Highly sensitive magnetic field sensor using tapered Mach–Zehnder interferometer

Chen, Hao; Shao, Zhihua; Zhang, Xuan; Hao, Yongxin; Rong, Qiangzhou

doi:10.1016/j.optlaseng.2018.03.016

Cited by 35 publications

(6 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The performance comparison of the proposed sensor with the MF-based optical fiber MZI sensors in recent years is given in Table 2. From Table 2, the sensitivity and the measurement range of [21,[26][27][28] are lower than that of the structure proposed in this paper, and although the sensitivity of [29] is higher than that of the proposed sensor, the measurement range is only from 0.024 to 0.2 Gs and the glue immersion method is adopted. In As shown in Figure 9a, the transmission spectrum after band-pass filtering of the sensor in the magnetic field range of 0~200 Gs is blue shifted with the increase in magnetic field intensity, and the sensitivity is −116.1 pm/Gs with a linearly fitted index of 0.9940, as shown in Figure 9b.…”

Section: The Experimental Analysismentioning

confidence: 75%

“…In The performance comparison of the proposed sensor with the MF-based optical fiber MZI sensors in recent years is given in Table 2. From Table 2, the sensitivity and the measurement range of [21,[26][27][28] are lower than that of the structure proposed in this paper, and although the sensitivity of [29] is higher than that of the proposed sensor, the measurement range is only from 0.024 to 0.2 Gs and the glue immersion method is adopted. In addition, only the basic fusing structure is used in this paper, and the sensitivity of the sensor can be further improved through the methods of tapering, bending, and dislocation of SHDCF.…”

Section: The Experimental Analysismentioning

confidence: 75%

See 1 more Smart Citation

All Fiber Mach–Zehnder Interferometer Based on Intracavity Micro-Waveguide for a Magnetic Field Sensor

2021

View full text Add to dashboard Cite

A magnetic fluid (MF)-based magnetic field sensor with a filling-splicing fiber structure is proposed. The sensor realizes Mach–Zehnder interference by an optical fiber cascade structure consisting of single mode fiber (SMF), multimode fiber (MMF), and single-hole-dual-core fiber (SHDCF). The core in the cladding and the core in the air hole of SHDCF are used as the reference and sensing light path, respectively, and the air hole of SHDCF is filled with magnetic fluid to realize magnetic field measurement based on magnetic controlled refractive index (RI) characteristics. The theoretical feasibility of the proposed sensing structure is verified by Rsoft simulation, the optimized length of SHDCF is determined by optical fiber light transmission experiment, and the SHDCFs are well fused without collapse through the special parameter setting. The results show that the sensitivity of the sensor is −116.1 pm/Gs under a magnetic field of 0~200 Gs with a good long-term operation stability. The proposed sensor has the advantages of high stability, fast response, simple structure, and low cost, which has development potential in the field of miniaturized magnetic field sensing.

show abstract

Section: The Experimental Analysismentioning

confidence: 75%

Section: The Experimental Analysismentioning

confidence: 75%

All Fiber Mach–Zehnder Interferometer Based on Intracavity Micro-Waveguide for a Magnetic Field Sensor

2021

View full text Add to dashboard Cite

show abstract

“…The spectral response of MMZI with variable fringe widths shows higher sensitivity than that of the wavelength spectrum with uniform free spectral range (FSR) [11]. With regard to the tapered fiber, recently, diverse designs of inline MZI have been reported [12] with a wide variety of applications, which include the gain equalization of amplified spontaneous emission (ASE) response of an erbium-doped fiber amplifier (EDFA) [13], multi-wavelength laser [14][15][16][17][18][19][20], all-optical switching [21], wearable respiration monitoring [22], detection of ammonia [23], detection of uric acid [24], hydrogen sulfide gas [25], sensing of refractive index , curvature [52][53][54][55][56][57][58][59], temperature [60][61][62][63][64][65][66][67], strain [68][69][70][71], humidity [72][73][74][75], pressure [76,77], magnetic field [78][79][80], DC…”

Section: Introductionmentioning

confidence: 99%

Comparative spectral tuning and fluctuation analysis of an all-fiber Mach–Zehnder interferometer and micro Mach–Zehnder interferometer

Ramachandran

Kumar

2021

J. Opt.

View full text Add to dashboard Cite

This paper presents a comparative spectral analysis for tuning all-fiber directional coupler-based Mach–Zehnder Interferometer (MZI) and all-fiber inline Micro Mach–Zehnder Interferometer (MMZI) configurations. The analytical background is necessary to estimate the change in the differential path length for tuning the channel (peak) wavelengths and inter-channel spacing (i.e. free spectral range) of the MZI. We briefly describe the method used to adjust the spectral response experimentally. The spectral tuning of all-fiber MZI and MMZI has been successfully implemented in different applications of fiber optic communication and sensing (Ramachandran et al (2014 IEEE Sens. J. 15 1270–4; 2017 Opt. Fiber Technol. 36 195–8), Kumar and Ramachandran (2013 Opt. Commun. 289 92–96; 2014 Opt. Laser Technol. 63 144–7)). The spectral tuning of the MMZI is based on the interference length. Compared to MZI, miniaturized MMZI does not deal with any spectral fluctuation when employed in dense wavelength division multiplexing (DWDM) application and a sensing scheme. Research during the past year has surveyed the different MZI structures from an application perspective to infer that MMZI might be the most suitable configuration for sensing applications, and MZI may prove to be more useful in DWDM optical networks.

show abstract

“…These advantages have attracted much attention in related fields [4]. To date, various sorts of fiberoptic RI sensors have been implemented and reported, including interferometers, microstructure fibers, and fiber gratings [5][6][7][8]. Amongst these sensors, the coupling of light from the core mode into co-propagating cladding modes in long-period fiber gratings (LPFGs) results in an acute sensitivity of the cladding mode effective RI to the surrounding medium.…”

Section: Introductionmentioning

confidence: 99%

Refractive Index Sensor Based on Graphene Oxide-Coated Long-Period Fiber Grating Inscribed in a Two-Mode Fiber

Sang

Wang

et al. 2020

IEEE Access

View full text Add to dashboard Cite

Refractive index (RI) sensing is a promising technique in a variety of different scientific and industrial applications. In this paper, we theoretically and experimentally propose a newly-designed RI sensor. The proposed sensor consists of a particular long-period fiber grating inscribed in a two-mode fiber (LPFG-TMF) coated with tunable graphene oxide (GO), and the special structure allows an extremely high sensitivity in the transition region. The mode coupling between the LP 11 core mode and the sixth-order cladding mode in the LPFG-TMF offers an apparently higher sensitivity feature. And the sensitivity is higher than that of a single-mode fiber-based LPFG (LPFG-SMF), which originates from the coupling between the core mode and the sixth-order cladding mode. Furthermore, the ultrasonic treatment time of GO, which impacts on the properties and performance of RI sensing, is also studied and investigated. Proof-of-concept results demonstrate significantly that comparing with the bare LPFG-TMF (621.66 nm/RIU) and LPFG-SMF coated with GO ultrasonicated 5 hours (323.68nm/RIU), the LPFG-TMF coated with GO ultra-sonicated 5 hours performs optimized sensitivity of 11605.79 nm/RIU when surrounding RI ranges from 1.4558 to 1.4577. With its premium ability to operate highsensitivity measurements, the RI sensing is expected to be useful for broad applications across the chemical fields. INDEX TERMS graphene oxide, long-period fiber grating, refractive index measurement, two-mode fiber.

show abstract

Highly sensitive magnetic field sensor using tapered Mach–Zehnder interferometer

Cited by 35 publications

References 30 publications

All Fiber Mach–Zehnder Interferometer Based on Intracavity Micro-Waveguide for a Magnetic Field Sensor

All Fiber Mach–Zehnder Interferometer Based on Intracavity Micro-Waveguide for a Magnetic Field Sensor

Comparative spectral tuning and fluctuation analysis of an all-fiber Mach–Zehnder interferometer and micro Mach–Zehnder interferometer

Refractive Index Sensor Based on Graphene Oxide-Coated Long-Period Fiber Grating Inscribed in a Two-Mode Fiber

Contact Info

Product

Resources

About