title: Waveguide holographic elements recorded by guided modes.
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.
authors.forename: L
authors.initials: L
authors.lastname: Singher
authors.forename: J
authors.initials: J
authors.lastname: Shamir