Wavefront Splitting Fiber Mach–Zehnder Interferometer Modulated by the White Light Fraunhofer Diffraction

Ma, R.; Li, Yan; Cao, Hujun; Li, Xiaoping; Pan, Yue; Man, Zhong‐Xiao; Dong, Xinyong; Xia, Yunjie

doi:10.1109/jlt.2019.2921987

Cited by 7 publications

(2 citation statements)

References 25 publications

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“…In addition to the structure, in 2019, Rende Ma [ 82 ] first split the wave front of a Gaussian beam with a polyethylene terephthalate (PET) film and then focused it into the SMF by another collimator to form a stable fiber MZI. Its salinity sensitivity can reach −0.81 nm/‰.…”

Section: Salinity Ofssmentioning

confidence: 99%

Review of Seawater Fiber Optic Salinity Sensors Based on the Refractive Index Detection Principle

Wang

Shi

et al. 2023

Sensors

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This paper presents a systematic review of the research available on salinity optic fiber sensors (OFSs) for seawater based on the refractive index (RI) measurement principle for the actual measurement demand of seawater salinity in marine environmental monitoring, the definition of seawater salinity and the correspondence between the seawater RI and salinity. To further investigate the progress of in situ measurements of absolute salinity by OFSs, the sensing mechanisms, research progress and measurement performance indices of various existing fiber optic salinity sensors are summarized. According to the Thermodynamic Equation of Seawater-2010 (TEOS-10), absolute salinity is recommended for sensor calibration and measurement. Comprehensive domestic and international research progress shows that fiber-optic RI sensors are ideal for real-time, in situ measurement of the absolute salinity of seawater and have excellent potential for application in long-term in situ measurements in the deep ocean. Finally, based on marine environmental monitoring applications, a development plan and the technical requirements of salinity OFSs are proposed to provide references for researchers engaged in related industries.

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Section: Salinity Ofssmentioning

confidence: 99%

Review of Seawater Fiber Optic Salinity Sensors Based on the Refractive Index Detection Principle

Wang

Shi

et al. 2023

Sensors

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“…Therefore, although the derivation result is based on a specific element distribution on OIRS, the deduction method does not deviate from the actual system. 1) Fraunhofer diffraction: The beam reflected by OIRS will undergo Fraunhofer diffraction through the lens [43], [44]. As shown in Fig.…”

Section: Analysis Of Reflected Beam Characteristicsmentioning

confidence: 99%

Two New Approaches to Optical IRSs: Schemes and Comparative Analysis

Wang¹,

Zhang²,

Zhu³

et al. 2020

Preprint

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Oriented to the point-to-multipoint free space optical communication (FSO) scenarios, this paper analyzes the micro-mirror array and phased array-type optical intelligent reflecting surface (OIRS) in terms of control mode, power efficiency, and beam splitting. We build the physical models of the two types of OIRSs. Based on the models, the closed form solution of OIRSs' output power density distribution and power efficiency, along with their control algorithms have been derived. Then we propose the algorithms of beam splitting and multi-beam power allocation for two types of OIRSs.The channel fading in FSO system and the comparison of two types of OIRSs in actual systems are discussed according to the analytical results. Experiments and simulations are both presented to verify the feasibility of models and algorithms.

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