Ja. Liu et Rt. Chen, Path-reversed substrate-guided-wave optical interconnects for wavelength-division demultiplexing, APPL OPTICS, 38(14), 1999, pp. 3046-3052
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 i
nto the waveguiding plate and then to be coupled out of the plate by a wave
guide hologram. Theoretical analyses are given for dispersion, bandwidth, a
nd recording parameters of various guided-wave holographic gratings. A devi
ce is fabricated with a 45 degrees incident angle and a 45 degrees diffract
ion angle by use of a 20-mu m photopolymer film. The 3-dB bandwidth of the
device is measured to be 20 nm. Four-channel wavelength demultiplexing is d
emonstrated 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 s polarization is also demonstrated to increase th
e user-sharing capacity. Twenty fan-out channels (5 x 4) are achieved exper
imentally. (C) 1999 Optical Society of America.