Optical Delay Device
Optical Delay Device - Related Videos
07:47
Measuring Delay Discounting in Humans Using an Adjusting Amount Task
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Cited by 55 •
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Delay discounting refers to a decline in the value of a reward when it is delayed relative to when it is immediately available. We outline a computer-based delay discounting task that is easy to implement and allows for the quantification of the degree of delay discounting in human participants.
07:05
The Precision of Visual Working Memory with Delayed Estimation
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2023
Source: Laboratory of Jonathan Flombaum—Johns Hopkins University Human memory is limited. Throughout most of its history, experimental psychology has focused on investigating the discrete, quantitative limits of memory—how many individual pieces of information a person can remember. Recently, experimental psychologists have also become interested in more qualitative limits—how precisely is information stored? The concept of memory precision can be both intuitive and elusive at once. It is...
08:29
Thermal Measurement Techniques in Analytical Microfluidic Devices
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Cited by 6 •
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Here, we present three protocols for thermal measurements in microfluidic devices.
06:28
Field Measurement of Effective Leaf Area Index using Optical Device in Vegetation Canopy
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Cited by 2 •
2021
Fast and precise leaf area index (LAI) estimation in terrestrial ecosystems is crucial for a wide range of ecological studies and calibrating remote sensing products. Presented here is the protocol for using the new LP 110 optical device for taking ground-based in situ LAI measurements.
09:39
Optical Biosensing
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2023
Optical biosensors utilize light to detect the binding of a target molecule. These sensors can utilize a label molecule, which produces a measurable signal such as fluorescence, or these sensors can be label-free and use the changes in optical properties, such as refractive index, to sense for the binding of the target molecule. This video introduces both label and label-free optical biosensors, demonstrates their use in the laboratory, and shows some applications of the technology.
FAQs
The delay depends on the optical signal’s propagation path, including both its physical length and effective optical path length. Extending that path increases the interval before delivery, while tunable components can alter the effective path to adjust timing. This principle lets engineers set delays for synchronization, buffering, and controlled signal routing in photonic systems.
Fiber and waveguides provide guided paths that the signal traverses, while resonant cavities create delay through optical behavior within a confined structure. Tunable components modify the effective optical path when an adjustable interval is needed. These design choices allow optical delay devices to support fixed or adjustable timing requirements across photonic circuits and networks.
A delay can be useful beyond shifting arrival time when it also preserves phase or waveform information. Maintaining these properties supports accurate comparison and controlled processing of optical signals. That capability is especially relevant to interferometry and optical signal processing, where timing relationships and signal form influence measurement accuracy, filtering, or other system operations.
Propagation-path design, effective optical path length, loss, and adjustability directly influence performance. A suitable device must provide the required timing interval while limiting signal loss and, where needed, allowing the delay to be changed. These factors determine how effectively the system can synchronize signals, buffer data, filter inputs, or control optical switching.
In telecommunications, engineers can use these devices to manage signal timing, buffering, routing, and switching within optical networks. Radar systems can apply controlled delays when precise timing supports signal handling and system operation. In both areas, the value comes from controlling when an optical signal arrives without relying solely on electronic timing paths.
Interferometry benefits from controlled delays because measurements depend on defined timing relationships between optical signals. Optical signal processing uses delays as building blocks for functions such as filtering and controlled signal handling. By providing low-loss or adjustable timing paths, the devices can improve measurement accuracy and expand the timing control available in photonic systems.