Multiplexed Fiber Bragg Grating Interrogation System Using a Microelectromechanical Fabry–Perot Tunable Filter

Allan, William; Graham, Z.W.; Zayas, Jose R.; Roach, Dennis P.; Horsley, David A.

doi:10.1109/jsen.2009.2024849

Cited by 24 publications

(16 citation statements)

References 23 publications

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“…Comparison between the demodulation method and other traditional demodulation techniques is shown in Table II [16,17,18,19]. The demodulation system is more simplified than traditional demodulation systems, and has a potential value to be used in low-cost and compact-size commercial applications.…”

Section: Resultsmentioning

confidence: 99%

A novel algorithm based on DFB tunable laser array for demodulation of FBG sensors

Guo

Yao

et al. 2017

IEICE Electron. Express

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In this paper, a high effective demodulate algorithm based on tunable four-channel DFB (Distributed Feedback) laser array is proposed. In comparison with common algorithms which can work correctly when tunable laser have to be rapidly tuned through FBG's (Fiber Bragg Grating) whole spectrum, the algorithm is unique in that accurate demodulation can be done by scanning only 0.4 nm bandwidth of FBG's reflected spectrum and the scanned spectrum can be any part of the whole FBG spectrum including those regions with relatively low power. Therefore, the laser tuning time and response time of demodulation system is much more reduced which is important for most applications that need dynamic, real-time measurements. Wavelength-division multiplexing for FBG sensing network will be supported by the demodulating system and algorithm. Based on strain experiments of the FBG sensing system, excellent demodulation accuracy were demonstrated by the proposed algorithm.

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Section: Resultsmentioning

confidence: 99%

A novel algorithm based on DFB tunable laser array for demodulation of FBG sensors

Guo

Yao

et al. 2017

IEICE Electron. Express

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“…Therefore, the LiNbO 3 F-P filter has been widely utilized in WDM demultiplexer (DEMUX) unit and optical multi-channel transmission system, due to its high tunable speed, broadband and high finesse [7][8] .…”

Section: Fig 1 Structure Of the F-p Tunable Filtermentioning

confidence: 99%

A novel scheme of generating multi-frequency spectral amplitude code labels by employing a single laser and a Fabry-Perot tunable filter

Cao

2011

2011 IEEE 13th International Conference on Communication Technology

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We propose a new method of generating multifrequency spectral amplitude code (SAC) labels with a single laser and a Fabry-Perot tunable filter. Our proposal offers a substantial simplification in terms of required optical sources to build a SAC label transmitter. SAC label up to 16 frequencies could be generated by a single wavelength laser, and the label bit rate is accelerated to 1.25 Gb/s. Received label quality is estimated by bit error rate (BER) performance.

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“…The popular demodulation methods include intensity demodulation and phase demodulation [3][4][5][6]. The former method has merits of simple structure, fast speed, ease to implement, small size, and low cost.…”

Section: Introductionmentioning

confidence: 99%

An arc tangent function demodulation method of fiber-optic Fabry-Perot high-temperature pressure sensor

Ren

Hong

et al. 2017

Photonic Sens

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Abstract:A new demodulation algorithm of the fiber-optic Fabry-Perot cavity length based on the phase generated carrier (PGC) is proposed in this paper, which can be applied in the high-temperature pressure sensor. This new algorithm based on arc tangent function outputs two orthogonal signals by utilizing an optical system, which is designed based on the field-programmable gate array (FPGA) to overcome the range limit of the original PGC arc tangent function demodulation algorithm. The simulation and analysis are also carried on. According to the analysis of demodulation speed and precision, the simulation of different numbers of sampling points, and measurement results of the pressure sensor, the arc tangent function demodulation method has good demodulation results: 1 MHz processing speed of single data and less than 1% error showing practical feasibility in the fiber-optic Fabry-Perot cavity length demodulation of the Fabry-Perot high-temperature pressure sensor.

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Multiplexed Fiber Bragg Grating Interrogation System Using a Microelectromechanical Fabry–Perot Tunable Filter

Cited by 24 publications

References 23 publications

A novel algorithm based on DFB tunable laser array for demodulation of FBG sensors

A novel algorithm based on DFB tunable laser array for demodulation of FBG sensors

A novel scheme of generating multi-frequency spectral amplitude code labels by employing a single laser and a Fabry-Perot tunable filter

An arc tangent function demodulation method of fiber-optic Fabry-Perot high-temperature pressure sensor

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