Bin Huang

Xidian University

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Nicolas K. Fontaine

Nokia (United States)

Roland Ryf

Nokia (United States)

Guifang Li

Northwestern Polytechnical University

Haoshuo Chen

Nokia (United States)

J.K. Tugnait

Auburn University

Cang Jin

Université Laval

Rodrigo Amezcua‐Correa

University of Central Florida

Pierre Sillard

Prysmian Group (Italy)

René-Jean Essiambre

Nokia (United States)

José Enrique Antonio-Lopez

University of Central Florida

Cooperative Institutions

University of Central Florida

Chinese Academy of Sciences

Nokia (United States)

Peking University

Tianjin University

University of Chinese Academy of Sciences

Beijing National Laboratory for Molecular Sciences

Tsinghua University

Shanghai Jiao Tong University

Huazhong University of Science and Technology

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Study on a high-efficiency low-voltage tunable terahertz gyrotron

2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz) (2015)

Li Luo Chao‐Hai Du Xiang-Bo Qi Zheng-Di Li Bin Huang

Summary form only given. In this paper, a low-voltage high-efficiency 330 GHz tunable gyrotron is investigated, which operates on the open-cavity TE _6,2 mode and employs an electron beam with voltage of 20 kV, current of 0.5A, and pitch factor of 1.5. Simulation achieves a competitive efficiency, more than 40%, under the assumption of using copper circuit wall and electron beam of 5% velocity spread. Besides, the investigation of the start-oscillation currents of the TE _6,2 and TE _1,4 modes indicates that the system is with reasonable broadband tunability.

Gyrotron

Oscillation (cell signaling)

10.1109/irmmw-thz.2015.7327572

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Citations (0)

Synthesis, light-emitting and optical limiting properties of new donor–acceptor conjugated polymers derived from 3,5-dicyano-2,4,6-tristyrylpyridine

Reactive and Functional Polymers (2006)

Hongli Wang Zhen Li Bin Huang Zuo‐Quan Jiang Yanke Liang

Thermal Stability

Acceptor

Quantum yield

10.1016/j.reactfunctpolym.2006.01.008

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Citations (17)

High Spectral Efficiency Mode-Multiplexed Transmission over 87-km 10-Mode Fiber

Optical Fiber Communication Conference (2016)

H. Chen Roland Ryf Nicolas K. Fontaine Amado M. Velázquez-Benítez José Enrique Antonio-Lopez

We demonstrate combined wavelength- and mode-multiplexed transmission with a spectral efficiency of 58 b/s/Hz over an 87-km single-span multi-mode fiber using 16-QAM modulation format. The hybrid fiber span comprises 10- and 15-mode fibers.

Modulation (music)

Mode (computer interface)

Spectral Efficiency

10.1364/ofc.2016.th4c.2

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Citations (15)

Structured Directional Coupler Pair for Multiplexing of Degenerate Modes

Bin Huang Cen Xia Gregor Matz Neng Bai Guifang Li

A technique for multiplexing degenerate modes in circular multimode fibers using the structure directional coupler pair is presented. The same device can be used for demultiplexing of degenerated modes in combination with MIMO processing.

Spatial multiplexing

10.1364/nfoec.2013.jw2a.25

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Citations (18)

Multi-mode Optical Fiber Amplifier Supporting over 10 Spatial Modes

Nicolas K. Fontaine Bin Huang Z. Sanjabi Eznaveh Haoshuo Chen Cang Jin

We demonstrate a multimode cladding-pumped fiber amplifier that supports 10 modes with 2-dB mode-dependent gain, 20-dB gain, and 25-dBm output power. The mode-dependent gain is minimized using an oversized core supporting additional modes.

Fiber amplifier

Cladding (metalworking)

Mode (computer interface)

Mode volume

10.1364/ofc.2016.th5a.4

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Citations (45)

Spatially and Spectrally Resolved Gain Characterization of Space-Division Multiplexing Amplifiers With Coherent Swept-Wavelength Reflectometry

Journal of Lightwave Technology (2016)

Bin Huang Haoshuo Chen Nicolas K. Fontaine Cang Jin Kuanping Shang

We directly measure the spatially and spectrally resolved gain of erbium doped multicore and few mode fiber amplifiers using a coherent swept wavelength interferometer operated in the reflection mode. It greatly simplifies the characterization of multispatial mode amplifiers because it enables characterization of the mode-dependent gain with only a single mode-selective multiplexer at the input. The gains for both multicore fiber amplifier and three spatial modes (LP ₀₁ and LP ₁₁ ) amplifier are measured. Measurements for multicore fiber amplifier are conducted using two pump schemes, core pump and cladding pump. Also, the comparison with the cutback experiments shows the validity of this technique.

Cladding (metalworking)

Fiber amplifier

10.1109/jlt.2016.2618599

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Citations (3)

On a whitening approach to partial channel estimation and blind equalization of FIR/IIR multiple-input multiple-output channels

IEEE Transactions on Signal Processing (2000)

J.K. Tugnait Bin Huang

Channel estimation and blind equalization of multiple-input multiple-output (MIMO) communications channels is considered using primarily the second-order statistics of the data. Such models arise when a single receiver data from multiple sources is fractionally sampled (assuming that there is excess bandwidth) or when an antenna array is used with or without fractional sampling. We consider estimation of (partial) channel impulse response and design of finite-length minimum mean-square error (MMSE) blind equalizers. The basis of the approach is the design of a zero-forcing equalizer that whitens the noise-free data. We allow infinite impulse response (IIR) channels. Moreover, the multichannel transfer function need not be column reduced. Our approaches also work when the "subchannel" transfer functions have common zeros as long as the common zeros are minimum-phase zeros. The channel length or model orders need not be known. The sources are recovered up to a unitary mixing matrix and are further "unmixed" using higher order statistics of the data. A linear prediction approach is also considered under the above conditions of possibly IIR channels, common subchannel zeros/factors, and not-necessarily column reduced channels. Four illustrative simulation examples are provided.

Finite impulse response

Blind equalization

Impulse response

10.1109/78.824677

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Citations (44)

Blind channel estimation and equalization of multiple-input multiple-output channels

J.K. Tugnait Bin Huang

Channel estimation and blind equalization of MIMO (multiple-input multiple-output) communications channels is considered using primarily the second-order statistics of the data. We consider estimation of (partial) channel impulse response and design of finite-length MMSE (minimum mean-square error) blind equalizers. The basis of the approach is the design of a zero-forcing equalizer that whitens the noise-free data. We allow infinite impulse response (IIR) channels. Moreover /spl Gamma/ the multichannel transfer function need not be column-reduced. Our approaches also work when the "subchannel" transfer functions have common zeros so long as the common zeros are minimum-phase zeros. The channel length or model orders need not be known. The sources are recovered up to a unitary mixing matrix and are further "unmixed" using higher-order statistics of the data. An illustrative simulation example is provided.

Blind equalization

Finite impulse response

Impulse response

10.1109/icassp.1999.761303

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Citations (15)

Improving the Sensitivity of LiDARs Using Few-Mode Pre-amplified Receivers

Frontiers in Optics + Laser Science 2021 (2018)

Rachel Sampson Huiyuan Liu He Wen Yuanhang Zhang Robert Stegeman

An order of magnitude improvement in the signal-to-noise ratio (SNR) of a 1550 nm LiDAR receiver was achieved using a few-mode optical preamplifier as compared to a multi-mode avalanche photodiode (APD). €

Preamplifier

SIGNAL (programming language)

Mode (computer interface)

Photodiode

10.1364/fio.2018.fw7a.2

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Citations (1)

Efficient annular cladding amplifier with six, three-mode cores

Cang Jin Bin Huang Kuanping Shang Haoshuo Chen Roland Ryf

We demonstrate a multi-core, multi-mode optical amplifier with 18 spatial channels pumped by a single 15-W multi-mode pump diode. The amplifier has >20-dB gain per mode, <;3-dB mode and core dependent gain, and >31 mW per spatial channel.

Cladding (metalworking)

Mode (computer interface)

10.1109/ecoc.2015.7341680

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Citations (21)