sciences, 2022
Few-mode erbium-doped fiber amplifiers (FM-EDFAs) are one of the most important optical subsystems for successful space division multiplexed transmission systems. In this paper, we propose a new FM-EDFA designed to achieve significantly reduced differential modal gain (DMG) via strong mode coupling. Using a new numerical model based on a fiber transfer
Yaping Liu, Zhiqun Yang, Xutao Wang, Yongmin Jung, Lin Zhang   +4 more
openaire   +4 more sources

Few-mode erbium-doped fiber amplifier based on a multi-inclusions core optical fiber

Optics Express, 2023
In this work, we demonstrate and evaluate a new design of micro-structured core erbium-doped few-mode fiber to be used as optical amplifier in the context of mode-division multiplexing. This concept is proposed so as to better control the distribution of the Er3+ ions in the core area, thus permitting to adjust the overall differential modal gains ...
Trinel, Jean-Baptiste, Yammine, Jean, Le Cocq, Guillaume, Bouwmans, Géraud, Andresen, Esben Ravn, Cassez, Andy, Plus, Stéphane, Quiquempois, Yves, Labroille, Guillaume, Bigot, Laurent   +9 more
openaire   +2 more sources

Optimization criteria and design of few-mode Erbium-doped fibers for cladding-pumped amplifiers

Optics Express, 2023
We propose a novel optimization method that combines two design criteria to reduce the differential modal gain (DMG) in few-mode cladding-pumped erbium-doped fiber amplifiers (FM-EDFAs). In addition to the standard criterion that considers the mode intensity and dopant profile overlap, we introduce a second criterion that ensures ...
Pierre-Olivier Janvier, Charles Matte-Breton, Kaboko Jean-Jacques Monga, Lixian Wang, Leslie Rusch, Sophie LaRochelle   +5 more
openaire   +2 more sources

The Impact of Fiber Core Ellipticity and Modal Coherency on Few Moded Erbium Doped Fiber Amplifiers [PDF]

39th European Conference and Exhibition on Optical Communication (ECOC 2013), 2013
We numerically demonstrate that the few moded erbium doped fiber amplifier models based on linearly polarized and vector modes are equivalent when the fiber core exhibits slight ellipticity and the signals in the guided modes are incoherent. These conditions are fulfilled in a practical mode division multiplexed system.
Lim, Ee Leong, Dasgupta, S., Kang, Qiongyue, Daniel, J.M.O., Poletti, F., Alam, S.-U., Richardson, David J.   +6 more
openaire   +1 more source

Experimental Measurement of Absorption Coefficients for Effective Erbium-Doping Concentration to Optimize Few-Mode Erbium-Doped Fiber Amplifiers with Low Differential Mode Gain [PDF]

Photonics, 2021
According to the analytical expression for modal gain of few-mode erbium-doped fiber amplifiers (FM-EDFAs), we propose a method of measuring the absorption loss coefficients of few-mode signals in few-mode erbium-doped fibers (FM-EDFs) by extrapolating the mode–gain curve dependent on the average population inversion. The absorption loss coefficient of
Xu, Yan, Wu, Baojian, Jiang, Xinrui, Guo, Haomiao, Wen, Feng   +4 more
openaire   +2 more sources

Few-mode Erbium-doped Fiber Amplifier

13th International Conference on Fiber Optics and Photonics, 2016
Few-mode fiber is emerging as an attractive option in an SDM system. EDFA for a few-mode fiber has an issue of differential modal gain (DMG) among its modes. We present EDFA designs to obtain customized DMG.
openaire   +2 more sources

2-LP mode few-mode fiber amplifier employing ring-core erbium-doped fiber

Optics Express, 2015
A fiber amplifier supporting 2 LP modes that employs a ring-core erbium-doped fiber (RC-EDF) is investigated to reduce differential modal gain (DMG). The inner and outer radii of the ring-core of the RC-EDF are clarified for 2-LP mode operation of the amplifier, and are optimized to reduce the DMG.
Hirotaka, Ono, Tsukasa, Hosokawa, Kentaro, Ichii, Shoichiro, Matsuo, Hitoshi, Nasu, Makoto, Yamada   +5 more
openaire   +2 more sources

Microgels Enable iPSCs to Assemble, Expand, and Differentiate Into Organoids—From Sizable to High‐Throughput

Advanced Materials, EarlyView.
A chemically defined PEG‐based microgel platform enables scalable, reproducible production of three‐dimensional microgel‐iPSC constructs in multiple sizes. The system is compatible with high‐throughput automation and supports human iPSC expansion and differentiation within a single construct, including directed differentiation into cardiac organoids ...
Laura Klasen, Matthias Mork, Ramin Nasehi, Vasudha Turuvekere Krishnamurthy, Kira Zeevaert, Aaron Babendreyer, Jacopo Di Russo, Wolfgang Wagner, Laura De Laporte   +8 more
wiley   +1 more source