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We have evaluated leakage losses of one-dimensional photonic crystal coupled resonator optical waveguides (1-D PC-CROW) by using three-dimensional finite element method (3-D FEM). We propose structure of 1-D PC-CROW with shifted position of air-hole, changed size of air-hole, and changed air-hole depth. We have also proposed air-bridge 1-D PC-CROW and evaluated group velocity and leakage losses of...
Reversed dispersion slope PBG fibers are presented around one micron by the introduction of partial reflector layer around the core resulting in a strongly wavelength dependent nonlinear phase shift on the propagating fundamental mode.
We report a design method of tapering structure for highly-efficient coupling between one-dimensional photonic-crystal coupled-cavity-waveguides and straight waveguides. Numerical results show that high transmission over wide bandwidth can be achieved by using proposed waveguide-tapering technique.
Using an accurate full-vectorial finite element method, a realistic model of a fabricated dispersion compensating photonic crystal fiber is analyzed. An almost flat Raman-gain spectrum (gain-ripples at just plusmn0.48-dB) is obtained using a single pump.
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