A path-reversed substrate-guided-wave holographic interconnection scheme is investigated for a wavelength-division demultiplexing application. Using a beveled edge of a waveguiding plate allows optical signals to be coupled into the waveguiding plate and then to be coupled out of the plate by a waveguide hologram. Theoretical analyses are given for dispersion, bandwidth, and recording parameters of various guided-wave holographic gratings. A device is fabricated with a 45° incident angle and a 45° diffraction angle by use of a 20-μm photopolymer film. The 3-dB bandwidth of the device is measured to be 20 nm. Four-channel wavelength demultiplexing is demonstrated at 796, 798, 800, and 802 nm with no cross talk observed. A one-to-five cascaded four-channel wavelength-division demultiplexer with ∓5% energy uniformity under <i>s</i> polarization is also demonstrated to increase the user-sharing capacity. Twenty fan-out channels (5 × 4) are achieved experimentally.
© 1999 Optical Society of America
(050.1970) Diffraction and gratings : Diffractive optics
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(060.4230) Fiber optics and optical communications : Multiplexing
(060.4250) Fiber optics and optical communications : Networks
(090.0090) Holography : Holography
Jian Liu and Ray T. Chen, "Path-Reversed Substrate- Guided-Wave Optical Interconnects for Wavelength-Division Demultiplexing," Appl. Opt. 38, 3046-3052 (1999)