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Power-efficient dual-rate optical transceiver.

Yongrong Zuo1, Fouad E Kiamiley, Xiaoqing Wang

  • 1Department of Electrical and Computer Engineering, University of Delaware, 114 Evans Hall, Newark, Delaware 19716, USA. zuo@ece.udel.edu

Applied Optics
|December 2, 2005
PubMed
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This study introduces a dual-rate optical transceiver that dynamically adjusts between 2 Gbit/s and 100 Mbit/s. This power-efficient design enhances system reliability and extends the lifespan of optoelectronic devices.

Area of Science:

  • Optoelectronics
  • Integrated Circuit Design
  • High-Speed Communication

Background:

  • Modern digital systems require increasingly power-efficient interconnects.
  • Dynamic power management is crucial for reducing energy consumption and heat generation in optoelectronic devices.
  • Vertical-cavity surface-emitting lasers (VCSELs) are key components in optical communication systems, benefiting from improved reliability.

Purpose of the Study:

  • To develop a dual-rate optical transceiver capable of operating at 2 Gbit/s and 100 Mbit/s.
  • To implement dynamic power management for energy savings and enhanced device longevity.
  • To demonstrate the feasibility of a power-efficient, adaptable optical communication solution.

Main Methods:

  • Fabrication of a dual-rate transceiver using 0.5 microm silicon-on-sapphire complementary metal-oxide semiconductor technology.

Related Experiment Videos

  • Integration of separate high-speed (gigabit) and low-power (megabit) data path modules within the transmitter and receiver circuits.
  • Attachment of VCSELs and photodetectors via flip-chip bonding to the integrated circuit.

    • Main Results:

    • Successful demonstration of reliable optical link operation at both 2 Gbit/s and 100 Mbit/s data rates.
    • Achieved low power consumption: approximately 104 mW at 2 Gbit/s and approximately 9 mW at 100 Mbit/s.
    • Demonstrated a switching time of 10 microseconds between data rates, limited by register reconfiguration.

    Conclusions:

    • The developed dual-rate transceiver effectively supports variable data rates with significant power savings.
    • Dynamic power management enhances the reliability and operational lifetime of optoelectronic components.
    • Future improvements in switching speed are achievable through dedicated control signal routing.