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Applied Optics

Applied Optics


  • Vol. 39, Iss. 5 — Feb. 10, 2000
  • pp: 721–732

Field-programmable logic devices with optical input–output

Ted H. Szymanski, Martin Saint-Laurent, Victor Tyan, Albert Au, and Boonchuay Supmonchai  »View Author Affiliations

Applied Optics, Vol. 39, Issue 5, pp. 721-732 (2000)

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A field-programmable logic device (FPLD) with optical I/O is described. FPLD’s with optical I/O can have their functionality specified in the field by means of downloading a control-bit stream and can be used in a wide range of applications, such as optical signal processing, optical image processing, and optical interconnects. Our device implements six state-of-the-art dynamically programmable logic arrays (PLA’s) on a 2 mm × 2 mm die. The devices were fabricated through the Lucent Technologies–Advanced Research Projects Agency–Consortium for Optical and Optoelectronic Technologies in Computing (Lucent/ARPA/COOP) workshop by use of 0.5-µm complementary metal-oxide semiconductor–self-electro-optic device technology and were delivered in 1998. All devices are fully functional: The electronic data paths have been verified at 200 MHz, and optical tests are pending. The device has been programmed to implement a two-stage optical switching network with six 4 × 4 crossbar switches, which can realize more than 190 × 106 unique programmable input–output permutations. The same device scaled to a 2 cm × 2 cm substrate could support as many as 4000 optical I/O and 1 Tbit/s of optical I/O bandwidth and offer fully programmable digital functionality with approximately 110,000 programmable logic gates. The proposed optoelectronic FPLD is also ideally suited to realizing dense, statically reconfigurable crossbar switches. We describe an attractive application area for such devices: a rearrangeable three-stage optical switch for a wide-area-network backbone, switching 1000 traffic streams at the OC-48 data rate and supporting several terabits of traffic.

© 2000 Optical Society of America

OCIS Codes
(130.0250) Integrated optics : Optoelectronics
(200.3760) Optics in computing : Logic-based optical processing
(200.4650) Optics in computing : Optical interconnects
(250.3140) Optoelectronics : Integrated optoelectronic circuits

Original Manuscript: May 17, 1999
Revised Manuscript: August 26, 1999
Published: February 10, 2000

Ted H. Szymanski, Martin Saint-Laurent, Victor Tyan, Albert Au, and Boonchuay Supmonchai, "Field-programmable logic devices with optical input–output," Appl. Opt. 39, 721-732 (2000)

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