Related Experiment Video
Updated: Jul 15, 2026
07:45
Quasi-light Storage for Optical Data Packets
Published on: February 6, 2014
Design and implementation of a modulator-based free-space optical backplane for multiprocessor applications
Andrew G Kirk1, David V Plant, Ted H Szymanski
1Department of Electrical and Computer Engineering, McGill University, 3480 University Street, Montreal, Quebec, Canada, H3A 2A7. andrew.kirk@mcgill.ca
Applied Optics
|May 17, 2003
Summary
A novel free-space optical backplane was developed to link multiprocessor systems. This system enables high-speed data transfer using optical transmitters and receivers, improving computational performance.
Area of Science:
- Computer Engineering
- Optical Engineering
- Materials Science
Background:
- Multiprocessor systems require efficient interconnection architectures for optimal performance.
- Traditional electronic backplanes face limitations in bandwidth and scalability for high-performance computing.
- Free-space optics offers a potential solution for high-speed, parallel data communication.
Purpose of the Study:
- To design and implement a free-space optical backplane for multiprocessor applications.
- To interconnect four multiprocessor nodes using a novel optoelectronic VLSI chip.
- To demonstrate a 512-channel unidirectional ring interconnection system.
Main Methods:
- Development of optoelectronic VLSI chips with 256 optical transmitters and receivers each.
- Implementation of dual-rail multiple quantum-well modulators for optical transmission.
- Construction of a rigid free-space microoptical system for chip interconnection.
Main Results:
- Successful design and implementation of a free-space optical backplane.
- Demonstration of interconnection between four multiprocessor nodes via multiplexed 32-bit packets.
- Achieved a 512-channel unidirectional ring configuration for data flow.
Conclusions:
- The developed free-space optical backplane effectively interconnects multiprocessor nodes.
- The system shows promise for enhancing data communication in high-performance computing.
- Full design, implementation, and operational details are provided for future research.
Related Concept Videos
01:20Design Example: Capacitance Multiplier Circuit
In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
01:23Transmission Line Design Considerations
Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
01:24Bus 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,...
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,...
01:20Parallel Processing
The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...