Light comb generating device and spectrometers including same
AssigneeElectronics and Telecommunications Research Institute
InventorsOh Kee Kwon, Kisoo Kim, Sung Bock Kim, Young Ahn Leem
Life of this patent
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Abstract
A light comb generating device according to a disclosed embodiment includes a light source for generating light in a reference wavelength band and outputting the generated light, and an optical comb generator for generating a light comb having a reference comb interval from the output light, wherein the light source changes a wavelength of the output light as much as a reference frequency interval for every reference time interval, the light comb is generated within a wavelength range of the reference frequency interval, and the reference wavelength band may be at least about 3 μm and no greater than about 30 μm.
Claims13
A light comb generating device comprising:
- a light source configured to generate light in a mid-infrared wavelength band of at least about 3 μm and no greater than about 30 μm and to modulate and output the generated light;
- and
- an optical comb generator configured to generate a light comb having a reference comb interval from the output light,
- wherein the light source changes the wavelength of the output light stepwise as much as a reference frequency interval for every reference time interval, and the light comb is generated within a wavelength range of the reference frequency interval.
A spectrometer comprising:
- a cell configured to fill a sample thereinto;
- a light transceiver configured to transmit or receive light in a reference wavelength band;
- and
- a dual optical comb generator configured to split the light received from the light transceiver into first light and second light, and generate a first light comb from the first light and generate a second light comb from the second light, wherein:
- the dual optical comb generator comprises a distributor configured to separate the first light and the second light from the received light,
- the first light comb and the second light comb respectively have a first frequency interval and a second frequency interval, the first light comb returns to the dual optical comb generator after passing through the cell, and
- the dual optical comb generator transmits an optical signal in which the generated second light comb and the returned first light comb are combined.
Dependencies are inferred from the claim text.