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Tunable four-pass narrow spectral bandwidth amplifier for use at approximately 508 nm

Arne Schwettmann1, Chris McGuffey, Savith Chauhan

  • 1Homer L Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma 73019, USA. shaffer@nhn.ou.edu

Applied Optics
|February 24, 2007
PubMed

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Bandpass Sampling01:17

Bandpass Sampling

In signal processing, bandpass sampling is an effective technique for sampling signals that have most of their energy concentrated within a narrow frequency band. This type of signal is known as a bandpass signal. The key principle of bandpass sampling involves sampling the signal at a rate that is greater than twice the signal's bandwidth to prevent aliasing.
A bandpass signal has a spectrum with a lower frequency limit, denoted as ω1, and an upper frequency limit, denoted as ω2. The spectrum...