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- W1550050054 abstract "As silicon photonics enters mainstream technology, we find ourselves in need of methods to seamlessly transfer light between the optical fibers of global scale telecommunications networks and the on-chip waveguides used for signal routing and processing in local computing networks. Connecting these components directly results in high loss from their unequal sizes. Therefore, we employ a coupler, which acts as an intermediary device to reduce loss through mode and index matching, and provide alignment tolerance. This thesis presents a potential fiber-to-waveguide coupler design for use in integrating such networks. A quadratic index stack focuses incident light from a fiber in one plane, while a planar lens and linear taper do likewise in the perpendicular plane. Once the mode is sufficiently compressed, the light then enters and propagates through the waveguide. We performed simulations using the beam propagation method and finite difference time domain, among other modeling techniques, to optimize coupling efficiency and gain an understanding of how varying certain parameters affects coupler performance. The simulation results were then incorporated into a mask layout for fabrication and measurement. Thesis Supervisor: Lionel C. Kimerling Title: Thomas Lord Professor of Materials Science and Engineering" @default.
- W1550050054 created "2016-06-24" @default.
- W1550050054 creator A5004029423 @default.
- W1550050054 date "2004-01-01" @default.
- W1550050054 modified "2023-09-26" @default.
- W1550050054 title "Fiber to Waveguide Couplers for Silicon Photonics" @default.
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