Shangjian Zhang

National Engineering Research Center of Electromagnetic Radiation Control Materials

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Zhiyao Zhang

University of Electronic Science and Technology of China

119

Yong Liu

University of Electronic Science and Technology of China

Heping Li

University of Electronic Science and Technology of China

Xinhai Zou

University of Electronic Science and Technology of China

Heng Wang

Dalian University of Technology

Yali Zhang

Starkey Hearing Technologies (United States)

Lingjie Zhang

University of Electronic Science and Technology of China

Yong Liu

Shenzhen University

Yong Liu

University of Electronic Science and Technology of China

Yali Zhang

Ningxia University

Cooperative Institutions

University of Electronic Science and Technology of China

172

National Engineering Research Center of Electromagnetic Radiation Control Materials

Chinese Academy of Sciences

University of Chinese Academy of Sciences

State Key Laboratory of Electronic Thin Films and Integrated Devices

Huazhong University of Science and Technology

Shanghai Jiao Tong University

Zhejiang University

Tsinghua University

University of Science and Technology of China

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Bias-independent Frequency Response Measurement of Electro-optic Modulation Chips Utilizing Fixed Low-frequency Photodetection and Three-port Microwave De-embedding

2022 Photonics & Electromagnetics Research Symposium (PIERS) (2024)

Junfeng Zhu Xinhai Zou Ying Xu Chao Jing Yali Zhang

Photodetection

Port (circuit theory)

Modulation (music)

10.1109/piers62282.2024.10618006

Cite

Citations (0)

Cross-referenced deadband-free microwave frequency measurement with cascaded-four-wave-mixing-based photonic harmonic down-conversion

Optics Express (2019)

Xinhai Zou Shangjian Zhang Heng Wang Yangxue Ma Xuyan Zhang

A cross-referenced and deadband-free method with photonic harmonic down-conversion is proposed for microwave frequency measurement based on cascaded-four-wave-mixing (CFWM) in semiconductor optical amplifiers. The proposed method enables ultra-wide and accurate frequency measurement with low-frequency spectrum detection, and at the same time achieves deadband-free and multi-tone frequency measurement by cross-referenced frequency discrimination. For a proof of concept, microwave signal measurement is experimentally demonstrated up to the 40 GHz frequency range with an 0.2-MHz measurement error. The frequency measurement features ease of configuration by only changing the low-frequency electrical local oscillators of the CFWM-based photonic harmonic down-converter.

Harmonic

Frequency multiplier

10.1364/oe.27.023714

Cite

Citations (4)

Self-clocking based on in-band pilot for ultra-high bit rates OTDM system

2022 20th International Conference on Optical Communications and Networks (ICOCN) (2012)

Shangjian Zhang Rongguo Lu Yali Zhang Shuang Liu Yong Liu

We demonstrated a novel self-clocking based on in-band phase-modulated pilot insertion and extraction for ultra-high speed optical time-division multiplexing (OTDM) signals. The clock recovery function is realized by inserting at the transmitter and extracting at the receiver an in-band phase-modulated pilot that is located in the data spectrum, which eliminates the need for an ultra-fast phase comparator and a phase-locked loop in the receiver. Experimental results show the clock can be successfully extracted from 160 Gbit/s OTDM data signal and employed for demultiplexing of 40Gbit/s tributaries. The self-clocking leads to fast synchronization, low timing jitter and highly stable recovered clock, which introduces 1.5 dB of power penalty with an error-free performance. The proposed method simplifies the design of an OTDM receiver and requires minor modifications of the standard OTDM transmitter.

Clock Recovery

Time-division multiplexing

Pilot signal

10.1109/icocn.2012.6486222

Cite

Citations (0)

Deadband-free Microwave Frequency Measurement by Cross-referenced Photonic Harmonic Down-conversion based on Cascaded Four Wave Mixing of SOAs

Yutong He Chao Jing Xinhai Zou Heng Wang Yali Zhang

A deadband-free method of microwave frequency measurement is proposed by cross-referencing the photonic harmonic down-converted tones based on cascaded four wave mixing in semiconductor optical amplifiers, enabling ultra-wide measurement with low-frequency analysis.

Four-wave mixing

Harmonic

Harmonic Analysis

10.1364/ofda.2019.ofth2a.3

Cite

Citations (0)

Calibration-free measurement of high-speed Mach–Zehnder modulator based on low-frequency detection

Optics Letters (2016)

Shangjian Zhang Chong Zhang Heng Wang Xinhai Zou Yong Liu

A calibration-free electrical method is demonstrated for measuring the frequency response of high-speed Mach–Zehnder modulators (MZMs) based on low-frequency detection. The method achieves the high-frequency modulation index and half-wave voltage measurement of MZMs by the low-frequency electrical spectrum analysis of the two-tone and bias-modulated optical signal. Moreover, it eliminates the need for correcting the responsivity fluctuation in the photodetector through setting a specific frequency relationship between the two-tone and bias modulation. Both absolute and relative frequency response of MZMs are experimentally measured with our method and compared with those obtained with conventional methods to check for consistency.

Electro-optic modulator

Modulation index

Modulation (music)

SIGNAL (programming language)

10.1364/ol.41.000460

Cite

Citations (26)

Hyperfine magnitude response measurement for optical filters based on low-frequency detection

IEEE Conference Proceedings (2016)

Shangjian Zhang Zou Xin-Hai Chong Zhang Heng Wang Yali Zhang

Source

Cite

Citations (0)

Tunable microwave frequency comb generation via periodic relaxation oscillation in directly modulated laser

Optics & Laser Technology (2023)

Tingchuan Gao Yali Zhang Juncheng Li Shouhai Li Zhiyao Zhang

In this paper, a novel and simple generation scheme based on a directly modulated laser (DML) is proposed for tunable microwave frequency combs (MFCs). When the input modulated RF power is intentionally controlled to be sufficiently high to drive the DML into its nonlinear operating region periodically, relaxation oscillations will be excited in the same period. The modulated light from the DML is subsequently detected by a photodetector, and a special kind of microwave signal source can be optically produced and shows up in the form of MFC in the frequency domain. In the proof-of-concept experiment, tunable MFCs are demonstrated with the bandwidth of more than 25 GHz, the comb spacing of 0.5 ∼ 3 GHz, and the flatness of less than ± 2 dB with the frequency from 3 GHz to 18 GHz. The bandwidth of the generated MFC is in accordance with the relaxation oscillation frequency of the DML. The comb spacing is strictly equal to the frequency of the modulated RF signal and thus flexibly adjustable. The carrier-to-noise ratio can be up to 48 dB, and the single-sideband phase noise is measured to be lower than − 90 dBc/Hz@1 kHz for MFCs with comb spacings of 0.7 ∼ 3 GHz.

Flatness (cosmology)

Oscillation (cell signaling)

10.1016/j.optlastec.2023.110295

Cite

Citations (4)

Broadband microwave measurement based on photonic down-conversion sampling

Zhiyao Zhang Shangjian Zhang Yali Zhang Yong Liu

Photonic down-conversion sampling is a promising technique that can directly and adaptively transfer a high-frequency microwave signal to a low-frequency replica in the first Nyquist zone, thanks to the large bandwidth of the electro-optic modulator and the ultra-short optical pulse train. Therefore, this technique is beneficial to achieving broadband microwave measurement by using a low-speed photodetector together with a low-frequency and narrowband digital (or analog) receiver. In this presentation, we will discuss broadband high-resolution microwave frequency measurement schemes based on low-speed photonic sampling, which are applicable for multi-tone signal. We will also discuss calibration-free microwave characterization of broadband electro-optic modulators based on low-speed photonic sampling, where the microwave response of either a phase modulator or an intensity modulator can be obtained through low-frequency detection.

Narrowband

Nyquist–Shannon sampling theorem

10.1117/12.2573338

Cite

Citations (0)

Influence of the humid air on the structure and fluorescent property of CsI:Tl thin film

Journal of Materials Science Materials in Electronics (2019)

Chunhui Tian Shuang Liu Yijun Xie Lina Guo Shangjian Zhang

10.1007/s10854-019-01084-8

Cite

Citations (3)

Ultrafast nonlinear dynamics in semiconductor optical amplifiers for optical signal processing

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (2012)

Yong Liu Ligong Chen Xiu Zheng Shangjian Zhang Rongguo Lu

We present the investigation results on the nonlinear phase and chirp dynamics in semiconductor optical amplifiers (SOAs). Time-resolved gain and phase dynamics of a quantum well SOA are measured using 2 ps pump pulses into an integrated Mach-Zehnder interferometer switch under a co-propagation arrangement. Ultrafast component in the phase recovery is clearly observed. We explain the ultrafast phase dynamic by using a field propagation numerical model that includes the impact of sub-picosecond intra-band effects of the SOA. In addition, we investigate the chirp properties of the SOA in all-optical switches, and analyze the influences of chirp dynamics upon the detuned-filtering-based optical switches that extract the ultrafast chirp component to realize more than 160 Gbit/s optical switching. The results are very useful for SOA-based ultrafast optical signal processing in photonic networks.

Chirp

Picosecond

10.1117/12.2008716

Cite

Citations (2)