Optical time-domain reflectometer performance improvement using complementary correlated Prometheus orthonormal sequence

Author

Sahu, P.K. ; Gowre, S.C. ; Mahapatra, S.

Author_Institution

Dept. of Electron. & Electr. Commun. Eng., Indian Inst. of Technol., Kharagpur

Volume

2

Issue

3

fYear

2008

fDate

6/1/2008 12:00:00 AM

Firstpage

128

Lastpage

133

Abstract

The authors deal with the pulse spreading approach using complementary correlated Prometheus orthonormal sequence (CCPONS) to enhance the performance of the optical time-domain reflectometer (OTDR). The approach has the advantage of reduced measurement time when compared with the OTDRs designed using the conventional or Hadamard derived codes. Also, it offers an improved dynamic range when compared with the conventional OTDR. We have demonstrated experimentally a high performance OTDR based on a CCPONS coding scheme and using a low-power Fabry Perot-laser diode. Using a 64-bit CCPONS coding, a one-way signal-to-noise ratio improvement of 3.7 dB was achieved over a conventional OTDR under the same measurement conditions, that is, for the same measurement time (20 000 averages) and same peak power (100 W).

Keywords

Fabry-Perot resonators; optical correlation; optical time-domain reflectometry; reflectometers; semiconductor lasers; sequential codes; CCPONS coding scheme; OTDR; complementary correlated Prometheus orthonormal sequence; improved dynamic range; low-power Fabry Perot-laser diode; measurement time reduction; one-way signal-to-noise ratio improvement; optical time-domain reflectometer performance enhancement; pulse spreading approach;

fLanguage

English

Journal_Title

Optoelectronics, IET

Publisher

iet

ISSN

1751-8768

Type

jour

DOI

10.1049/iet-opt:20070080

Filename

4543890