Abstract
Recording holographic optical elements in planar waveguides with both interfering beams being guided modes has certain advantages. We show that such holograms can be efficiently recorded when only a small fraction of the guided modes penetrates the recording material that is deposited outside the main guiding region. An integrated optic wavelength-division demultiplexer is analyzed and implemented as a specific example. In this example the holographic grating also acts as a focusing element; thus no additional collimating or focusing lenses are required.
© 1994 Optical Society of America
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