Long period fiber grating (LPFG) is a new kind of optical fiber element.
长周期光纤光栅是一种新型光纤器件。
The emery paper is applicable in the grinding and polishing of most work pieces including metal, metal alloy, ceramic, optical element, fiber connecter, hard disc and semiconductor, etc.
该研磨纸可 用于众多工件的研磨和抛光，包括金属、金属合金、陶瓷、光学元件、光纤连接器、硬盘、 半导体等领域。
The relation between optical fiber structural parameters and transmission properties is simulated with finite element method.
用有限元法模拟了光纤结构参数与传输性能间的关系。
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