Polarization properties of fused fiber couplers and polarizing beamsplitters
Polarization properties of fused fiber couplers and polarizing beamsplitters
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DOI：
10.1109/50.97638
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发表时间：
1991-11
影响因子：
4.7
通讯作者：
K. Morishita;K. Takashina
中科院分区：
文献类型：
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作者：
K. Morishita;K. Takashina
通过改变光纤束腰截面形状，对光纤束腰的偏振特性进行了实验研究。对不同截面形状的光纤耦合器进行了x、y偏振光耦合差的研究。在实验结果的基础上，制作了两个长宽比为1.1和1.8的偏振分束器，并测量了它们的色度特性。显然，要制造功率传输周期短的偏振分束器，即长光谱周期，长宽比应大于1.7。长宽比为1.1和1.8的偏振分光器对x偏振光的分光比分别为17.6和-12.7 dB，对γ偏振光的分光比分别为-16.1和11.7 dB。它们的损失分别小于0.6和0.3 dB。>
The polarization properties of fused taped fiber couplers were investigated experimentally by changing cross-sectional shapes at the coupler waist. The coupling difference between x and y polarized light was studied for many test fused fiber couplers with various cross-sectional shapes. On the basis of the experimental results, two polarizing beamsplitters with the aspect ratio of 1.1 and 1.8 were produced, and their chromatic characteristics were measured. It was evident that the aspect ratio should be more than 1.7 to manufacture polarizing beamsplitters with few power transfer cycles, i.e. long spectral period. Splitting ratios of polarizing beamsplitters with the aspect ratio of 1.1 and 1.8 were 17.6 and -12.7 dB for x polarized light and -16.1 and 11.7 dB for gamma polarized light, respectively. Their losses were less than 0.6 and 0.3 dB. >