【摘要】 报道了利用在未泵浦掺铒光纤中，驻波饱和吸收诱发的自写入光纤光栅的窄带滤波特性及反射波长自适应特性，研制了单频光纤激光器，其线宽可窄至 ０．５ ｋＨｚ以下，输出光功率大于 １ｄＢｍ，不跳模时间大于３小时．通过零拍法成功地观测了跳模时的谱特性．更多还原

【Abstract】 A stable single-frequency fiber ring laser with linewidth less than 0.5 kHz is presented, in which the self-written fiber grating induced by saturable absorption inner an unpumped Er3+ doped fiber at the standing-wave section is applied. Its power is more than 1 dBm and the lasting time of no mode-hopping is more than 3 hours. The RF spectra were measured by the homodyne method, when the mode-hopping occured.更多还原