Dense Temporally Multiplexed Fiber Bragg Grating Sensing Based on Single-Photon Detection

Ou, Zhonghua; Fan, Xiaodong; Zhang, Lixun; Zhang, Ruiming; Yuan, Chenxi; Deng, Guangwei; Wang, Yong; Song, Hai‐Zhi; You, Lixing; Liu, Yong; Guo, Guang‐Can; Zhou, Qiang

doi:10.1109/jlt.2022.3158074

Cited by 3 publications

(2 citation statements)

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“…We focused our research on Geiger-mode avalanche photodiodes (single-photon avalanche diodes [68,69], negative feedback avalanche diodes [70]) and the application of the two-dimensional (2D) materials for photonlevel detectors [71]. Moreover, we have proposed fiber Bragg grating sensing system by utilizing single-photon detectors [72,73]. Optoelectronic Devices for Quantum Information Processing DOI: http://dx.doi.org/10.5772/intechopen.1002676…”

Section: Single-photon Detectorsmentioning

confidence: 99%

“…By employing single-photon detectors, the FBG sensor has the potential to achieve quantum-level measurements. In a previous study [72], we have successfully demonstrated a highly efficient FBG sensing system with dense temporal multiplexing using single photon detection at 1.5-μm wavelength. A spatial accuracy of 5.0 cm has been accomplished, mainly depending on the time jitter of a singlephoton detector and the duration of laser pulses.…”

Section: Application Of Single-photon Detectorsmentioning

confidence: 99%

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Optoelectronic Devices for Quantum Information Processing

Song,

Zhou,

Deng

et al. 2023

Optoelectronics - Recent Advances

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The recent developments of optoelectronics do promote the progress in many other fields. For quantum information processing, we made efforts in manufacturing quantum devices by using optoelectronic techniques. We designed quantum dot embedded nanocavities to serve as efficient quantum emitters; using spectral multiplexing technique, we fabricated a heralded single-photon source, emitting highly pure and speedy single photons; and defects in GaN were observed serving as room temperature quantum random number generators. An entangled photon emitter with visibility of 97% was developed using cascaded second-order nonlinear optical process in PPLN waveguides; and Si3N4 microrings were effectively applied to establish photon entanglers. Readout circuits were optimized to fabricate specific single-photon avalanche detectors, and telecomm-band single-photon avalanche detectors have been improved to 128 × 32 arrays for quantum imaging. A multiplexed quantum memory was explored to simultaneously store 1650 single photons. Opto-electro-mechanical devices were studied or fabricated in order to measure minor quantities in quantum level. These works may shed light on quantum information technology for the future.

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Section: Single-photon Detectorsmentioning

confidence: 99%

Section: Application Of Single-photon Detectorsmentioning

confidence: 99%

Optoelectronic Devices for Quantum Information Processing

Song,

Zhou,

Deng

et al. 2023

Optoelectronics - Recent Advances

Self Cite

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Effect of spectrum broadening on photon-counting fiber Bragg grating sensing

Ou¹,

Fan²,

Zhang³

et al. 2023

Opt. Express

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In a photon-counting fiber Bragg grating (FBG) sensing system, a shorter probe pulse width reaches a higher spatial resolution, which inevitably causes a spectrum broadening according to the Fourier transform theory, thus affecting the sensitivity of the sensing system. In this work, we investigate the effect of spectrum broadening on a photon-counting FBG sensing system with a dual-wavelength differential detection method. A theoretical model is developed, and a proof-of-principle experimental demonstration is realized. Our results give a numerical relationship between the sensitivity and spatial resolution at the different spectral widths of FBG. In our experiment, for a commercial FBG with a spectral width of 0.6 nm, an optimal spatial resolution of 3 mm and a corresponding sensitivity of 2.03 nm−1 can be achieved.

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