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IEICE TRANSACTIONS on Fundamentals

Methods for Reducing Power and Area of BDD-Based Optical Logic Circuits

Ryosuke MATSUO, Jun SHIOMI, Tohru ISHIHARA, Hidetoshi ONODERA, Akihiko SHINYA, Masaya NOTOMI

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Summary :

Optical circuits using nanophotonic devices attract significant interest due to its ultra-high speed operation. As a consequence, the synthesis methods for the optical circuits also attract increasing attention. However, existing methods for synthesizing optical circuits mostly rely on straight-forward mappings from established data structures such as Binary Decision Diagram (BDD). The strategy of simply mapping a BDD to an optical circuit sometimes results in an explosion of size and involves significant power losses in branches and optical devices. To address these issues, this paper proposes a method for reducing the size of BDD-based optical logic circuits exploiting wavelength division multiplexing (WDM). The paper also proposes a method for reducing the number of branches in a BDD-based circuit, which reduces the power dissipation in laser sources. Experimental results obtained using a partial product accumulation circuit used in a 4-bit parallel multiplier demonstrates significant advantages of our method over existing approaches in terms of area and power consumption.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E102-A No.12 pp.1751-1759
Publication Date
2019/12/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E102.A.1751
Type of Manuscript
Special Section PAPER (Special Section on VLSI Design and CAD Algorithms)
Category

Authors

Ryosuke MATSUO
  Kyoto University
Jun SHIOMI
  Kyoto University
Tohru ISHIHARA
  Kyoto University
Hidetoshi ONODERA
  Kyoto University
Akihiko SHINYA
  NTT Corporation
Masaya NOTOMI
  NTT Corporation

Keyword