Fiber Bragg grating interrogation using wavelength modulated tunable distributed feedback lasers and a fiber-optic Mach–Zehnder interferometer

Roy, Anirban; Chakraborty, Arup Lal; Jha, Chandan Kumar

doi:10.1364/ao.56.003562

Cited by 10 publications

(3 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The FBG interrogator is a device that analyzes the data of the FBG by monitoring the central wavelength change. Several approaches for FBG interrogation have been reported in the literature, such as the scanning Fabry-Pérot (FP) cavity [8,9], tunable lasers [10,11], and volume phase grating-based spectrometers [12,13]. However, most traditional interrogators usually suffer from the high price and bulky volume, which limits their applications in some emerging fields, such as unmanned aerial vehicle (UAV) monitoring, lithium-ion battery status monitoring [14], and in-situ three-dimensional (3D) shape sensing [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

On-Chip Sub-Picometer Continuous Wavelength Fiber-Bragg-Grating Interrogator

Zhuang,

Zou,

Zhang

et al. 2024

Photonic Sens

View full text Add to dashboard Cite

Miniaturized fiber-Bragg-grating (FBG) interrogators are of interest for applications in the areas where weight and size controlling is important, e.g., airplanes and aerospace or in-situ monitoring. An ultra-compact high-precision on-chip interrogator is proposed based on a tailored arrayed waveguide grating (AWG) on a silicon-on-insulator (SOI) platform. The on-chip interrogator enables continuous wavelength interrogation from 1 544 nm to 1 568 nm with the wavelength accuracy of less than 1 pm [the root-mean-square error (RMSE) is 0.73 pm] over the whole wavelength range. The chip loss is less than 5 dB. The 1 × 16 AWG is optimized to achieve a large bandwidth and a low noise level at each channel, and the FBG reflection peaks can be detected by multiple output channels of the AWG. The fabricated AWG is utilized to interrogate FBG sensors through the center of gravity (CoG) algorithm. The validation of an on-chip FBG interrogator that works with sub-picometer wavelength accuracy in a broad wavelength range shows large potential for applications in miniaturized fiber optic sensing systems.

show abstract

Section: Introductionmentioning

confidence: 99%

On-Chip Sub-Picometer Continuous Wavelength Fiber-Bragg-Grating Interrogator

Zhuang,

Zou,

Zhang

et al. 2024

Photonic Sens

View full text Add to dashboard Cite

show abstract

“…Moreover, over the past decade, researchers have explored all-fiber MZI for sensing different physical parameters. Recently, the conventional directional coupler-based all-fiber MZI has been employed in selective mode multiplexing [117], temporal manipulation [118], microwave generation [119], gain equalization of ASE response of an EDFA [120,121] Mie Doppler wind lidar [122], phase correlation [123], group velocity control [124], tunable all-fiber flat-top comb filter [125], tunable distributed feedback lasers [126], detection of damage in structures [127], on-line displacement measurement [128,129] and sensing of vibration [130,131], strain [132,133], temperature [134][135][136], etc.…”

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

“…Roy utilized wavelength-modulated tunable distributed feedback lasers and a fiber-optic Mach–Zehnder (M–Z) interferometer to realize low-cost, high-accuracy FBG interrogation [ 9 ]. The near-infrared absorption line of methane was utilized as a reference wavelength, which yielded a precision of 1.9 pm.…”

Section: Introductionmentioning

confidence: 99%

A Fiber Bragg Grating Interrogation System with Self-Adaption Threshold Peak Detection Algorithm

Zhang

Jin

et al. 2018

Sensors

View full text Add to dashboard Cite

A Fiber Bragg Grating (FBG) interrogation system with a self-adaption threshold peak detection algorithm is proposed and experimentally demonstrated in this study. This system is composed of a field programmable gate array (FPGA) and advanced RISC machine (ARM) platform, tunable Fabry–Perot (F–P) filter and optical switch. To improve system resolution, the F–P filter was employed. As this filter is non-linear, this causes the shifting of central wavelengths with the deviation compensated by the parts of the circuit. Time-division multiplexing (TDM) of FBG sensors is achieved by an optical switch, with the system able to realize the combination of 256 FBG sensors. The wavelength scanning speed of 800 Hz can be achieved by a FPGA+ARM platform. In addition, a peak detection algorithm based on a self-adaption threshold is designed and the peak recognition rate is 100%. Experiments with different temperatures were conducted to demonstrate the effectiveness of the system. Four FBG sensors were examined in the thermal chamber without stress. When the temperature changed from 0 °C to 100 °C, the degree of linearity between central wavelengths and temperature was about 0.999 with the temperature sensitivity being 10 pm/°C. The static interrogation precision was able to reach 0.5 pm. Through the comparison of different peak detection algorithms and interrogation approaches, the system was verified to have an optimum comprehensive performance in terms of precision, capacity and speed.

show abstract

Fiber Bragg grating interrogation using wavelength modulated tunable distributed feedback lasers and a fiber-optic Mach–Zehnder interferometer

Cited by 10 publications

References 24 publications

On-Chip Sub-Picometer Continuous Wavelength Fiber-Bragg-Grating Interrogator

On-Chip Sub-Picometer Continuous Wavelength Fiber-Bragg-Grating Interrogator

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

A Fiber Bragg Grating Interrogation System with Self-Adaption Threshold Peak Detection Algorithm

Contact Info

Product

Resources

About