Optical spectrometry method and optical spectrometer
AssigneeXiamen University
InventorsQuan Liu, Yi Zhang
Life of this patent
Estimating the term…
Abstract
Embodiments are directed to an optical spectrometry method, comprising: generating a sequence of 2D Hadamard masks along the time dimension, wherein each 2D Hadamard mask is arranged with a wavelength dimension and a coefficient dimension; detecting an optical signal from light transmitted through the sequence of 2D Hadamard masks; and reconstructing a spectrum to be detected by analyzing the optical signal, wherein each 2D Hadamard mask in the sequence of 2D Hadamard masks comprises a plurality of columns along the wavelength dimension, each column corresponding to a different Hadamard coefficient, and having different respective sequency values along the time dimension.
Claims15
An optical spectrometry method, comprising:
- generating a sequence of 2D masks along a time dimension, wherein each 2D mask is arranged with a wavelength dimension and a coefficient dimension, and each 2D mask in the sequence of 2D masks comprises a plurality of columns or rows, each column corresponding to a different coefficient and having different respective sequency values along the time dimension, or each row corresponding to a different wavelength and having different respective sequency values along the time dimension;
- receiving an optical signal from light modulated by the sequence of 2D masks, wherein the coefficient in each column or the wavelength in each row is encoded in the time dimension with a different sequency value;
- detecting all coefficients or all wavelengths simultaneously;
- and
- reconstructing a spectrum to be detected by analyzing the optical signal.
An optical spectrometer, comprising:
- one or more processors;
- a spatial light modulator in communication with at least one of the one or more processors;
- and
- a detector for detecting an optical signal from input light modulated by the spatial light modulator,
- wherein the one or more processors are configured to:
- generating a sequence of 2D masks along a time dimension, wherein each 2D mask is arranged with a wavelength dimension and a coefficient dimension, and each 2D mask in the sequence of 2D masks comprises a plurality of columns or rows, each column corresponding to a different coefficient and having different respective sequency values along the time dimension, or each row corresponding to a different wavelength and having different respective sequency values along the time dimension;
- receiving an optical signal from light modulated by the sequence of 2D masks, wherein the coefficient in each column or the wavelength in each row is encoded in the time dimension with a different sequency value;
- detecting all coefficients or all wavelengths simultaneously;
- and
- reconstructing a spectrum to be detected by analyzing the optical signal.
Dependencies are inferred from the claim text.