Mr. Hang Gu Profile

Hang Gu

at Taiyuan Univ of Technology

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 | 20 December 2019 Paper

Influence of electrical filter bandwidth on the performance of frequency-scanning BOTDR

Qinglin Wang, Qing Bai, Hang Gu, Wei Yan, Changshuo Liang, Jingsheng Li, Baoquan Jin

Proceedings Volume 11209, 112095H (2019) https://doi.org/10.1117/12.2550220

KEYWORDS: Optical filters, Spatial resolution, Signal detection, Bandpass filters, Analytical research, Temperature metrology, Modulation, Optical fibers

Read Abstract +

Frequency scanning is a common method of BOTDR demodulation Brillouin gain spectrum (BGS). In the frequency scanning process, the electrical band-pass filter is important, and the bandwidth of the electrical filter has an effect on the performance of BOTDR. This paper focuses on the influence of band-pass filter (BPF) bandwidth on the measurement spectral width of BGS and spatial resolution of the frequency-scanning Brillouin optical time domain reflectometer (FSBOTDR), which further affects the measuring performance of BOTDR. The law of BFS accuracy and spatial resolution (SR) with filter bandwidth is theoretically investigated by analyzing the work principle of FS-BOTDR in numerical and evaluating the Brillouin gain spectrum width. Five filters with bandwidths of 40MHz, 55MHz, 70MHz, 85MHz, 100MHz in 700MHz center frequency is selected to compare the spatial resolution and BFS accuracy, which depend on the BGS spectral width. The analyzing and experimental results show that the spatial resolution improves with increasing the filtering bandwidth. When filter bandwidth increases, the BGS spectral width could be broadened, means the sensitivity of the filter output power to the frequency shift is decreased, which caused the reducing of measurement accuracy. The research can be a theoretical basis and experimental guidance on the choosing of filter bandwidth for FSBOTDR.

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