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发明公开
CN105143938A 偏振分束器和光学器件 无效 - 撤回

偏振分束器和光学器件
摘要：
根据本发明的示例性实施例的一种偏振分束器包括：解复用器(11)；复用器(14)；第一臂波导(12)，其至少一部分由脊形波导形成；以及第二臂波导(13)，其至少一部分由通道波导形成。对于彼此正交的线性偏振分量中的一个，所述第一臂波导(12)与所述第二臂波导(13)的折射率相同，并且所述第一臂波导和所述第二臂波导的波导宽度被形成为使得关于所述波导宽度的改变的折射率改变相同。在所述正交偏振分量中的另一个中，在传播通过所述第一臂波导(12)的所述第一输入光和传播通过所述第二臂波导(13)的所述第二输入光之间产生相位差。
摘要（英）：

A polarization beam splitter according to an embodiment of the present invention is provided with: a demultiplexer (11); a multiplexer (14); a first arm waveguide (12) at least one part of which is formed by a rib type waveguide; and a second arm waveguide (13) at least part of which is formed by a channel type waveguide. The indexes of refraction for the first arm waveguide (12) and the second arm waveguide (13) are the same for input light with one of linearly polarized light components that are orthogonal to each other, and the first and second arm waveguides are formed at waveguide widths such that the change in the index of refraction is the same for changes in waveguide width. With the other linearly polarized light component, a phase difference arises between a first input light propagated by the first arm waveguide (12) and a second input light propagated by the second arm waveguide (13).

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