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Related Concept Videos

Bus Impedance Matrix01:24

Bus Impedance Matrix

Calculating subtransient fault currents for three-phase faults in an N-bus power system involves using the positive-sequence network. When a three-phase short circuit occurs at a specific bus, the analysis uses the superposition method to evaluate two separate circuits.
In the first circuit, all machine voltage sources are short-circuited, leaving only the prefault voltage source at the fault location. The positive-sequence bus impedance matrix can be determined by solving the nodal equations,...

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High Throughput Microfluidic Rapid and Low Cost Prototyping Packaging Methods
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Regenerative polymeric bus architecture for board-level optical interconnects.

N Bamiedakis1, A Hashim, R V Penty

  • 1Electrical Engineering Division, Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, UK. nb301@cam.ac.uk

Optics Express
|June 21, 2012
PubMed
Summary

This study introduces a novel scalable optical regenerative bus architecture using polymer waveguides for high-speed electrical card interconnection. It demonstrates 10 Gb/s data communication with low error rates, enabling flexible bus extension.

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Area of Science:

  • Photonics and Optical Engineering
  • Materials Science
  • Computer Interconnects

Background:

  • High-speed data communication is crucial for modern computing systems.
  • Existing interconnects face limitations in scalability and speed.
  • Optical interconnects offer potential for higher bandwidth and lower power consumption.

Purpose of the Study:

  • To present a novel scalable multi-channel optical regenerative bus architecture.
  • To demonstrate its feasibility for high-speed interconnection of electrical cards.
  • To achieve reliable data transmission at 10 Gb/s.

Main Methods:

  • Design and fabrication of a 4-channel, 3-card polymeric bus module on FR4 substrates.
  • Utilizing polymer waveguides for optical signal transmission.
  • Implementing a prototype 3R regenerator for signal restoration.

Main Results:

  • Achieved low insertion losses (≤ -15 dB) and crosstalk (< -30 dB).
  • Demonstrated alignment tolerances better than ± 6 µm -1 dB.
  • Successfully transmitted data at 10 Gb/s with a bit-error-rate (BER) < 10(-12).

Conclusions:

  • The proposed optical regenerative bus architecture is scalable and effective.
  • Polymer waveguides enable high-performance optical interconnects.
  • This technology supports future high-speed data communication needs.