论文部分内容阅读
采用幅度掩模和程控扫描曝光技术在经过氢载敏化处理的普通单模光纤上研制出了可用于实现掺铒光纤放大器增益谱平坦化的长周期光纤光栅器件。该器件使掺铒光纤放大器在３０ ｎｍ带宽上的增益谱波动从±３ ｄＢ减小为±０．３ ｄＢ， 器件的附加损耗小于０．３ ｄＢ。
The amplitude mask and programmable scanning exposure technique were used to fabricate a long-period fiber grating device which can be used to realize the gain spectrum flattening of erbium-doped fiber amplifier on an ordinary single-mode fiber that has been hydrogen-sensitized. This device reduces the gain spectrum fluctuation of the erbium-doped fiber amplifier from ± 3 dB to ± 0.3 dB over a 30 nm bandwidth with an additional loss of less than 0.3 dB.