High-order phase-shifted Bragg grating waveguide sensor for ultrasound detection

Peijian Li; Chao Zhao; Chonglei Zhang

doi:10.1117/12.3035070

3 September 2024 High-order phase-shifted Bragg grating waveguide sensor for ultrasound detection

Peijian Li, Chao Zhao, Chonglei Zhang

Author Affiliations +

Proceedings Volume 13227, 2024 AI Photonics Technology Symposium; 1322705 (2024) https://doi.org/10.1117/12.3035070
Event: 2024 AI Photonics Technology Symposium, 2024, Wuhan, China

Abstract

Photoacoustic endoscopy (PE) is an emerging medical imaging technology that combines optical and acoustic imaging modalities, enabling high-resolution imaging of tissues inside the body. Compared to traditional piezoelectric sensors, optical sensors offer advantages in sensitivity, bandwidth, and size, making them suitable for PE applications. This paper demonstrates a high-order phase-shifted Bragg grating waveguide (HP-BGW) fabricated by two-photon polymerization 3D printing as an ultrasonic sensor. The grating is designed to achieve a high transmittance, and sharp line shape in resonant transmission so that enhancing the sensor's sensitivity. The proposed sensor is easy to manufacture and features a wide bandwidth and small size, making it suitable for photoacoustic endoscopy applications. The sensor was characterized using a spectrometer and ultrasound transducers, achieving a Q-factor of approximately 1×10^4 with a bandwidth of around 25MHz and a dynamic range of at least 29MHz.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Peijian Li, Chao Zhao, and Chonglei Zhang "High-order phase-shifted Bragg grating waveguide sensor for ultrasound detection", Proc. SPIE 13227, 2024 AI Photonics Technology Symposium, 1322705 (3 September 2024); https://doi.org/10.1117/12.3035070

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE