Abstract

Substrate wave propagation and Bragg diffraction by multiplexed holographic gratings have been used to demonstrate a new 1-to-30 fanout optical interconnect having an overall diffraction efficiency of 87.8% at 514.5 nm and an individual channel efficiency of ~3.0 ± 0.8%. The device configuration utilizes the large multiplexing capability of dichromated gelatin polymer films and substrate total internal reflection to realize large channel fanouts within the plane of a soda-lime glass substrate. A simplified theoretical formulation is presented to treat the corresponding three-dimensional holographic diffraction problem in the Bragg regime for slanted phase gratings. Results are compared with experimentally measured quantities for singly exposed phase gratings in different polarization conditions and incident angle orientations. The limitations of using multiplexed holograms in multiplanar substrate interconnection applications are also discussed.

© 1992 Optical Society of America

Substrate-mode holograms used in optical interconnects: design issues

Jang-Hun Yeh and Raymond K. Kostuk
Appl. Opt. 34(17) 3152-3164 (1995)

Large interconnects in photorefractives: grating erasure problem and a proposed solution

Kasra Rastani and William M. Hubbard
Appl. Opt. 31(5) 598-605 (1992)

Optical multiplanar VLSI interconnects based on multiplexed waveguide holograms

Freddie Lin, Eva M. Strzelecki, and Tomasz Jannson
Appl. Opt. 29(8) 1126-1133 (1990)

Alignment and fabrication tolerances of planar gratings for board-to-board optical interconnects

Kasra Rastani and William M. Hubbard
Appl. Opt. 31(23) 4863-4870 (1992)

Multiplexed substrate-mode holograms

Masayuki Kato, Yang-Tung Huang, and Raymond K. Kostuk
J. Opt. Soc. Am. A 7(8) 1441-1447 (1990)