Fiber Bragg grating sensor interrogation system based on an optoelectronic oscillator loop

Xu, Zuowei; Shu, Xuewen; Fu, Hongyan

doi:10.1364/oe.27.023274

Cited by 35 publications

(7 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With the development of microwave photonics (MWP) technology, the interrogation scheme of optical fiber sensor using MWP has attracted wide attention [15,16] . The basic principle of the MWP-based interrogation method is mapping the optical change to the change of the electrical signal, such as the change of the frequency transmission response of the microwave photonics link [15] , intensity change [17] or phase shift [18] of the microwave signals [19] . Optoelectronic oscillator (OEO) can produce high-frequency microwave signals with high spectral purity, high stability and low phase noise.…”

Section: Introductionmentioning

confidence: 99%

Coupled optoelectronic oscillator based strain sensor with extended measurement range

Tang

Deng

Gao

et al. 2023

14th International Photonics and Optoelectronics Meetings (POEM 2022)

View full text Add to dashboard Cite

We have proposed and experimentally demonstrated optical fiber strain sensor with a extended dynamic range based on a coupled optoelectronic oscillator (COEO). The oscillation frequency equals to the mode spacing of the laser that is affected by the axial strain applied to the cavity. Thus, we can evaluate the strain by measuring the oscillation frequency shift. A proof-of-concept experiment is carried out. The dynamic range is up to 10000 μ. The sensitivity is 13.8 Hz/μ for 2700 MHZ. The COEO has a maximum frequency drift range of ±303.907 Hz for 2700 MHz within 90 minutes, and the corresponding measurement error is ±20 μ . The scheme has the advantages of high precision and high speed.

show abstract

Section: Introductionmentioning

confidence: 99%

Coupled optoelectronic oscillator based strain sensor with extended measurement range

Tang

Deng

Gao

et al. 2023

14th International Photonics and Optoelectronics Meetings (POEM 2022)

View full text Add to dashboard Cite

show abstract

“…Indeed, with OEOs it is possible to carry out the measurement or sensing of length, refractive index, temperature, angular velocity, load, strain, lowpower RF signal, magnetic field, amongst others (see Refs. [8][9][10][11][12][13][14][15][16] and references therein). For this purpose, several architectures were proposed for the efficiency of the method.…”

Section: Introductionmentioning

confidence: 99%

Efficient sensings of temperature, refractive index, and distance measurement using the cubic-nonlinear optoelectronic oscillators

2022

View full text Add to dashboard Cite

show abstract

“…The oscillating frequency of the OEO is determined by the overall time delay of the loop, which will be affected by the wavelength change of the sensing FBG. According to this concept, another approach to implement an OEO-based FBG sensor has been proposed for position location [15], axial strain detection [16] and magnetic field measure [17]. In [16], an interrogation scheme for normal FBG sensors employing an OEO loop containing a dispersive medium have been proposed.…”

Section: Introductionmentioning

confidence: 99%

“…According to this concept, another approach to implement an OEO-based FBG sensor has been proposed for position location [15], axial strain detection [16] and magnetic field measure [17]. In [16], an interrogation scheme for normal FBG sensors employing an OEO loop containing a dispersive medium have been proposed. The sensitivity is about 58 Hz/μɛ, which will not satisfy some requirements of extremely small axial strain measurements.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity Enhancement for Fiber Bragg Grating Strain Sensing Based on Optoelectronic Oscillator With Vernier Effect

et al. 2021

View full text Add to dashboard Cite

Based on a dual-loop optoelectronic oscillator (OEO) with Vernier effect, a scheme of fiber Bragg grating (FBG) interrogation system with an improved scale factor has been proposed and experimentally demonstrated. Functioning as the optical carrier of the OEO, the reflection signal of two cascaded FBGs is divided into two optical beams by using a wavelength division multiplexer (WDM). The two optical beams at different wavelengths travel along single mode fibers with different lengths. After combined together by another WDM, the two optical beams go through a section of dispersion compensation fiber (DCF). The oscillating frequency shift of the OEO is determined by the overall time delay, which is affected by the wavelength change of the sensing FBG. Thus, the wavelength change of the sensing FBG can be converted into the oscillating frequency shift of the OEO. Furthermore, due to the length difference between the two optical beams, an obvious Vernier effect has been generated in the frequency response of the OEO. By detecting the frequency shift of the envelope peak of the frequency response curve, the sensitivity of the sensing interrogation can be enhanced greatly. A proof-of-concept OEO-based FBG sensor for axial strain sensing experiment is performed. The experimental results show that the sensitivity is about 0.31 KHz/μɛ for a single-loop OEO. By employing Vernier effect, the sensitivity can be improved to -11 KHz/μɛ, which is 35 times higher than that of the single-loop OEO.

show abstract

Fiber Bragg grating sensor interrogation system based on an optoelectronic oscillator loop

Cited by 35 publications

References 30 publications

Coupled optoelectronic oscillator based strain sensor with extended measurement range

Coupled optoelectronic oscillator based strain sensor with extended measurement range

Efficient sensings of temperature, refractive index, and distance measurement using the cubic-nonlinear optoelectronic oscillators

Sensitivity Enhancement for Fiber Bragg Grating Strain Sensing Based on Optoelectronic Oscillator With Vernier Effect

Contact Info

Product

Resources

About