InP薄膜内包层光纤放大性的理论计算  

Theoretical calculation of optical amplification characteristic of inner cladding fiber with InP thin-film

作　　者：王瑾[1] 张茹[1] 关黎明[1] 

机构地区：[1]北京邮电大学理学院光通信与光波技术教育部重点实验室,北京100876

出　　处：《功能材料》2007年第A01期361-363,共3页Journal of Functional Materials

基　　金：基金项目：国家自然科学基金资助项目（60477032;60544002）;上海市重点学科建设开放项目（T0102）

摘　　要：将纳米技术和光纤技术相结合，对研制出的纳米级InP薄膜内包层光纤进行光放大性能的测试，测试结果表明该光纤在很短的长度上具有比较好的放大性能，单位长度放大系数在906-1044nm的波段上为1．40-5．12dB／m，在1080-1491nm的波段上为1．40-15．35dB／m，在1524-1596nm的波段上为1．86-7．44dB／m。根据氢原子模型计算了InP微粒产生量子尺寸效应的相对粒径αB=8．313nm，以及纳米级InP微粒的粒径与能级改变的关系得到，当厚度d=16nm，△E=0.071eV,满足当d≤2aB时的强限域，量子尺寸效应明显，光纤具有光放大性,计算结果与实验测试结果相符。Optical amplified characteristic of inner cladding fiber with InP thin-film is tested. The results indicate that this fiber has better optical amplification characteristic in short length. Amplification coefficients of per-length are 1.40-5.12 dB/m from 906 to1044 nm wave band, 1.40-15.35 dB/m from 1080 to 1491 nm wave band, and 1.86-7.44 dB/m from 1524 to 1596nm wave band. Based on hydrogen atomic model, we theoretically calculate the comparative size of the nano-scale InP mote aB = 8.313nm which has the quantum size effect. Through calculating the relationship between the nano-scale InP mote＇s radius and the change of energy band, when the thickness of film d= 16nm, the comparative size as, we gain the △E=0.071eV. Satisfying the d≤2aB condition, the quantum size effect is evident and the fiber has the optical amplified characteristic. The calculated results are matching well with the test.

关 键 词：掺杂光纤 量子尺寸效应 光放大 

分 类 号：TN253[电子电信—物理电子学]