Related Experiment Video
Updated: Jun 10, 2026
07:45
Quasi-light Storage for Optical Data Packets
Published on: February 6, 2014
Concept for an optical bus-type interconnection network
Applied Optics
|August 20, 2010
Summary
This study introduces parallel optoelectronic bus interconnections for efficient data transfer. It demonstrates that space-invariant systems significantly reduce energy requirements compared to space-variant ones for optical communications.
Area of Science:
- Optoelectronics
- Optical Communications
- Parallel Computing
Background:
- Parallel optoelectronic bus-type interconnections are crucial for high-speed data transfer.
- Evaluating fan-in choices in free-space optical systems is essential for system design.
Purpose of the Study:
- To present a concept for parallel optoelectronic bus-type interconnections.
- To analyze energy efficiency in free-space optical systems for many-to-many communication.
Main Methods:
- Discussion of multimode versus single-mode fan-ins in free-space optics.
- Theoretical analysis of energy requirements for space-invariant versus space-variant systems.
- Experimental demonstration using a Dammann grating as a multiple beam splitter.
Main Results:
- Energy requirements for space-invariant systems scale with 2N, significantly lower than N(2) for space-variant systems.
- A Dammann grating effectively functions as a multiple beam splitter for simultaneous fan-out and fan-in.
- Theoretical performance analysis of the proposed design is presented.
Conclusions:
- Space-invariant multiple beam-splitting systems offer superior energy efficiency for parallel optoelectronic bus interconnections.
- The proposed concept and experimental validation pave the way for more scalable optical interconnects.
Related Concept Videos
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,...
01:25Network Function of a Circuit
Frequency response analysis in electrical circuits provides vital insights into a circuit's behavior as the frequency of the input signal changes. The transfer function, a mathematical tool, is instrumental in understanding this behavior. It defines the relationship between phasor output and input and comes in four types: voltage gain, current gain, transfer impedance, and transfer admittance. The critical components of the transfer function are the poles and zeros.
01:14Circuit Terminology
An electrical network is a system composed of interconnected elements, such as resistors, capacitors, inductors, and voltage or current sources. Unlike a circuit, an electrical network does not necessarily form a closed path. In other words, while all circuits can be considered networks due to their interconnected nature, not every network qualifies as a circuit.
A circuit, on the other hand, is also an interconnected system of electrical elements but must contain one or more closed paths.
A circuit, on the other hand, is also an interconnected system of electrical elements but must contain one or more closed paths.
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...
01:31Energy Stored In A Coaxial Cable
A coaxial cable consists of a central copper conductor used for transmitting signals, followed by an insulator shield, a metallic braided mesh that prevents signal interference, and a plastic layer that encases the entire assembly.
In the simplest form, a coaxial cable can be represented by two long hollow concentric cylinders in which the current flows in opposite directions. The magnetic field inside and outside the coaxial cable is determined by using Ampère's law. The magnetic field inside...
In the simplest form, a coaxial cable can be represented by two long hollow concentric cylinders in which the current flows in opposite directions. The magnetic field inside and outside the coaxial cable is determined by using Ampère's law. The magnetic field inside...
01:29Electrical Transport
The electrical transport property of a material is defined by its resistance and conductivity. Resistance is the measure of a material's ability to resist the flow of electric current, while conductivity gauges its ability to allow the current to pass through, depending on the geometry of the measurement cell, such as electrode spacing and area. Conductivity is measured in Siemens (S). There are different types of conductance, including specific conductance, equivalent conductance, and molar...