High dynamic range distributed acoustic sensing based on dual-wavelength fiber Bragg grating pairs

2021 ◽  
Author(s):  
Jun Wu ◽  
Zhengying Li ◽  
Xuelei Fu ◽  
Minlang Fan ◽  
Xin Gui ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Dynamic Range ◽  
High Dynamic Range ◽  
Dual Wavelength ◽  
Bragg Grating ◽  
Acoustic Sensing ◽  
High Dynamic ◽  
Distributed Acoustic Sensing

scholarly journals SOI-Based Multi-Channel AWG with Fiber Bragg Grating Sensing Interrogation System

Photonics ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 214
Author(s):  
Siming Weng ◽  
Pei Yuan ◽  
Wei Zhuang ◽  
Dongliang Zhang ◽  
Fei Luo ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Dynamic Range ◽  
High Dynamic Range ◽  
High Rate ◽  
Bragg Grating ◽  
Arrayed Waveguide Grating ◽  
High Agreement ◽  
High Dynamic ◽  
Critical Components ◽  
Arrayed Waveguide

For the development of minimized and high-rate photonic-integrated fiber Bragg grating interrogation (FBGI) systems, arrayed waveguide grating (AWG) has been widely used as one of the critical components. In this paper, we present an 8-channel SOI-based AWG for a photonic integrated FBG interrogation microsystem. The channel spacing of the AWG is designed to be 3 nm to meet a high-dynamic-range demodulation requirement. The core size of the fabricated AWG is about 335 × 335 μm2. The simulation results and experimental results are in high agreement, showing that AWG has a fine transmission spectrum with crosstalk below −16 dB, nonuniformity below 0.4 dB, insertion loss below −6.35 dB, 3 dB bandwidth about 1.3 nm and 10 dB bandwidth of 2.3 nm. The proposed AWG can be applied perfectly to the SOI-based AWG demodulation microsystem, exhibiting a large dynamic range of 1.2 nm, the resolution for measurements is 1.27 pm and a high accuracy of 20.6 pm.

High Dynamic Range Microwave Photonic Link Based on Dual-Wavelength Dual-Parallel Modulation

2015 ◽  
Vol 42 (1) ◽  
pp. 0105003
Author(s):  
李向华 Li Xianghua ◽  
杨春 Yang Chun ◽  
崇毓华 Chong Yuhua ◽  
周正华 Zhou Zhenghua
Keyword(s):  
Dynamic Range ◽  
High Dynamic Range ◽  
Dual Wavelength ◽  
Microwave Photonic ◽  
High Dynamic

High-dynamic-range interferometric bragg-cell spectrum analyser

1986 ◽  
Vol 133 (1) ◽  
pp. 26
Author(s):  
J. Mellis ◽  
G.R. Adams ◽  
K.D. Ward
Keyword(s):  
Dynamic Range ◽  
High Dynamic Range ◽  
Spectrum Analyser ◽  
High Dynamic
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