Wide-Range Continuously-Tunable Slow-Light Delay Line Based on Stimulated Brillouin Scattering

Through selectively controlling the stimulated Brillouin scattering in optical fibers with different lengths, a continuously tunable time-delay scheme enabling to work in a large range is proposed in this letter. This is realized by connecting a fixed long single-mode fiber (SMF) to one of the sever...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 25; no. 19; pp. 1920 - 1923
Main Authors Ju, Haijuan, Ren, Liyong, Lin, Xiao, Liang, Jian, Ma, Chengju
Format Journal Article
LanguageEnglish
Published IEEE 01.10.2013
Subjects
Delay effects
Delay lines
Delays
optical delay line
Optical fibers
Optical switches
Scattering
Slow light
stimulated Brillouin scattering (SBS)
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Summary:Through selectively controlling the stimulated Brillouin scattering in optical fibers with different lengths, a continuously tunable time-delay scheme enabling to work in a large range is proposed in this letter. This is realized by connecting a fixed long single-mode fiber (SMF) to one of the several selectable short SMFs that successively have an equal increment in length. These short-length fibers are, respectively, fixed to the different channels between two identical optical switches. Therefore, a wide-range and continuously tunable slow-light delay line can be constructed by changing the power of the pump beam, assisted by switching to different channels. In the experiment, a time delay from 0 to 201.29 ns is demonstrated for a five-channel configuration. A further large-range time delay can be expected if one adds the number of channels accordingly.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2013.2278536