title: Modeling and design of planar slanted volume holographic gratings for wavelength-division-multiplexing applications.
abstract: Holographic gratings are modeled and designed for path-reversed substrate-guided-wave wavelength-division demultiplexing (WDDM) as a continuation of earlier research [Appl. Opt. 38, 3046 (1999)]. An efficient and practical method is developed to simulate the slanted volume holographic gratings. The trade-off between dispersion and the bandwidth of the holograms is analyzed. A 60 degrees (incident angle of the grating)/60 degrees (diffraction angle of the grating in air) grating structure is selected to demultiplex optical signals in the 1555-nm spectral region, and a 45 degrees /45 degrees grating structure is chosen for the spectral region near 800 nm. Experimental results are consistent with the simulation results for these two WDDM devices. A four-channel WDDM is also demonstrated at a center wavelength of 1555 nm and with a channel spacing of 2 nm.
authors.affiliation: Microelectronics Research Center, Department of Electrical and Computer Engineering, University of Texas at Austin, Texas 78758, USA.
authors.forename: J
authors.initials: J
authors.lastname: Liu
authors.forename: R T
authors.initials: RT
authors.lastname: Chen
authors.forename: B M
authors.initials: BM
authors.lastname: Davies
authors.forename: L
authors.initials: L
authors.lastname: Li