Qi Mo

Yunnan University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Cheng Du

Fiberhome Technology Group (China)

Jian Wang

Huazhong University of Science and Technology

Long Zhu

Hunan University of Science and Technology

Jun Liu

State Grid Corporation of China (China)

Andong Wang

Beijing Institute of Technology

Juhao Li

Peking University

Yongqi He

Beijing Tian Tan Hospital

Zhengbin Li

Peking University

Guifang Li

Northwestern Polytechnical University

Fang Ren

University of Science and Technology Beijing

Cooperative Institutions

Institute of High Energy Physics

173

Chinese Academy of Sciences

China Center of Advanced Science and Technology

University of Chinese Academy of Sciences

Beihang University

COMSATS University Islamabad

Huazhong University of Science and Technology

University of Turin

Shanghai Jiao Tong University

Yunnan University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Experimental Performance Evaluation of Analog Signal Transmission System with Photonic Integrated Optical Vortex Emitter and 3.6 km Few-Mode Fiber Link

Optical Fiber Communication Conference (2016)

Jun Liu Shimao Li Jing Du Charalambos Klitis Long Zhu

We experimentally demonstrate and evaluate the performance of analog signal transmission system with photonic integrated optical vortex emitter and 3.6 km few-mode fiber (FMF) link using OAM2 and OAM-2 modes and measured the spurious free dynamic range (SFDR) of the second-order harmonic distortion (SHD).

Spurious-free dynamic range

SIGNAL (programming language)

Optical link

Distortion (music)

Spurious relationship

10.1364/ofc.2016.th2a.25

Cite

Citations (1)

Demonstration of bidirectional PON based on mode division multiplexing

2022 IEEE Photonics Conference (IPC) (2016)

Tao Hu Juhao Li Fang Ren Ruizhi Tang Jinyi Yu

Recently, mode division multiplexing (MDM) has been introduced into optical transmission systems and networks for capacity enhancement. In this letter, we propose a bidirectional passive optical network (PON) architecture based on MDM. The bidirectional optical distribution network (ODN) of the MDM-PON consists of few-mode fiber, passive mode multiplexer/demultiplexer and few-mode circulators (FMCs), all of which are characterized by low modal-crosstalk. Signals in different modes are able to be transmitted and received independently for both downstream and upstream transmission. We experimentally demonstrate the bidirectional MDM-PON transmission over 10-km 2-mode optical fiber. 10-Gb/s on-off-keying (OOK) signals can be independently transmitted and directly detected without coherent receiver and multi-input-multiple-output (MIMO) processing. Moreover, nonlinear transmission impairments are experimentally investigated.

Time-division multiplexing

Mode (computer interface)

10.1109/ipcon.2016.7831232

Cite

Citations (6)

Development of Collaborative Business Processes: A Correctness Enforcement Approach

IEEE Transactions on Services Computing (2019)

Qi Mo Wei Song Fei Dai Leilei Lin Tong Li

Collaborative business processes gather a set of business processes with complementary competencies and knowledge to cooperate to achieve more business successes. To ensure their successful implementation, correctness is a key issue that needs to be addressed during their development. To this end, a novel correctness enforcement approach is proposed to support the development of collaborative business processes. In this approach, we first give an algorithm to check the correctness of an original process specified by Petri nets. Then, we prune its reachability graph to obtain its core in case of partially correct, which is a reduced reachability graph that doesn't cover invalid states. Finally, we generate a set of controllers from the core using coordination mapping (i.e., inserting some coordination activities into controllers), and then an enforced process is built by the composition of the original process and the controllers. Our approach is implemented as an analysis module called cetool in the PIPE (Platform Independent Petri Net Editor) and it is validated on a set of real-world cases. The results show the effectiveness and efficiency of the proposed approach.

Business process discovery

10.1109/tsc.2019.2961346

Cite

Citations (17)

Simultaneous Measurement of Temperature and Strain Based on a Polarization-Maintaining Few-Mode Fiber

Optical Fiber Communication Conference (2017)

Liyao Yu Jian Zhao Qi Mo Lin Zhang Guifang Li

An optical sensor based on a polarization-maintaining few-mode fiber (PM-FMF) for simultaneous sensing of temperature and strain is demonstrated, for the first time. The sensor has a temperature sensitivity of about 175 pm/°C and a strain sensitivity of about 5 pm/με with an accuracy of 0.1°C and 10 με.

Strain (injury)

10.1364/ofc.2017.w3h.6

Cite

Citations (4)

Experimental Demonstration of Linearly Polarized (LP) Modes and Orbital Angular Momentum (OAM) Modes Conversion in Few-Mode Fiber

Asia Communications and Photonics Conference 2021 (2015)

Long Zhu Andong Wang Jun Liu Shuhui Li Cheng Du

We experimentally demonstrate the conversion of one mode (x-pol LP11a or OAM-1) to eight different modes (LP11a, LP11b, OAM+1, OAM-1 with two polarization) with a 10 Gbit/s on-off keying (OOK) signal in 1.1 km few-mode fiber (FMF), and achieve bit-error rate (BER) below 2e-3.

Gigabit

Mode (computer interface)

Amplitude-shift keying

10.1364/acpc.2015.asu2a.98

Cite

Citations (5)

Knowledge Tracing Modeling Method for Programming Task

Zhenyi Wu Jianbo Jiang Junyu Lu Yu Su Qi Mo

Knowledge Tracing is used to assess student learning progress and predict student performance. It analyzes the student's learning history to infer the degree to which the student has mastered the knowledge points. Existing knowledge tracking models often have various limitations. First, most knowledge tracking models take question number and student's binary answer as the input mode, ignoring other information of the student's answer, and second, most KT models are based on few attempts, so the current KT model cannot adapt to More complex answering situations in multiple task. This paper studies the KT model in the field of computer education. By analyzing the characteristics of the programming task KT data set, a modeling method for programming task is proposed. First, we got the students' accurate score information based on the code text's similarity. Then, we extracted student's multiple attempt sequence features based on the sliding window, which improved the model's ability to solve long-sequence problems. Experiments on three standard KT models showed that this modeling method effectively improved model performance. model performance.

Tracing

Code (set theory)

Similarity (geometry)

Sequence (biology)

Tracking (education)

10.1109/isctis58954.2023.10213000

Cite

Citations (0)

Tunable mode rotator for space-division multiplexing based on a few mode-polarization maintaining fiber

Applied Optics (2016)

Xiaobin Hong Xinglin Zeng Yan Li Qi Mo Yongjie Tian

In this paper, a fiber-based tunable mode rotator is proposed and demonstrated by using the few mode-polarization maintaining fiber (FM-PMF). The mode birefringence in the FM-PMF causes phase difference between two orthogonal degenerate modes. With rotating the FM-PMF segment and getting a variation of aligning angle between the injected LP11 (LP21) mode axis and FM-PMF axis, another intended LP11 (LP21) mode with a certain orientation can be controllably generated at the FM-PMF output.

Mode volume

Mode (computer interface)

10.1364/ao.55.009360

Cite

Citations (11)

Research on software evolution process model based on Bigraph theory

Jisuanji yingyong yanjiu (2013)

Peipei Liu Yong Zhang Qi Mo Zhen Shao

This paper did some research about the model of software evolution process to model about the dynamic changes of software evolution process.Based on the Bigraph theory and software evolution process,firstly,it proposed a formal model of software evolution process,then utilized the expanded Bigraph theory to describe the structure of the model of software evolution process and used the Bigraph reaction system to describe the dynamic changes in the model of software evolution process.Lastly,it verified the integrity of the model of software evolution process after dynamic adjustment.

Software evolution

Source

Cite

Citations (0)

Gain Equalized Four Mode Groups Erbium Doped Fiber Amplifier with LP01 Pump

Asia Communications and Photonics Conference 2021 (2016)

Zhenzhen Zhang Qi Mo Cheng Guo Ningbo Zhao Cheng Du

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text Z. Zhang, Q. Mo, C. Guo, N. Zhao, C. Du, and X. Li, "Gain Equalized Four Mode Groups Erbium Doped Fiber Amplifier with LP01 Pump," in Asia Communications and Photonics Conference 2016, OSA Technical Digest (online) (Optica Publishing Group, 2016), paper ATh3B.5. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article

Erbium

Fiber amplifier

10.1364/acpc.2016.ath3b.5

Cite

Citations (2)

Orbital angular momentum mode groups multiplexing transmission over 26-km conventional multi-mode fiber

Optics Express (2017)

Long Zhu Andong Wang Shi Chen Jun Liu Qi Mo

Twisted light carrying orbital angular momentum (OAM) is a special kind of structured light that has a helical phase front, a phase singularity, and a doughnut intensity profile. Beyond widespread developments in manipulation, microscopy, metrology, astronomy, nonlinear and quantum optics, OAM-carrying twisted light has seen emerging application of optical communications in free space and specially designed fibers. Instead of specialty fibers, here we show the direct use of a conventional graded-index multi-mode fiber (MMF) for OAM communications. By exploiting fiber-compatible mode exciting and filtering elements, we excite the first four OAM mode groups in an MMF. We demonstrate 2.6-km MMF transmission using four data-carrying OAM mode groups (OAM0,1, OAM+1,1/OAM-1,1, OAM+2,1, OAM+3,1). Moreover, we demonstrate two data-carrying OAM mode groups multiplexing transmission over the 2.6-km MMF with low-level crosstalk free of multiple-input multiple-output digital signal processing (MIMO-DSP). The demonstrations may open up new perspectives to fiber-based OAM communication/non-communication applications using already existing conventional fibers.

Free-Space Optical Communication

Optical vortex

10.1364/oe.25.025637

Cite

Citations (79)