光子学报
光子學報
광자학보
ACTA PHOTONICA SINICA
2007年
7期
1247-1252
,共6页
徐永钊%任晓敏%张霞%卫艳芬%黄永清
徐永釗%任曉敏%張霞%衛豔芬%黃永清
서영쇠%임효민%장하%위염분%황영청
微结构光纤%非线性光纤环镜%脉冲压缩
微結構光纖%非線性光纖環鏡%脈遲壓縮
미결구광섬%비선성광섬배경%맥충압축
Microstructured fiber%Nonlinear optical loop mirror%Pulse compression
提出了利用一种高非线性微结构光纤构成非线性光纤环镜(NOLM)进行脉冲压缩和基座抑制的方案.所提出的微结构光纤具有高非线性系数和大反常色散.理论研究了基于这种微结构光纤的NOLM对脉冲的压缩效应,并分析了压缩的机制.数值结果表明,这种NOLM采用较短的光纤长度就能有效地压缩脉冲并明显抑制了基座.对于给定的输入脉冲,存在一个最优的环路长度,可以获得高质量的压缩脉冲.通过适当选择耦合比和环路长度,则可以完全消除脉冲的基座.
提齣瞭利用一種高非線性微結構光纖構成非線性光纖環鏡(NOLM)進行脈遲壓縮和基座抑製的方案.所提齣的微結構光纖具有高非線性繫數和大反常色散.理論研究瞭基于這種微結構光纖的NOLM對脈遲的壓縮效應,併分析瞭壓縮的機製.數值結果錶明,這種NOLM採用較短的光纖長度就能有效地壓縮脈遲併明顯抑製瞭基座.對于給定的輸入脈遲,存在一箇最優的環路長度,可以穫得高質量的壓縮脈遲.通過適噹選擇耦閤比和環路長度,則可以完全消除脈遲的基座.
제출료이용일충고비선성미결구광섬구성비선성광섬배경(NOLM)진행맥충압축화기좌억제적방안.소제출적미결구광섬구유고비선성계수화대반상색산.이론연구료기우저충미결구광섬적NOLM대맥충적압축효응,병분석료압축적궤제.수치결과표명,저충NOLM채용교단적광섬장도취능유효지압축맥충병명현억제료기좌.대우급정적수입맥충,존재일개최우적배로장도,가이획득고질량적압축맥충.통과괄당선택우합비화배로장도,칙가이완전소제맥충적기좌.
A highly nonlinear microstructured fiber is proposed to construct nonlinear optical loop mirrors (NOLMs) for pulse compression and pedestal suppression. The proposed fiber has high nonlinear coefficient and large anomalous dispersion. The compressions of pulses by the NOLMs are theoretically investigated and the compression mechanism is also discussed. It is shown fro mnumerical results that the proposed NOLMs compress the pulses efficiently and significantly suppress the pedestals with a short loop length. For a given input pulse, there exists an optimal loop length at which the high quality compressed pulse can be obtained. By appropriately choosing the power-coupling ratio and loop length, the pedestal can be removed entirely.