An ultracompact 3 dB coupler is designed and fabricated in silicon on insulator,based on 1×2 line tapered multimode interference (MMI) coupler.Comparing with the conventional straight MMI coupler,the device is...An ultracompact 3 dB coupler is designed and fabricated in silicon on insulator,based on 1×2 line tapered multimode interference (MMI) coupler.Comparing with the conventional straight MMI coupler,the device is ～40% shorter in length.The device exhibits uniformity of 1 3dB and excess loss of 2 5dB.展开更多
SOI waveguides fabricated by wet-etching method are demonstrated.The single mode waveguide and 1×2 3dB MMI splitter are analyzed and designed by three dimensional beam propagation method to correct the error of e...SOI waveguides fabricated by wet-etching method are demonstrated.The single mode waveguide and 1×2 3dB MMI splitter are analyzed and designed by three dimensional beam propagation method to correct the error of effective index method and guided mode method.The devices are fabricated.Excellent performances,such as low propagation loss of -1.37dB/cm,low excess loss of -2.2dB,and good uniformity of 0.3dB,are achieved.展开更多
文摘An ultracompact 3 dB coupler is designed and fabricated in silicon on insulator,based on 1×2 line tapered multimode interference (MMI) coupler.Comparing with the conventional straight MMI coupler,the device is ～40% shorter in length.The device exhibits uniformity of 1 3dB and excess loss of 2 5dB.
文摘SOI waveguides fabricated by wet-etching method are demonstrated.The single mode waveguide and 1×2 3dB MMI splitter are analyzed and designed by three dimensional beam propagation method to correct the error of effective index method and guided mode method.The devices are fabricated.Excellent performances,such as low propagation loss of -1.37dB/cm,low excess loss of -2.2dB,and good uniformity of 0.3dB,are achieved.
