COHERENT SELF-HETERODYNE BRILLOUIN OTDR FOR MEASUREMENT OF BRILLOUIN FREQUENCY-SHIFT DISTRIBUTION IN OPTICAL FIBERS

被引:105
作者
SHIMIZU, K
HORIGUCHI, T
KOYAMADA, Y
KURASHIMA, T
机构
[1] NTT Telecommunication Field Systems, R & D Center
关键词
D O I
10.1109/50.293961
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Time domain reflectometry of spontaneously Brillouin scattered lightwaves in a single-mode optical fiber is demonstrated with a coherent self-heterodyne detection system employing a recently proposed frequency translator, a DFB laser diode, and erbium-doped fiber amplifiers. Since the probe pulse frequency is up-converted by the translator by an amount approximately equal to the Brillouin frequency shift, the self-heterodyne beat frequency can be reduced to a sufficiently low frequency in the IF band. The system enables one-end measurement of the Brillouin frequency shift distribution in optical fibers with a single way dynamic range (SWDR) of 16 dB and a frequency resolution of 5 MHz for a spatial resolution of 100 m.
引用
收藏
页码:730 / 736
页数:7
相关论文
共 20 条
[1]  
AGRAWAL GP, 1989, NONLINEAR FIBER OPTI, pCH9
[2]  
AIDA K, 1992, P EUROPEAN C OPTICAL, V1, P437
[3]   ANALYSIS OF THE BACKSCATTERING METHOD FOR SINGLE-MODE OPTICAL FIBERS [J].
BRINKMEYER, E .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA, 1980, 70 (08) :1010-1012
[4]  
Cotter D., 1983, Journal of Optical Communications, V4, P10, DOI 10.1515/JOC.1983.4.1.10
[5]   PULSED OPERATION OF AN OPTICAL FEEDBACK FREQUENCY-SYNTHESIZER [J].
HODGKINSON, TG ;
COPPIN, P .
ELECTRONICS LETTERS, 1990, 26 (15) :1155-1157
[6]  
HORIGUCHI H, 1992, DISTRIBUTED MULTIPLE, V2, P2
[7]   A TECHNIQUE TO MEASURE DISTRIBUTED STRAIN IN OPTICAL FIBERS [J].
HORIGUCHI, T ;
KURASHIMA, T ;
TATEDA, M .
IEEE PHOTONICS TECHNOLOGY LETTERS, 1990, 2 (05) :352-354
[8]  
Horiguchi T., 1990, Transactions of the Institute of Electronics, Information and Communication Engineers B-I, VJ73B-I, P144
[9]  
IZUMITA H, 1990, T IEICE JAPAN J, V73, P144
[10]  
KING JP, 1987, J LIGHTWAVE TECHNOL, V5, P167