Optical: systems and elements – Optical demodulator
Reexamination Certificate
2006-12-05
2006-12-05
Lee, John D. (Department: 2874)
Optical: systems and elements
Optical demodulator
C359S326000
Reexamination Certificate
active
07145713
ABSTRACT:
Techniques for recovering optical spectral features include receiving a detected time series that represents a temporally varying intensity of an optical signal. The optical signal is formed in response to an interaction between a target optical spectrum and a chirped optical field. The chirped optical field is an optical field that has a monochromatic frequency that varies in time. The target optical spectrum is an optical frequency dependent optical property of a material or device. A phase correction factor is determined based only on one or more properties of the chirped optical field. The detected time series is corrected based on the phase correction factor to produce an output time series that reproduces in time a shape of the target spectrum in frequency. These techniques allow for fast measurement of spectral features and eliminate the need for prior knowledge of the target optical spectrum to adjust the chirp rate.
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Babbitt William R.
Chang Tiejun
Merkel Kristian
Tian Mingzhen
Evans & Molinelli PLLC
Lee John D.
Molinelli Eugene
Montana State University
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