光学
材料科学
曲率
纤维
多模光纤
分歧(语言学)
归一化频率(单位)
波长
标准差
光纤
折射率
兰姆达
物理
数学
复合材料
统计
几何学
语言学
哲学
锁相环
频率合成器
相位噪声
作者
Mitsuhiro Tateda,Shigeyuki Seikai,Naoya Uchida
出处
期刊:Applied optics
[The Optical Society]
日期:1980-03-01
卷期号:19 (5): 765-765
摘要
Frequency response of graded-index multimode fibers, whose index profile parameter alpha deviates from the optimum value, is investigated both theoretically and experimentally. The frequency response of the fiber with optimum alpha diverges periodically. However, that of the fiber with nonoptimum a does not exhibit periodic divergence but has periodic curvature changing points whose period is inversely proportional to the amount of alpha deviation. The period is about a fifth of the divergence period of the fiber with optimum alpha when the alpha deviation is 0.1. The optimum a difference between lambda = 0.82 and 1.27, microm is found to be 0.07 for GeO(2)-P(2)O(5)-doped silica fibers by measurement of frequency responses at these wavelengths.
科研通智能强力驱动
Strongly Powered by AbleSci AI