Demodulation of Acoustic Signals in Fiber Bragg Grating Ultrasonic Sensors Using Arrayed Waveguide Gratings

2006 ◽  
Vol 45 (5B) ◽  
pp. 4577-4579 ◽  
Author(s):  
Takuma Fujisue ◽  
Kentaro Nakamura ◽  
Sadayuki Ueha
Keyword(s):  
Fiber Bragg Grating ◽  
Acoustic Signals ◽  
Bragg Grating ◽  
Ultrasonic Sensors ◽  
Arrayed Waveguide Gratings ◽  
Waveguide Gratings ◽  
Arrayed Waveguide

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.

3D Micromolding of Arrayed Waveguide Gratings on Upconversion Luminescent Layers for Flexible Transparent Displays without Mirrors, Electrodes, and Electric Circuits

2015 ◽  
Vol 25 (28) ◽  
pp. 4390-4396 ◽  
Author(s):  
Satoshi Watanabe ◽  
Takeo Asanuma ◽  
Takafumi Sasahara ◽  
Hiroshi Hyodo ◽  
Mutsuyoshi Matsumoto ◽  
...  
Keyword(s):  
Arrayed Waveguide Gratings ◽  
Electric Circuits ◽  
Waveguide Gratings ◽  
Arrayed Waveguide
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