CAJ | 학술논문

光子晶体光纤由于其灵活可调的色散特性用作色散补偿具有极大的应用潜力.设计了一种色散补偿光子晶体光纤,并运用频域有限差分法模拟了其色散特性,从理论上分析了其结构参数孔间距Λ和空气占空比d/Λ对该光子晶体光纤的色散系数的影响,并且实际制备出了3种不同结构参数的光子晶体光纤.通过对其色散曲线对比分析表明:当光子晶体光纤孔间距在1μm附近时,其色散系数随着孔间距Λ和占空比d/Λ的增大而增加,但对于孔间距Λ的变化比占空比d/Λ更为敏感,并且随着孔间距Λ的增加,其对色散系数的影响能力逐渐减小.设计并制备的光子晶体光纤在1550 nm处的色散系数为?241.5 ps·nm?1·km?1,相对色散斜率为0.0018,具有较好的色散补偿能力.
광자정체광섬유우기령활가조적색산특성용작색산보상구유겁대적응용잠력.설계료일충색산보상광자정체광섬,병운용빈역유한차분법모의료기색산특성,종이론상분석료기결구삼수공간거Λ화공기점공비d/Λ대해광자정체광섬적색산계수적영향,병차실제제비출료3충불동결구삼수적광자정체광섬.통과대기색산곡선대비분석표명:당광자정체광섬공간거재1μm부근시,기색산계수수착공간거Λ화점공비d/Λ적증대이증가,단대우공간거Λ적변화비점공비d/Λ경위민감,병차수착공간거Λ적증가,기대색산계수적영향능력축점감소.설계병제비적광자정체광섬재1550 nm처적색산계수위?241.5 ps·nm?1·km?1,상대색산사솔위0.0018,구유교호적색산보상능력.
Photonic crystal fiber has great potential applications such as dispersion compensation due to its adjustable and flexible dispersion characteristics. In this paper, we design a dispersion compensation photonic crystal fiber, simulate the dispersion characteristics by the finite-difference frequency-domain method, and analyse the effects of the structure parameters air hole spacingΛ and air-filling fraction d/Λ on the dispersion of photonic crystal fiber theoretically. And we also fabricate three photonic crystal fibers with different structural parameters. Through the comparison and analysis of their dispersion curves, we have the following conclusions:the dispersion coefficient increases with air hole spacingΛ and air-filling fraction d/Λ increasing when the air hole spacing of photonic crystal fiber is about 1 μm, but the dispersion is more sensitive to the change of air hole spacingΛ than to air-filling fraction d/Λ, and the effect of air hole spacing on the dispersion coefficient decreases with the increase of air hole spacing. One of the photonic crystal fibers realizes the designed structure:its dispersion coefficient is 241.5 ps·nm?1·km?1, relative dispersion slope is 0.0018 at 1550 nm, it has good ability in dispersion compensation.