Improvement of a measurement range of optical frequency domain reflectometry by a frequency-shifted feedback laser

Author

Nakamura, K. ; Hara, T. ; Yoshida, M. ; Ito, H.

Author_Institution

Dept. of Electr. Eng., Tohoku Univ., Sendai, Japan

fYear

1999

fDate

28-28 May 1999

Firstpage

19

Lastpage

20

Abstract

Summary form only given. Optical reflectometry is of importance in various fields such as diagnostics of optical communication network, fiber optic sensors and so on. To implement these applications, it is favorable to achieve a better spatial resolution than 1 cm over an operating range of tens of kilometers. Such performance, however, has not yet been reported as far as we know. Recently we demonstrated an optical frequency domain reflectometry (OFDR) using a frequency-shifted feedback (FSF) laser, and a distance of 3.7 km was measured with a spatial resolution of 9.4 mm. In the paper we demonstrate a long distance (>10 km), high resolution (/spl sim/1 cm) OFDR by the FSF laser.

Keywords

laser feedback; laser ranging; optical resolving power; reflectometry; 10 km; 3.7 km; diagnostics; fiber optic sensors; frequency-shifted feedback laser; measurement range; operating range; optical communication network; optical frequency domain reflectometry; optical reflectometry; performance; spatial resolution; Frequency domain analysis; Frequency measurement; Laser feedback; Optical feedback; Optical fiber communication; Optical fiber networks; Optical sensors; Reflectometry; Spatial resolution; State feedback;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 1999. CLEO '99. Summaries of Papers Presented at the Conference on

Conference_Location

Baltimore, MD, USA

Print_ISBN

1-55752-595-1

Type

conf

DOI

10.1109/CLEO.1999.833820

Filename

833820