Abstract

A new, to our knowledge, space-variant optical interconnection system based on a spatial-phase code-division multiple-access technique with multiplexed Fourier holography is described. In this technique a signal beam is spread over wide spatial frequencies by an M-sequence pseudorandom phase code. At a receiver side a selected signal beam is properly decoded, and at the same time its spatial pattern is shaped with a Fourier hologram, which is recorded by light that is encoded with the same M-sequence phase mask as the desired signal beam and by light whose spatial beam pattern is shaped to a signal routing pattern. Using the multiplexed holography, we can simultaneously route multisignal flows into individually specified receiver elements. The routing pattern can also be varied by means of switching the encoding phase code or replacing the hologram. We demonstrated a proof-of-principle experiment with a doubly multiplexed hologram that enables simultaneous routing of two signal beams. Using a numerical model, we showed that the proposed scheme can manage more than 250 routing patterns for one signal flow with one multiplexed hologram at a signal-to-noise ratio of ∼5.

© 2000 Optical Society of America

Filter multiplexing by use of spatial code division multiple access approach

Jonathan Solomon, Zeev Zalevsky, David Mendlovic, and Javier Garcia Monreal
Appl. Opt. 42(5) 772-777 (2003)

System performances of optical space code-division multiple-access-based fiber-optic two-dimensional parallel data link

Moriya Nakamura and Ken-ichi Kitayama
Appl. Opt. 37(14) 2915-2924 (1998)

Performance analysis of phase-code multiplexed holographic memory

Kyu-Tae Kim, Byung-Chul Cho, Eun-Soo Kim, and Sang-Keun Gil
Appl. Opt. 39(23) 4160-4167 (2000)

Design of efficient all-optical code-division multiplexing systems supporting multiple-bit-rate and equal-bit-rate transmissions

Jian-Guo Zhang, Giorgio Picchi, and A. B. Sharma
Appl. Opt. 39(14) 2264-2277 (2000)

Node-based reconfigurable volume interconnection. 1. Principles and optical design

B. Fracasso and J.-L. de Bougrenet de la Tocnaye
Appl. Opt. 33(23) 5348-5362 (1994)