Acta Optica Sinica, Volume. 30, Issue 5, 1254(2010)
Theoretical Study of Brillouin Slow Light Using Broadband Pump with Rectangular Spectrum
The delay characteristic of the Brillouin slow light using broadband pump with rectangular spectrum is analyzed. Analytical expressions of the time delay,the pulse-width broadening ratio and the gain of a Gaussian pulse are deduced under small-signal gain approximation. Calculated results show that the analytical solution and the numerical solution agree well and the Gaussian signal pulse can achieve zero-broadening delay,when its 10 dB bandwidth is not greater than 0.357-fold pump bandwidth. The maximum Brillouin gain bandwidth for a broadband pump with single rectangular spectrum is 20 GHz,indicating that zero-broadening delay of the Gaussian pulse with full-width at half maximum of about 100 ps can be achieved. Broadband pump light with rectangular spectrum is more favorable for reducing the pulse distortion than that with Gaussian spectrum.
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Zhang Zhiyao, Zhou Xiaojun, Liang Rui, Shi Shenghui, Qin Zujun, Liu Yong. Theoretical Study of Brillouin Slow Light Using Broadband Pump with Rectangular Spectrum[J]. Acta Optica Sinica, 2010, 30(5): 1254
Category: Fiber Optics and Optical Communications
Received: May. 20, 2009
Accepted: --
Published Online: May. 11, 2010
The Author Email: Zhiyao Zhang (zhangzhiyao@uestc.edu.cn)