CAJ | 학술논문

　　采用改进的全矢量有效折射率法和耦合模理论，研究了光子晶体光纤布拉格光栅长度、占空比、光栅周期与慢光的变化规律。结果表明当光栅长度和光栅周期不变时，随着包层空气孔占空比的增大，光栅的慢光峰值波长出现蓝移，且时延量逐渐减小；1.06 cm长的光子晶体光纤布拉格光栅可以产生约52 ps的线性时延；光栅长度越大，慢光时延量越大；优化结构参数，在光子晶体光纤布拉格光栅的时延谱的侧瓣附近会产生最大群速度为c/371的慢光峰。
　　채용개진적전시량유효절사솔법화우합모이론，연구료광자정체광섬포랍격광책장도、점공비、광책주기여만광적변화규률。결과표명당광책장도화광책주기불변시，수착포층공기공점공비적증대，광책적만광봉치파장출현람이，차시연량축점감소；1.06 cm장적광자정체광섬포랍격광책가이산생약52 ps적선성시연；광책장도월대，만광시연량월대；우화결구삼수，재광자정체광섬포랍격광책적시연보적측판부근회산생최대군속도위c/371적만광봉。
The influence of grating length, air filling factor and grating period of photonic crystal fiber Bragg grating (PCFBG) on slow light was investigated by improved full vector Effective Index Method (IEIM) and the Coupled-mode theory. The results indicate that the slow light peak wavelength of PCFBG shows a blue shift as the filling factor increases, and the slow light of PCFBG decreases gradually while keeping the grating length and grating period as constants; 1.06 centimeter-long PCFBG can produce linear delay of about 52 ps; slow light of PCFBG increases with the grating length increase;the maximum group velocity of c/371 exists in the vicinity of the side-lobes under optimizing the structure parameters.