High-density non-diffracting beam array for optical interconnection

Changyuan Yu, Michael R. Wang, Alberto J. Varela, Bing Chen

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

High-density parallel optical beam arrays are useful for free space optical interconnects. To achieve high-density interconnection the optical beam sizes must be small while the propagation divergence within the specified interconnect range must also be small. This contradictory requirement in free space for a conventional Gaussian beam is however possible to be satisfied with a pseudo-non-diffracting beam. We present herein high-density pseudo-non-diffracting beam arrays achieved by using holographic technique. The demonstrated pseudo-non-diffracting beams can keep their central spot size of about 95 μm within the propagation distance of 40 cm. The center-to-center beam separation is 250 μm, which is much smaller than those achieved by collimated Gaussian beams with the same interconnect range. The small central lobe sizes can further avoid the use of collection/focusing lenses at the high-speed photodetector receivers.

Original languageEnglish (US)
Pages (from-to)369-376
Number of pages8
JournalOptics Communications
Volume177
Issue number1
DOIs
StatePublished - Apr 15 2000

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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