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Compact Waveguide Polarization Beam Splitter using a Multimode Interference Coupler

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Abstract

The polarization beam splitter is often used in composing a polarization-independent wavelength filter employing mode conversion. The length of the polarization beam splitter should be short as possible to allocate sufficient length for the wavelength filter and to render the device integratable on a substrate having a limited area. The most compact device demonstrated thus far uses intersecting waveguides [1], but the fan out waveguides needed to connect the device to the mode converter required a certain length. This report demonstrates a device shorter than 1 mm which requires no fan out waveguides.

© 1995 Optical Society of America

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