CAJ | 학술논문

提出一种功能复用光隔离器设计方案.在传统光隔离器中加入了透镜对,两透镜间拥有一个相邻共焦面,具有空间光交叉功能,能实现功能复用光隔离器输入输出多尾纤之间的对应耦合;二者结合组成空间复用功能系统,使光隔离器具有功能复用的作用.该光隔离器的主要性能测量结果表明,所设计的1550nm双通道功能复用光隔离器两个通道的插入损耗分别为0.43dB和0.31dB,隔离度分别为43dB和40dB,两个功能隔离器之间的串扰都大于60dB,达到了隔离器需要满足的性能指标,在低插损、高隔离的基础上具有功能复用效用.
제출일충공능복용광격리기설계방안.재전통광격리기중가입료투경대,량투경간옹유일개상린공초면,구유공간광교차공능,능실현공능복용광격리기수입수출다미섬지간적대응우합;이자결합조성공간복용공능계통,사광격리기구유공능복용적작용.해광격리기적주요성능측량결과표명,소설계적1550nm쌍통도공능복용광격리기량개통도적삽입손모분별위0.43dB화0.31dB,격리도분별위43dB화40dB,량개공능격리기지간적천우도대우60dB,체도료격리기수요만족적성능지표,재저삽손、고격리적기출상구유공능복용효용.
A new type of optical isolator with double core fiber is proposed. The optical isolator has been fabricated with two fiber tips and a lens pair. The lens pair has a confocal plane in between with same optical axis direction and optical cross function. Integrated with two fiber tips, the function of optical isolator is duplicated in comparison with conventional optical isolator with single fiber tip. This isolator couples optical radiation in one direction from two fibers to the corresponding double output fibers. The innovative isolator with dual core fiber collimator is assembled and tested at 1550nm wavelength. Experimental results show that the forward insertion loss from two channels reaches 0.43dB and 0.31dB, loss from backward isolation reaches 43dB and 40dB respectively. The cross talk of both channels achieves 60dB. It's the most important that the isolator, which features duplicated function and good performances, also has a low cost and a small dimension comparatively.