Mr. Dingfan Zhang Profile

Dingfan Zhang

SPIE Involvement:

Author

Publications (1)

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 | 9 January 2023 Paper

A low cost rotational seismometer for seismic exploration

Junzhu Wu, Dingfan Zhang, Chao Rong, Lanxin Zhu, Yuwen Cao, Zhengbin Li

Proceedings Volume 12507, 125072A (2023) https://doi.org/10.1117/12.2656429

KEYWORDS: Fiber optic gyroscopes, Signal detection, Polarization, Signal processing, Gyroscopes, Modulation, Ferroelectric materials, Optical fibers, Light sources, Interference (communication)

Read Abstract +

In recent years, with the development of rotation direct measurement instruments, rotational seismology has gradually become a hot field, and it is proposed that observation needs high sensitivity. The rotational seismometer based on fiber optic gyroscopes (FOG) has gradually become the preferred choice for seismic rotation observation due to its insensitivity to translational motion, fully solid state and high sensitivity. In order to meet the demands of multi station observation network in seismic exploration, the FOG which is the core sensing element of the rotational seismometer, needs to have the characteristics of high sensitivity and low cost. In this paper, a budget-friendly dual-polarization FOG scheme based on a Lyot depolarizer is proposed, and the ports difference method is employed to suppress the short-time noise and improve the sensitivity. The experiment adopts 2km polarization maintaining fiber ring, and the two ports have stable output. After the difference of the two port signals, the self-noise over 0.03Hz~50Hz is reduced from 260nrads^-1Hz^-1/2 to 120nrads^-1Hz^-1/2. It shows that the rotational seismometer using this structure has low cost and high sensitivity, and has a good application prospect.

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