Polarization dependent loss(PDL) of fused taper wide band coupler(FWBC) have been studied and found that it is asymmetry of the two taper fibers making up the coupler that has caused the PDL. By optimizing structure of coupler
the lowest PDL of FWBC ever reported has been achieved: PDL≤ 0.05 dB @1 310 nm & PDL≤ 0.07 dB @1 550 nm.
关键词
熔锥型宽带耦合器偏振相关损耗预拉
Keywords
fused taper wide band couplerpolarization dependent losspre-pull