| 摘要 |
The present invention provides a wavelength interleaver comprising a first interleaving unit, a second interleaving unit and an adapting waveguide coupled between the first interleaving unit and the second interleaving unit; both the first interleaving unit and the second interleaving unit including an input waveguide, an output waveguide and a filter coupled between the input waveguide and the output waveguide, the input waveguide of the first interleaving unit receiving an optical input signal with a particular wavelength for coupling to the filter of the first interleaving unit and outputting a first interleaving signal from the output waveguide of the first interleaving unit; the input waveguide of the second interleaving unit receiving the optical input signal through the adapting waveguide for coupling to the filter of the second interleaving unit and outputting a second interleaving signal from the output waveguide of the second interleaving unit. The gap width between the input waveguide and the filter of the first interleaving unit is a first gap width and the gap width between the filter and the output waveguide of the first interleaving unit is a second gap width, wherein one of the first gap width and the second gap width is greater than a jumping threshold gap width, and the other one of the first gap width and the second gap width is less than the jumping threshold gap width. The gap width between the input waveguide and the filter of the second interleaving unit is a third gap width and the gap width between the filter and the output waveguide of the second interleaving unit is a forth gap width, wherein both the third and forth gap widths are greater or less than the jumping threshold gap width.
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