Title :
Optimization of SNR improvement in the noncoherent OTDR based on simplex codes
Author :
Lee, Duckey ; Yoon, Hosung ; Kim, Pilhan ; Park, Jonghan ; Park, Namkyoo
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., South Korea
Abstract :
This paper demonstrates signal-to-noise ratio (SNR) improvement of an optical time-domain reflectometer (OTDR) using simplex codes (scs) for the first time. By developing a generalized procedure for the analysis of noise transfer in the coded OTDR employing L-bit scs, the SNR dependence on the receiver bandwidth is also investigated. Experimental results obtained from a constructed sc-OTDR showed excellent agreement with theoretical results over entire code lengths. Improvement of the SNR up to 9.2 dB has been demonstrated using 255-bit scs.
Keywords :
codes; optical fibre communication; optical fibre testing; optical modulation; optical noise; optical receivers; optical time-domain reflectometry; L-bit ses; SNR; noise transfer; noncoherent OTDR; optical time-domain reflectometer; receiver bandwidth; signal-to-noise ratio; simplex codes; Optical fiber communication; Optical fiber testing; Optical noise; Optical pulses; Optical receivers; Probes; Signal to noise ratio; Spatial resolution; Spectroscopy; Time domain analysis; Coding gain; optical fiber communications; optical time-domain reflectometer (OTDR); simplex codes (scs);
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2005.859437
