Skip to main content

Advertisement

Characterization of a Reconfigurable Free-Space Optical Channel for Embedded Computer Applications with Experimental Validation Using Rapid Prototyping Technology

Article metrics

  • 1130 Accesses

Abstract

Free-space optical interconnects (FSOIs) are widely seen as a potential solution to current and future bandwidth bottlenecks for parallel processors. In this paper, an FSOI system called optical highway (OH) is proposed. The OH uses polarizing beam splitter-liquid crystal plate (PBS/LC) assemblies to perform reconfigurable beam combination functions. The properties of the OH make it suitable for embedding complex network topologies such as completed connected mesh or hypercube. This paper proposes the use of rapid prototyping technology for implementing an optomechanical system suitable for studying the reconfigurable characteristics of a free-space optical channel. Additionally, it reports how the limited contrast ratio of the optical components can affect the attenuation of the optical signal and the crosstalk caused by misdirected signals. Different techniques are also proposed in order to increase the optical modulation amplitude (OMA) of the system.

[1 2 3 4 5 6 7 8 9 10 11 12]

References

  1. 1.

    Intel UC Santa Barbara Develop World's First Hybrid Silicon Laser

  2. 2.

    Dines JAB, Snowdon JF, Desmulliez MPY, Barsky DB, Shafarenko AV, Jesshope CR: Optical interconnectivity in a scalable data-parallel system. Journal of Parallel and Distributed Computing 1997,41(1):120-130. 10.1006/jpdc.1996.1290

  3. 3.

    Szymanski TH, Hinton HS: Reconfigurable intelligent optical backplane for parallel computing and communications. Applied Optics 1996,35(8):1253-1268. 10.1364/AO.35.001253

  4. 4.

    Gil Otero R, Moir CJ, Lim T, Russell GA, Snowdon JF: Free-space optical interconnected topologies for parallel computer application and experimental implementation using rapid prototyping techniques. Optical Engineering 2006,45(8):6 pages. 10.1117/1.2338593

  5. 5.

    Kirk AG, Plant DV, Szymanski TH, et al.: Design and implementation of a modulator-based free-space optical backplane for multiprocessor applications. Applied Optics 2003,42(14):2465-2481. 10.1364/AO.42.002465

  6. 6.

    Layet B, Snowdon JF: Comparison of two approaches for implementing free-space optical interconnection networks. Optics Communications 2001,189(1–3):39-46. 10.1016/S0030-4018(01)01000-8

  7. 7.

    Russell GA, Snowdon JF, Lim T, Casswell J, Dew P, Gourlay I: The analysis of multiple buses in a highly connected optical interconnect. Technical Digest of Quantum Electronics and Photonics 15, September 2001, Glasgow, UK 75.

  8. 8.

    Russell GA: Analysis and modelling of optically interconnected computing system, chapter 2, Philosophy Doctorate Thesis.

  9. 9.

    http://www.excel-display.com/lightvalve.shtml

  10. 10.

    Private Line Report on Projection Display; Vol.7, April 2001. Report http://www.profluxpolarizer.com

  11. 11.

    Agrawal GP: Fiber-Optic Communication Systems. John Wiley & Sons, New York, NY, USA; 1992.

  12. 12.

    MAXIM High-Frequency/Fiber Communications Group. Application Note: HFAN-02.2.2. Optical Modulation Amplitude and Extinction Ratio

Download references

Author information

Correspondence to Rafael Gil-Otero.

Rights and permissions

Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Reprints and Permissions

About this article

Keywords

  • Contrast Ratio
  • Parallel Processor
  • Crystal Plate
  • Optical Channel
  • Combination Function