• Optoelectronics Letters
  • Vol. 8, Issue 6, 433 (2012)
Qi-liang LI*, Zi-yang WANG, Yong ZHANG, Tian-shu WANG, Ran ZENG, and Miao HU
Author Affiliations
  • Institute of Communication and Information, College of Communication Engineering, Hangzhou Dianzi University,Hangzhou 310018, China
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    Abstract

    Slowing down velocity and controlling time delay of optical pulses in fiber have many potential applications in optical communication systems, and a number of theoretical and experimental studies have been done. In this paper, the transmission spectrum and reflective spectrum of active fiber Bragg grating (FBG) couplers are studied, and the analytic expressions of dispersion and time delay are obtained. By changing the detuning and gain coefficient, different dispersions and time delays in active fiber Bragg grating coupler are obtained. The results show that different detunings and gain coefficients can result in various time delays, and thus tunable time delay could be achieved by changing signal frequency or gain coefficient.
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    LI Qi-liang, WANG Zi-yang, ZHANG Yong, WANG Tian-shu, ZENG Ran, HU Miao. Tunable time delay in active fiber Bragg grating coupler[J]. Optoelectronics Letters, 2012, 8(6): 433
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    Received: Jul. 12, 2012
    Accepted: --
    Posted: Jun. 1, 2012
    Published Online: Jul. 12, 2017
    The Author Email: Qi-liang LI (liqiliang2@yahoo.com.cn)