Sakai J, Kimura T
Appl Opt. 1978 Nov 15;17(22):3653-9. doi: 10.1364/AO.17.003653.
Splicing and bending losses are compared among step, power-law, W, ring-shaped, and M.W index singlemode optical fibers. A product of normalized offset and tilt misalignments D(N)Phi(N)is introduced to compare the permissible offset and tilt misalignments among these fibers. Permissible offset misalignment can be evaluated by D(N)/B(?) under constant bending loss condition. Here, B denotes the bending loss parameter. Numerical calculations on these parameters reveal that the required splicing accuracy is nearly identical for step, power-law, and W fibers. An index dip at the core center seems to cause deleterious effects on the splicing loss, provided that the fiber bending loss is kept constant. The effects of profile parameters on D(N)Phi(N) and D(N)/B(?) are investigated in detail.
对阶跃型、幂律型、W型、环形和MW型单模光纤的熔接损耗和弯曲损耗进行了比较。引入了归一化偏移和倾斜失准的乘积D(N)Phi(N)，以比较这些光纤之间允许的偏移和倾斜失准。在恒定弯曲损耗条件下，允许的偏移失准可以通过D(N)/B(?)来评估。这里，B表示弯曲损耗参数。对这些参数的数值计算表明，阶跃型、幂律型和W型光纤所需的熔接精度几乎相同。如果光纤弯曲损耗保持恒定，纤芯中心的折射率凹陷似乎会对熔接损耗产生有害影响。详细研究了剖面参数对D(N)Phi(N)和D(N)/B(?)的影响。
