The inherent multifunctionality of holographic optical elements and their light physical weight make them an attractive solution for the receiver optics of portable terminals in indoor infrared wireless communication systems. A parabolic holographic mirror has been recorded in silver halide at a visible wavelength, and its replay wavelength has been shifted to the near infrared. Employment of proprietary swelling technology resulted in a permanent replay wavelength shift without the need for hologram sealing. Despite the relatively low diffraction efficiency of holograms recorded in silver halide in principle, an improvement in the receiver signal-to-noise ratio of more than 20 dB has been measured. The results of the conducted experiments proved undoubtedly the great potential of curved holographic mirrors as a key element of the receiver optical front end in IR wireless communication systems.
© 2002 Optical Society of America
(060.4510) Fiber optics and optical communications : Optical communications
(090.0090) Holography : Holography
(090.2890) Holography : Holographic optical elements
(090.7330) Holography : Volume gratings
Svetla T. Jivkova, Stanislav Shurulinkov, and Mohsen Kavehrad, "Holographic Parabolic Mirror as a Receiver Optical Front End for Wireless Infrared Communications: Experimental Study," Appl. Opt. 41, 5860-5865 (2002)