Prof. Yin Liu Profile

Prof. Yin Liu

SPIE Involvement:

Author

Publications (2)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 13 December 2024 Paper

Fiber probe design for needle tip depth sensing in subretinal injection surgery based on SD-OCT

Zheng Yan, Yong Huang, Yin Liu, Xiaochen Li, Zhengyu Qiao, Qun Hao

Proceedings Volume 13503, 1350304 (2024) https://doi.org/10.1117/12.3046414

KEYWORDS: Optical coherence tomography

Read Abstract +

At present, there have been many studies using OCT technology to assist subretinal injection surgery. One of the research directions is to perceive the depth of needle penetration by collecting A-Line signal of tissue in real time. Most of the OCT systems in such solutions use a common optical path architecture, which basically does not require dispersion compensation, and the structure is simple, but the working distance is fixed. In this paper, a needle tip depth sensing SDOCT system was developed. Two types of ball lens fiber probes emitting quasi-parallel light were designed for use in air and water. The ball lens fiber probe used in water was fabricated. A probe, called a single-mode fiber probe, was manufactured by cutting the light emitting surface of a single-mode fiber using a fiber cleaver. Under the same conditions, in the water, the A-Line signal of the mirror collected by the SD-OCT system integrated with the ball lens fiber probe used in the water is stronger than that collected by the SD-OCT system integrated with the single-mode fiber probe. When collecting the A-Line signal of the mirror in water, the SD-OCT system integrated with the ball lens fiber probe used in the water has a longer working distance than the CP-SDOCT system integrated with the single-mode fiber probe. Finally, the needle tip depth sensing function of the system was tested through experiments.

Proceedings Article | 27 November 2023 Poster + Paper

Long working distance fiber probes for endoscopic optical coherence tomography imaging

Duanhong Zhang, Yong Huang, Xiaochen Li, Yin Liu, Qiang Jiang, Qun Hao

Proceedings Volume 12770, 127702C (2023) https://doi.org/10.1117/12.2687061

KEYWORDS: 3D printing, Design and modelling, Optical coherence tomography, Printing, Biological imaging, Endoscopy, Zemax, Intestine, Biological samples, Tissues

Read Abstract +

In endoscopic optical coherence tomography (EOCT), compact optical structure is often required for the fiber probe to access lumen tissues through a tortuous path. However, to achieve this, current endoscopic probes often have short working distance and complex fabrication technique. In this study, we report two fiber probes, which can be applied in long working distance endoscopic imaging. The first one is a ball lens probe, which consists of a beam expansion part composed of coreless optical fibers and a focusing and reflecting part composed of half ball lens. This method is a simple and low-cost probe fabrication technique that utilizes the surface tension of the molten material itself to form the ball lens on the fiber tip and creates reflective surface by sanding. The other one is a 3D micro printing probe, which consists of a coreless optical fiber part for beam expansion and a focusing and reflecting part composed of freeform micro-optics easily created by 3D micro printing technology. The freeform micro-optics created by this method can compensate for the influence of the catheter on light focusing, thereby enhancing imaging quality. We apply these two probes into a customized SD-OCT system to test the imaging on infrared cards, tapes, and various biological tissue samples. Both probes achieve imaging at a working distance of 6mm. In the future, the compact design, cost-effective and long working distance of our fiber probe will enable broader applications in more endoscopic catheter applications.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

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

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years