Measurement of gain saturation coefficient of a DFB laser for lasing mode control by orthogonal polarization light
Measurement of gain saturation coefficient of a DFB laser for lasing mode control by orthogonal polarization light
复制标题
正交偏振光激光模式控制 DFB 激光器增益饱和系数的测量
DOI：
10.1109/3.97268
复制
发表时间：
1991
影响因子：
2.5
通讯作者：
M. Watanabe
中科院分区：
文献类型：
--
作者：
H. Yasaka;Y. Yoshikuni;M. Watanabe
用偏振方向与激光器激射模式正交的入射光测量了1.55 μ m分布反馈（DFB）激光器的频率响应。通过将注入光的偏振调整为与激射模式的偏振正交，并通过将其波长设置为与激射模式的波长略有不同，来仔细选择注入光（称为正交偏振光），使其不耦合到激射模式。然而，正交偏振光的波长被设置在激光器的有源层具有增益的范围内。激光的增益饱和系数为4.7 × 10 ~（-23）cm/sup ~ 2/，正交偏振光（与激光波长几乎相同）的增益饱和系数为3.7 × 10 ~（-23）cm/sup ~ 2/。>
The frequency response of a 1.55- mu m distributed feedback (DFB) laser is measured by injecting light which has an orthogonal polarization to the laser's lasing mode. The injected light, termed as orthogonal polarization light, is carefully selected to not couple to the lasing mode by adjusting its polarization to be orthogonal to that of the lasing mode and by setting its wavelength slightly different from that of the lasing mode. The wavelength of the orthogonal polarization light, however, is set within the range where the laser's active layer has a gain. The gain saturation coefficients for the lasing light are estimated to be 4.7*10/sup -23/ cm/sup 2/ and that by the injected orthogonal polarization light (almost the same wavelength as the lasing mode) are 3.7*10/sup -23/ cm/sup 2/, respectively. >