Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Chalcogenide microfiber-assisted silica microfiber for ultrasound detection

Not Accessible

Your library or personal account may give you access

Abstract

An ultra-compact ultrasound sensor with a chalcogenide (ChG) microfiber and a silica microfiber is fabricated. It can detect the ultrasound wave generated by a piezoelectric transducer peaked at 3.7 MHz. The sensor shows the broadband ultrasound frequency response with a high signal-to-noise ratio (SNR), owing to the high refractive index and small Young’s modulus of ChG material. A ChG (${{\rm As}_2}{{\rm Se}_3}$) microfiber of 2 µm diameter is adhered to the surface of a silica microfiber with a diameter of 5 µm via Van der Waals force; the transmission spectrum has high contrast due to multi-mode interference in this hybrid structure. The SNR response could be up to 70 dB, especially at low frequency due to the soft ChG microfiber as a sensing unit to magnify the ultrasound signal, along with an SNR over 12 dB at ultrasound of 31.2 MHz. As a comparison, a silica taper with the same size as the ChG microfiber is also placed on the silica microfiber with a diameter of 5 µm to detect an ultrasound signal from 18 kHz to 9.4 MHz with an SNR lower than that based on the ChG microfiber up to 38.8 dB, showing the high sensitivity of the ChG microfiber.

© 2020 Optical Society of America

Full Article  |  PDF Article
More Like This
Ultracompact twisted silica taper for 20 kHz to 94 MHz ultrasound sensing

Huibo Fan, Wenwen Ma, Liang Chen, and Xiaoyi Bao
Opt. Lett. 45(14) 3889-3892 (2020)

Broadband ultrasound sensing based on fused dual-core chalcogenide-PMMA microfibers

Haiyang Wang, Chams Baker, Liam Kelly, Pedro Tovar, Liang Chen, and Xiaoyi Bao
Opt. Express 30(6) 8847-8856 (2022)

Mid-infrared microfiber Bragg gratings

Dawei Cai, Yu Xie, Pan Wang, Lei Zhang, Xin Guo, and Limin Tong
Opt. Lett. 45(22) 6114-6117 (2020)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics

Select as filters


Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved