A new type of fiber grating, cladding index modulated fiber grating, is presented in this paper.
本文提出了一种新型结构的光纤光栅——包层折射率调制光纤光栅。
Through exposing the cladding photosensitive fiber to periodic ultraviolet, the new cladding index modulated fiber grating can be formed.
新型包层折射率调制光栅可以由包层掺杂的光敏光纤经过侧面紫外曝光制成。
By the theory of ray optics, the bend losses of fiber as function of fiber parameters such as core index, cladding index, core radius and bend radius are set up.
利用光线理论研究光纤弯曲损耗与弯曲半径、纤芯折射中以及包层折射率的关系。
The core has a high index of refraction, whereas the surrounding cladding, with its air holes interspersed with silica, has a lower index.
核心的石英折射系数高，环绕在外的外层石英与孔洞交错，所以折射系数较低。
After the simulation, the relationship of fundamental mode loss with the core index, wavelength and the diameter of cladding air holes is given.
通过模拟，给出基模损耗同芯折射率、光波长和包层空气孔直径之间的一般规律。
In order to calculate the equivalent step index of the periodic structure of the cladding holey optical fiber, all-vectorial fundamental space filling mode approach was utilized.
为了计算周期结构包层多孔光纤的等效阶跃折射率，采用了全矢量基本空间充填模式法。
The index of the core is a little smaller than that of the cladding base material, so the fundamental mode loss of short wavelength increases rapidly and leads to the mode cutoff.
这种光纤的纤芯折射率比包层基质折射率小，所以短波长时基模损耗迅速增大，使得光传输截止。
Then the simplified model for the LPFG is deduced with ignoring longitudinal coupling of modes and coupling of cladding modes themselves, and also assuming the modulation of refractive index exis...
忽略轴向的模式耦合以及包层模式之间的相互耦合作用，并认为折射率指数的调制只存在于纤芯中，建立了简化的长周期光纤光栅数学模型。
With this model, the effective index of PCF cladding with different structure parameters was discussed.
应用此模型对不同结构光子晶体光纤包层区的等效折射率与波长的关系进行了讨论。
A new refractive index sensing scheme based on the cladding modes of fiber Bragg grating (FBG) is presented.
提出了基于光纤布拉格光栅(FBG)包层模式的折射率传感方案。
Coaxial fibers are different from conventional fibers. The index of the inner cladding is higher than that of the core and outer cladding.
环形光纤不同于普通光纤，它的内包层折射率比芯子和外包层都大。
The concept of equivalent refractive index of cladding is introduced from the equivalent refractive index method, which can rule out the false solutions of FEM.
引入了等效折射率法中的包层等效折射率的概念，排除了有限元法计算导致的伪解。
High order guided mode in double metal-cladding waveguide is more sensitive to the refractive index variation of the polymer guiding layer by comparing with low order guided mode.
双面金属包覆波导高阶导模对聚合物薄波导层的折射率变化比低阶导模更敏感。
The covering material that encases the core of an optical fiber. the cladding material usually has a lower index of refraction than the core material and may be either glass or plastic.
一种包装光纤芯的保护材料。保护材料的折射率通常比光纤芯的折射率低，它一般是玻璃或塑料。
Resolve dispersion equation and obtain the effective refractive index of cladding using method of numerical calculation.
推导出纤芯、包层、薄膜层、环境层的场分布表达式，利用数值计算求出了包层膜的有效折射率。
As the refractive index of the overlay is higher than that of the cladding, the Long Period fiber Grating (LPG) element exhibits high sensitivity.
对于涂覆长周期光纤光栅(LPG)传感元件，涂覆层折射率大于包层折射率时将具有很高的灵敏度。
The WMOC ROM a low-index and transparent silicon rubber as the cladding layer material, and takes the advantage of soft lithography method to copy information to its surface at the same time.
采用折射率高的薄波片作为芯层材料、折射率低的透明硅橡胶作为包层材料，利用软刻印方法将信息复制在硅橡胶表面，制作出10层光卡。
The WMOC ROM a low-index and transparent silicon rubber as the cladding layer material, and takes the advantage of soft lithography method to copy information to its surface at the same time.
采用折射率高的薄波片作为芯层材料、折射率低的透明硅橡胶作为包层材料，利用软刻印方法将信息复制在硅橡胶表面，制作出10层光卡。
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