Spatial-phase code-division multiple-access system with multiplexed fourier holography switching for reconfigurable optical interconnection

Kazuya Takasago, Makoto Takekawa, Atsushi Shirakawa, Fumihiko Kannari

研究成果: Article査読

2 被引用数 (Scopus)

抄録

A new, to our knowledge, space-variant optical interconnection system based on a spatial-phase codedivision 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 あ5.

本文言語English
ページ(範囲)2278-2286
ページ数9
ジャーナルApplied Optics
39
14
DOI
出版ステータスPublished - 2000 5月 10

ASJC Scopus subject areas

  • 原子分子物理学および光学
  • 工学(その他)
  • 電子工学および電気工学

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