Multiwave computing circuits using integrated opto-electronic devices

Takafumi Aoki, Yukio Watanabe, Tatsuo Higuchi, Shoji Kawahito, Yoshiaki Tadokoro

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Citations (Scopus)


Multiwave optical computing, where discrete wavelengths are employed as multiplexable information carriers, presents an interesting solution to the communication crisis in next-generation integrated systems. A computer architecture using multiwavelength opto-electronic integrated circuits (multiwave OEICs) provides the wavelength space as extra dimension of freedom for parallel processing. A key feature is that several independent computations can be performed in a single optical circuit using wavelength space, as if it were several computing circuits operating in parallel. The model of basic logic gates for multiwave (four-wave) computing circuits is shown. The functions, union, complement, and wavelength conversion, form a functionally-complete set of logic operations for constructing arbitrary multiwave computing circuitry. An experimental system demonstrating the concept of multiwave computing as well as wavelength-space routing is shown. This architecture will have wide range of applications in parallel processing systems for which interconnection is a major issue. In this level of organization, embedding complicated global communication topology into wavelength space provides significant advantages. In a class of parallel processing architectures based on bit-permute-complement (BPC) connections (e.g., perfect-shuffle network, FFT network, Batcher's sorting network, etc.), two-dimensional reduction of interconnection area by the factor of 1/r2 is expected with r wavelength components.

Original languageEnglish
Title of host publicationDigest of Technical Papers - IEEE International Solid-State Circuits Conference
Editors Anon
PublisherPubl by IEEE
Number of pages2
ISBN (Print)0780318455
Publication statusPublished - 1994
EventProceedings of the 1994 IEEE International Solid-State Circuits Conference - San Francisco, CA, USA
Duration: 1994 Feb 161994 Feb 18

Publication series

NameDigest of Technical Papers - IEEE International Solid-State Circuits Conference


ConferenceProceedings of the 1994 IEEE International Solid-State Circuits Conference
CitySan Francisco, CA, USA


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