Mr. Zhenjin Cen Profile

Zhenjin Cen

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 | 30 April 2024 Paper

Suppression of fading in Ф-OTDR systems based on phase-modulated optical frequency combs

Ye Cai, Zhenjin Cen, Tailong Lv, Yining Zhang, Xiaowei Huang, Yuyang Zhang, Chi Cai, Yanyang Lei, Xiaohui Tang

Proceedings Volume 13154, 131540R (2024) https://doi.org/10.1117/12.3020769

KEYWORDS: Frequency modulation, Vibration, Signal detection, Bragg cells, Modulation, Sensing systems, Modulation frequency, Phase modulation, Phase shift keying, Frequency combs

Read Abstract +

A new method of suppressing the fading effect of phase-sensitive optical domain-of-view reflectometer (Φ-OTDR) by using a phase-modulated frequency comb is presented in this paper. The distribution of fading points is different, so frequency division multiplexing (FDM) radiation can be used to suppress the fading effect. In the experimental system of this paper, firstly, frequency comb continuous light is generated by phase modulation; Then, different Rayleigh backscattering (RBS) intensity distributions are generated by pulse detection light modulating and injecting into the sensing fiber. Finally, the intensity distribution of RBS is extracted by amplitude estimation method. The phase is processed to eliminate the missing truth. The fading suppression is realized by our system, and the suppression effect is evaluated. By using a constant amplitude optical frequency comb with seven frequency components, the fading probability of the system is drastically reduced from 5.49%-9.83% to 0.08%. The method proposed in this paper has larger modulation bandwidth and more flexible frequency combination scheme, which can better suppress the fading effect. This method does not sacrifice the response bandwidth of the system, and can accurately control the phase delay, so it is very helpful to fully suppress the fading effect.

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