V2EX waveguide dispersion

Waveguide Dispersion

释义 Definition

波导色散(waveguide dispersion):指由于波导的几何结构与折射率分布使导模的有效折射率随波长变化,从而导致不同波长的光在波导中具有不同的群速度,引起脉冲展宽的一种色散机制。常见于光纤与集成光波导中,与材料色散等并列为主要色散来源之一。

发音 Pronunciation (IPA)

/wevad dspn/

例句 Examples

Waveguide dispersion can broaden short laser pulses in a fiber.
波导色散会使光纤中的短激光脉冲变宽。

In single-mode fibers, the total dispersion is often engineered by balancing material dispersion with waveguide dispersion to achieve near-zero group-velocity dispersion at a target wavelength.
在单模光纤中,常通过平衡材料色散与波导色散来进行色散工程设计,使目标波长处的群速度色散接近零。

词源 Etymology

waveguidewave(波)+ guide(引导)构成,表示“引导波传播的结构”。disperion 源自拉丁语 dispergere(分散、散开),在物理语境中指“不同频率/波长以不同速度传播而产生的展宽”。合起来即“由波导本身导致的(速度随波长变化的)分散效应”。

相关词 Related Words

文献与作品 Literary Works

  • Optical Waveguide Theory A. W. Snyder & J. D. Love
  • Nonlinear Fiber Optics Govind P. Agrawal
  • Optical Fiber Communications Gerd Keiser
  • Fundamentals of Photonics Bahaa E. A. Saleh & Malvin C. Teich
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