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Optical Intrinsic Signal (OIS) refers to the changes in light absorption and scattering properties of biological tissues that occur in response to physiological processes, such as neuronal activity. It is primarily used in neuroimaging to monitor brain activity by detecting changes in blood volume and oxygenation levels. OIS provides high spatial resolution and can be used to study brain functions in real time, making it a valuable tool in both basic research and clinical applications.
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How you can convert an electrical signal into an optical signal?
electrical signal can be converted to an optical sigal by using a LED or SOA(semiconductor optical amplifier). LED is the cheaper option but have the drawback of larger linewidth. Typically used for LAN (local area network). SOA produces an optical signal mostly by direct modulation tecnique .
What is meant by atenuation in fiber optics?
Attenuation in fiber means 'loss of optical power' suffered by the optical signal in fiber itself.
Is the reflection obtain from a transistor?
Transistors do not inherently provide reflection like optical surfaces; instead, they function as electronic switches or amplifiers. However, in circuits involving transistors, signal reflections can occur in transmission lines or at impedance mismatches. These reflections are related to the electrical signals rather than optical reflection. Thus, while transistors can contribute to signal processing that may involve reflection in a broader sense, they do not produce reflection in the optical sense.
How does collimation affect the primary signal?
Collimation affects the primary signal by ensuring that the emitted waves are parallel, which enhances the signal's coherence and focus. This reduces dispersion and scattering, allowing for a more precise measurement or detection of the signal. Improved collimation can lead to a stronger and more accurate signal, enhancing the overall performance of optical systems or detectors. Conversely, poor collimation can result in signal loss and decreased quality.
What the importance of intrinsic factor?
Intrinsic factor is glycoprotein that is produced by the parietal cells of the stomach.
What has the author Richard S Yoon written?
Richard S. Yoon has written: 'The characterization of cortical spreading depression in rats using intrinsic optical signal'
What is different between optical fiber signal and electrical signal?
A fiber optical signal is based on the transfer of photons, while an electrical signal is based on the transfer of electrons.
How you can convert an electrical signal into an optical signal?
electrical signal can be converted to an optical sigal by using a LED or SOA(semiconductor optical amplifier). LED is the cheaper option but have the drawback of larger linewidth. Typically used for LAN (local area network). SOA produces an optical signal mostly by direct modulation tecnique .
What has the author J E W Mayhew written?
J. E. W. Mayhew has written: 'A Model of the intrinsic image signal and an evaluation of the methodology of intrinsic image signal analysis'
How camera tube in TV converts optical signal into electrical signal?
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What is the function of detector in UV spectrophotometer?
Detector converts optical signal to electric signal
What are the important blocks of point to point links in optical communication.?
In optical communication, important blocks of point-to-point links include the light source (typically a laser), which generates the optical signal; the optical fiber, which transmits the signal over distances; and the photodetector, which converts the received optical signal back into electrical form. Additional components may include amplifiers to boost signal strength, multiplexers and demultiplexers for combining and separating multiple signals, and various types of connectors and splices for ensuring effective signal transmission. These elements work together to ensure efficient and reliable communication over optical networks.
What optical fiber used for?
Long Distance signal transmission!
What is analog signal full definition?
a continuously variable signal. it could be electronic, mechanical, hydraulic, optical, etc.
Can you propagate optical signal over electrical network?
only over fiber
Part of the eye that detects light and sends signal to brain?
The retina detects light and the optical nerve sends the signal to the brain.
Does laser clipping occur in an optical transmitter or a optical receiver?
Laser clipping primarily occurs in an optical transmitter. It happens when the input signal to the laser exceeds the maximum output level that the laser can produce, leading to distortion and a nonlinear response. This can result in signal degradation and loss of information integrity. In contrast, optical receivers generally deal with signal detection and amplification rather than generating light, so clipping is not a relevant issue in that context.
