We present theoretical and experimental results of a novel fiber-optic wavelength-division multiplexing (WDM) design employing a broadband (>150-nm) dichromated gelatin volume holographic grating operating in a reflective Littrow configuration with on-axis optics, a single lens, and one fiber array. This configuration can achieve better than −1.5-dB insertion loss and −40-dB cross talk for a 6-channel system and −2.5-dB insertion loss and −20-dB cross talk for a 12-channel system with 15-nm channel spacing. For an experimental 4-channel WDM unit we measured better than −1.5-dB insertion loss for all channels and less than −32-dB cross talk. This design can provide cost and performance benefits for local area network communication applications.
© 1989 Optical Society of America
Original Manuscript: April 27, 1989
Manuscript Accepted: July 7, 1989
Published: October 1, 1989
Behzad Moslehi, Phil Harvey, Joel Ng, and Tomasz Jannson, "Fiber-optic wavelength-division multiplexing and demultiplexing using volume holographic gratings," Opt. Lett. 14, 1088-1090 (1989)