Optical Heterodyne Microvibration Detection Based on All-Fiber Acousto-Optic Superlattice Modulation

Zhang, Wending; Chen, Zhe; Jiang, Biqiang; Huang, Ligang; Mao, Dong; Gao, Feng; Mei, Ting; Yang, Di; Zhang, Lin; Zhao, Jianlin

doi:10.1109/jlt.2017.2717868

Cited by 12 publications

(4 citation statements)

References 27 publications

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“…Where R represents the detection coefficient of the PD, where the first two are DC components and the last is millimeter wave component. Finally, the whole system can output the millimeter wave band signal whose frequency is the difference between the two optical signal frequencies after filtering out the DC signal by the band-pass filter (BPF) [27] . The optical heterodyne system is simple in structure and has a higher signal frequency than direct modulation [28] .…”

Section: Optical Heterodynementioning

confidence: 99%

Research progress of optical millimeter wave generation technology in RoF system

Guo¹,

Yang²,

Song³

et al. 2023

International Conference on Optoelectronic Information and Functional Materials (OIFM 2023)

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Section: Optical Heterodynementioning

confidence: 99%

Research progress of optical millimeter wave generation technology in RoF system

Guo¹,

Yang²,

Song³

et al. 2023

International Conference on Optoelectronic Information and Functional Materials (OIFM 2023)

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“…Laser heterodyne detection (LHD) measures the interference signal between the target echo and the locally oscillating (LO) light, to obtain the frequency, phase, and amplitude information of the target echo and ultimately realize the measurement of the target distance, velocity, vibration, and so on [1,2]. LHD has an advantage over laser direct detection in terms of accuracy and sensitivity in acquiring the multidimensional motion information of a target [3][4][5][6][7]. In LIDAR application scenarios, such as synthetic aperture lidar and advanced remote sensing [8][9][10][11][12][13][14], etc., surface topography undulations of a moving target or atmospheric turbulence can lead to random phase fluctuations at different points in the optical field, thus introducing random phase noise [15,16].…”

Section: Introductionmentioning

confidence: 99%

Laser Heterodyne Detection Based on Photon Time–Domain Differential Detection Avoiding the Effect of Decoherence Phase Noise

Guan,

Zhang,

Jia

et al. 2023

Sensors

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Laser heterodyne detection (LHD) is a key velocimetry technique that provides better accuracy and sensitivity than direct laser detection. However, random phase noise can be introduced by the surface topography of the moving target undulation or atmospheric turbulence during transmission. The random phase noise causes the target echo to undergo decoherence, resulting in degradation of the signal-to-noise ratio (SNR). Here, we propose a novel LHD method based on photon time–domain differential detection. It can infer the heterodyne spectrum of the target echo and the local oscillator light from the time intervals of the photon arrival. The time interval statistic is a relative quantity, which can effectively avoid the effect of random phase noise in LHD. With our method, the SNR of LHD can be improved in application scenarios where the target echo is decoherent. We developed a complete solution model for acquiring the heterodyne spectrum based on photon time–domain differential detection and performed proof-of-principle experiments. The experimental results show that in the presence of random phase noise, the SNR and velocity measurement error of our method are significantly better than that of the conventional method, and the larger the phase noise is, the more the SNR and velocity measurement error of our method are improved. Moreover, along with the increase in phase noise, the SNR of our method is basically unchanged, which also indicates that our method is not affected by random phase noise. This advantage is significant for photon-level weak echoes that require long detection times to be detected.

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“…The pioneered discovery in 1986 that Kim et al firstly proposed and demonstrated the mode conversion with a frequency shift by a two-mode fiber-based AOMC [43], which has opened a door to novel researches on acousto-optic interactions (AOI) in fibers and various derived components. Among them, the most extensively concerned are tunable filters [51][52][53][54][55][56][57][58][59][60][61][62][63][64], super lattice modulations [65][66][67][68][69], heterodyne vibration detections [70][71][72][73], AOI in photonic crystal fibers (PCFs) [74][75][76][77], wavelength tunable lasers [78][79][80][81][82], ultrafast fiber lasers based on AOMCs [83][84][85][86][87][88][89][90][91][92], vector modes generations [93][94][95]...…”

Section: Introductionmentioning

confidence: 99%

“…Recently, benefit from the new mechanism of the co-effect of acoustic and optical birefringence on the AOMC in an ellipse-core FMF (E-FMF), dynamic mode switching could be demonstrated successfully via frequency shift keying (FSK) technique. The novel AOMC with dynamic mode switching has attracted immense attentions targeting in dynamic optical field tuning for HOM lasers sensing [70][71][72][73] Orthogonal mode switching [107] OAM switching [105] Tunable notch filter [51][52][53][54][55][56][57][58][59][61][62][63][64] MZI tunable filter [60] 2020 Figure 1: The development tree of researches based on acousto-optic (AO) interactions in fibers.…”

Section: Introductionmentioning

confidence: 99%

Recent progress of dynamic mode manipulation via acousto-optic interactions in few-mode fiber lasers: mechanism, device and applications

Shi

et al. 2020

Nanophotonics

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The burgeoning advances of spatial mode conversion in few-mode fibers emerge as the investigative hotspot in novel structured light manipulation, in that, high-order modes possess a novel fundamental signature of various intensity profiles and unique polarization distributions, especially orbital angular momentum modes carrying with phase singularity and spiral wave front. Thus, control of spatial mode generation becomes a crucial technique especially in fiber optics, which has been exploited to high capacity space division multiplexing. The acousto-optic interactions in few-mode fibers provide a potential solution to tackle the bottleneck of traditional spatial mode conversion devices. Acousto-optic mode conversion controlled by microwave signals brings tremendous new opportunities in spatial mode generation with fast mode tuning and dynamic switching capabilities. Besides, dynamic mode switching induced by acousto-optic effects contributes an energy modulation inside a laser cavity through nonlinear effects of multi-mode interaction, competition, which endows the fiber laser with new functions and leads to the exploration of new physical mechanism. In this review, we present the recent advances of controlling mode switch and generation employing acousto-optic interactions in few-mode fibers, which includes acousto-optic mechanisms, optical field manipulating devices and novel applications of spatial mode control especially in high-order mode fiber lasers.

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Optical Heterodyne Microvibration Detection Based on All-Fiber Acousto-Optic Superlattice Modulation

Cited by 12 publications

References 27 publications

Research progress of optical millimeter wave generation technology in RoF system

Research progress of optical millimeter wave generation technology in RoF system

Laser Heterodyne Detection Based on Photon Time–Domain Differential Detection Avoiding the Effect of Decoherence Phase Noise

Recent progress of dynamic mode manipulation via acousto-optic interactions in few-mode fiber lasers: mechanism, device and applications

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