Synthesis of broadband and flat parametric gain by idler loss in optical fiber

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• 作者：Kun Xu ; ^{xukun@bupt.edu.cn} ; Hongyao Liu ; Yitang Dai ; Jian Wu ; Jintong Lin
• 关键词：Parametric amplifier ; Gain spectrum ; Fiber loss
• 刊名：Optics Communications
• 出版年：2012
• 出版时间：1 March 2012
• 年：2012
• 卷：285
• 期：5
• 页码：790-794
• 全文大小：1174 K

文摘

Besides dispersion engineering, idler-band distributed fiber loss provides a new synthesis freedom to flatten and broaden the gain spectrum for a fiber-optic parametric amplifier. This interesting phenomenon is based on the fact that the power balance between signal and idler is broken by idler loss, which changes the power conversion process in four-wave-mixing. The pump-to-signal conversion efficiency is kept unchanged in spite of the loss.