| Summary: | 碩士 === 國立交通大學 === 電子研究所 === 81 === Due to the great improvement of switching time on electric
device and the increasing chip size, the transmission
delaysradually becomes the dominate factor that influence the
overall system. Because optics show its excellent
characteristic for transmission, optical waveguides are
proposed to solve the communication problems at high freqency.
Optical fibers areapable of transmit signals through long
distance without much distortion, which is a good media to
replace wire. Si-basedptical waveguides are compatible with Si
IC technology today. Optical signals are sent through fibers
and on-chip waveguides to the designed position on chip. In the
transmission path, the discontinuities between fibers and
waveguides result in serious coupling loss. By means of
numerical simulation methods,PFE(Mode Propagation by Fourier
Expansion), we can establish the simulation system to analyze
the transmission characteristicnd get the optimum structure for
our waveguides. We fabricate waveguides by Si3N4 in NCTU
Semiconductor Reaserch Center. We measure the loss of the
waveguides and theoupling loss between single-mode fiber and
waveguide by cutback method and scattering detection method. We
compare the simulation results with experiment results to
investigate the feasibility of the MPFE method and our optical
interconnect structure.
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