Dual comb generating apparatus and spectroscopy system including the same
AssigneeElectronics and Telecommunications Research Institute
InventorMinje SONG
Life of this patent
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Abstract
A dual comb generating apparatus and a spectroscopy system including the same is provided. The dual comb generating apparatus includes a continuous-wave laser configured to output a continuous optical signal, a first RF source configured to generate a first RF signal, a second RF source configured to generate a second RF signal, a hybrid coupler configured to impart a phase difference to the first and second RF signals, and an electro-optic modulation module configured to generate two optical frequency combs with mutually different repetition rates and center frequencies from the optical signal, by using the first and second RF signals output from the hybrid coupler as driving signals.
Claims19
A dual comb generating apparatus, comprising:
- a continuous-wave laser configured to output a continuous optical signal;
- a first RF source configured to generate a first RF signal;
- a second RF source configured to generate a second RF signal;
- a hybrid coupler configured to impart a phase difference to the first and second RF signals;
- and
- an electro-optic modulation module configured to generate two optical frequency combs with mutually different repetition rates and center frequencies from the optical signal, by using the first and second RF signals output from the hybrid coupler as driving signals.
A spectroscopy system, comprising:
- a dual comb generating apparatus configured to generate two optical frequency combs with mutually different repetition rates and center frequencies from a continuous optical signal using first and second RF signals as driving signals, and irradiate a target sample with the two optical frequency combs;
- an optical filter module configured to receive an optical signal in which the two optical frequency combs are superimposed after interacting with the target sample, and to separate the optical signal by wavelength;
- and
- a detection module configured to convert the optical signal output from the optical filter module into an electrical signal and detect the electrical signal.
Dependencies are inferred from the claim text.