Overview of light splitting used in active optical fiber sensor 分光技術(shù)用于有源光纖傳感器概述
The node with the light splitting or wavelength conversion capability is called a key node . sometimes , only part of the switching nodes can be set as key nodes 由于成本等問(wèn)題,往往不可能在整個(gè)網(wǎng)絡(luò)的所有節(jié)點(diǎn)上都配置分光器件和波長(zhǎng)變換器件;那么在哪些節(jié)點(diǎn)提供分光和波長(zhǎng)變換功能就是一個(gè)重要問(wèn)題。
A new kind of fiber structure with random typed light splitting end is put forward , which is called fi typed fiber bundle and can achieve the intensity compensation . the comparison between the two compensation approaches is finished by experiments 提出了一種帶隨機(jī)型分光端的“ ”型光纖束分光補(bǔ)償結(jié)構(gòu),并與分光鏡分光補(bǔ)償?shù)膹?qiáng)度補(bǔ)償效果進(jìn)行了實(shí)驗(yàn)比較。
The formula to calculate the light splitting ratio of intensity compensation with light splitter is derived out . two kinds of circumstances are discussed in detail , the one is laser polarization changing while the intensity keeping stable , and the other is the intensity changing with the polarization 用能量流分析法推導(dǎo)了用分光鏡分光進(jìn)行強(qiáng)度補(bǔ)償?shù)姆止獗扔?jì)算公式,詳細(xì)討論了入射光的強(qiáng)度不變而偏振方向變化以及二者同時(shí)變化對(duì)分光比的影響。