| dc.description.abstract | In recent years, the optical interconnect is an important issue for communication technology. How to improve the speed of information transfer has become an inevitable topic. Because of the limited by material properties, traditional of the coaxial cable and copper wire systems are inadequate. High-speed transmission using light as a medium of the optical interconnector has become the subject of competing research.
In this paper, a non-coplanar bending waveguide with 45 degree reflector is proposed on SOI-based. This technique can be applied to the optical interconnector of inter- or intra-chip. In the framework, the active electrical components and passive photonic components are opposite side. The 45 degree micro-reflector with a smooth slant quality, and high-speed signaling link between active electrical components layer and passive photonic components layer are achieved by using infrared wavelength of 1550 nm light source. Non-coplanar bending waveguide
include a Si-based 45 degree micro-reflector and a trapezoidal ridge waveguide which height is about 40 μm.
In this work, the optical simulation, fabrication and measurement of non-coplanar bending waveguide with 45 degree reflector and trapezoidal ridge waveguide were achieved. The polishing techniques for end facet of
trapezoidal ridge waveguide were also developed. After polishing the waveguide, the insertion loss can be enhanced 49% than unpolished waveguide. The insertion loss of trapezoidal ridge waveguide was -4.32 dB, and its propagation loss was -0.404 dB/cm. At output multi-mode fiber, the 1-dB degradation tolerance was about 35 μm. In the non-coplanar bending waveguide with 45 degree reflector, the insertion loss can be enhanced 25% after polishing the waveguide facet. The insertion loss of non-coplanar bending waveguide was -4.51dB, and the 1-dB degradation tolerance of input single-mode fiber was about 23 μm. At output multi-mode fiber, the 1-dB degradation tolerance is about 42 μm, and the cross-talk of nearby waveguide was about -50 dB.
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