红外与激光工程
紅外與激光工程
홍외여격광공정
INFRARED AND LASER ENGINEERING
2014年
2期
511-516
,共6页
刘永兴%张培晴%戴世勋%王训四%林常规%张巍%聂秋华%徐铁峰
劉永興%張培晴%戴世勛%王訓四%林常規%張巍%聶鞦華%徐鐵峰
류영흥%장배청%대세훈%왕훈사%림상규%장외%섭추화%서철봉
光子晶体光纤%中红外%非线性%参量放大
光子晶體光纖%中紅外%非線性%參量放大
광자정체광섬%중홍외%비선성%삼량방대
photonic crystal fiber%middle infrared%nonlinear%parametric amplifier
硫系玻璃具有良好的红外透过性能(可达25μm),极低的声子能量(<350 cm-1),较大的玻璃形成区和极高的非线性折射率n2(为石英材料的100~1000倍)。硫系玻璃光子晶体光纤因其优良的非线性特性在红外波段具有众多的潜在应用价值。设计一种高非线性特性的无As环保型的Ge20Sb15Se65硫系玻璃光子晶体光纤,利用平面波展开法对结构参数进行优化,获得了具有高非线性和宽带色散平坦的光纤结构参数,研究了其光学参量放大过程。数值模拟发现,通过调整光纤的色散零点,利用3.4μm激光泵浦,可对3.3~3.5μm波段信号光实现有效放大。
硫繫玻璃具有良好的紅外透過性能(可達25μm),極低的聲子能量(<350 cm-1),較大的玻璃形成區和極高的非線性摺射率n2(為石英材料的100~1000倍)。硫繫玻璃光子晶體光纖因其優良的非線性特性在紅外波段具有衆多的潛在應用價值。設計一種高非線性特性的無As環保型的Ge20Sb15Se65硫繫玻璃光子晶體光纖,利用平麵波展開法對結構參數進行優化,穫得瞭具有高非線性和寬帶色散平坦的光纖結構參數,研究瞭其光學參量放大過程。數值模擬髮現,通過調整光纖的色散零點,利用3.4μm激光泵浦,可對3.3~3.5μm波段信號光實現有效放大。
류계파리구유량호적홍외투과성능(가체25μm),겁저적성자능량(<350 cm-1),교대적파리형성구화겁고적비선성절사솔n2(위석영재료적100~1000배)。류계파리광자정체광섬인기우량적비선성특성재홍외파단구유음다적잠재응용개치。설계일충고비선성특성적무As배보형적Ge20Sb15Se65류계파리광자정체광섬,이용평면파전개법대결구삼수진행우화,획득료구유고비선성화관대색산평탄적광섬결구삼수,연구료기광학삼량방대과정。수치모의발현,통과조정광섬적색산영점,이용3.4μm격광빙포,가대3.3~3.5μm파단신호광실현유효방대。
Chalcogenide glasses were possessed of some unique advantages, such as large infrared transmission window(up to 25μm), low phonon energy(lower than 350 cm-1), large glass forming region and highly nonlinear refractive coefficient n2 (about 100-1 000 times than silica). With excellent optical nonlinear,calcogenide glass photonic crystal fiber had a large number of potential applications in the infrared filed. A highly nonlinear photonic crystal fiber based on Ge20Sb15Se65 chalcogenide glass was designed. Using plane-wave method (PWM), numerical analysis of its nonlinear and dispersion characteristics with different structure parameters were carried out. By optimization structural parameters, a highly nonlinear and broadband dispersion-flattened fiber was obtained. With a 3.4μm laser pumping, signal light could be effectively amplified in 3.3-3.5μm.