Improving the Spatial Resolution of an OFDR Based on Recirculating Frequency Shifter

Jiaxiong Li; Jiangbing Du; Shuai Wang; Lu Li; Lin Sun; Xinyu Fan; Qingwen Liu; Zuyuan He

doi:10.1109/JPHOT.2015.2484283

IEEE Photonics Journal (Jan 2015)

Improving the Spatial Resolution of an OFDR Based on Recirculating Frequency Shifter

Jiaxiong Li,
Jiangbing Du,
Shuai Wang,
Lu Li,
Lin Sun,
Xinyu Fan,
Qingwen Liu,
Zuyuan He

Affiliations

Jiaxiong Li: State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Shanghai Jiao Tong Univ., Shanghai, China
Jiangbing Du: State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Shanghai Jiao Tong Univ., Shanghai, China
Shuai Wang: State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Shanghai Jiao Tong Univ., Shanghai, China
Lu Li: State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Shanghai Jiao Tong Univ., Shanghai, China
Lin Sun: State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Shanghai Jiao Tong Univ., Shanghai, China
Xinyu Fan: State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Shanghai Jiao Tong Univ., Shanghai, China
Qingwen Liu: State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Shanghai Jiao Tong Univ., Shanghai, China
Zuyuan He: State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Shanghai Jiao Tong Univ., Shanghai, China

DOI: https://doi.org/10.1109/JPHOT.2015.2484283
Journal volume & issue: Vol. 7, no. 5
pp. 1 – 10

Abstract

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We demonstrate a novel method for obtaining high spatial resolution optical frequency domain reflectometry (OFDR) utilizing recirculating frequency shifter for broadening the optical frequency sweeping. Twelve times broadened optical frequency sweeping is achieved. We obtain 0.97 cm spatial resolution over 710-m measurement range with modulation frequency sweeping span of 882 MHz. Such a spatial resolution corresponds to a frequency sweeping span of 10.31 GHz. The experimental results indicate that the measurement range can be extended to 10 km, based on the proposed method.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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