Multichip shared memory module with optical interconnection for parallel-processor system

Hirofumi Kuribara, Hiroyuki Hashimoto, Takafumi Fukushima, Mitsumasa Koyanagi

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


A new multichip shared memory module with optical interconnection for a parallel-processor system was introduced. The new shared memory module mainly consists of shared memory units optically connected to one another through polyimide waveguides and electrically connected to processor elements. We designed and fabricated a static random access memory (SRAM) test chip which has an optical/electrical (O/E) receiver circuit and electrical/optical (E/O) transmitter circuit for optical data transfer. A vertical-cavity surface-emitting laser diode (VCSEL) was integrated onto an LSI chip by the beam-lead bonding technique. Optical data transfer was achieved using polyimide optical waveguides with Al micromirrors formed on a Si substrate called an optical plate, and the optical writing and electrical reading operation in the SRAM test chip was successfully demonstrated.

Original languageEnglish
Pages (from-to)3504-3509
Number of pages6
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number4 B
Publication statusPublished - 2006 Apr 25


  • Multichip module (MCM)
  • Optical interconnection
  • Polyimide optical waveguide
  • Shared memory
  • Vertical-cavity surface-emitting laser diode (VCSEL)

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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