Optical self-heterodyne detection system including optical frequency comb light source
AssigneeElectronics and Telecommunications Research Institute
InventorsMinhyup Song, Minje Song, Joon Tae Ahn, Taehyun Lee, Seungyoung Lim, Young Jin Jung, Gyu Dong Choi
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Abstract
Provided is an optical self-heterodyne detection system. The system includes a light source configured to generate light, a photodetector configured to detect the light, a programmable filter provided between the photodetector and the light source, and an electrical spectrum analyzer connected to the photodetector and configured to analyze a frequency and wavelength of the light using a detection signal of the photodetector. The light source may include a frequency comb light source.
Claims13
An optical self-heterodyne detection system comprising:
- a light source configured to generate light;
- a photodetector configured to detect the light;
- a programmable filter provided between the photodetector and the light source;
- and
- an electrical spectrum analyzer connected to the photodetector and configured to analyze a frequency and wavelength of the light using a detection signal of the photodetector,
- wherein the light source includes a frequency comb light source,
- wherein the optical self-heterodyne detection system further comprises an interferometer,
- wherein the interferometer includes:
- an input coupler provided between the light source and the programmable filter;
- an output coupler provided between the programmable filter and the photodetector;
- and
- branch waveguides branching off from the input coupler and connected to the output coupler,
- wherein the branch waveguides include:
- a first branch waveguide;
- and
- a second branch waveguide that is in parallel with the first branch waveguide, and
- wherein the programmable filter includes:
- a first programmable filter provided to the first branch waveguide;
- and
- a second programmable filter provided to the second branch waveguide.
An optical self-heterodyne detection system comprising:
- a frequency comb light source configured to generate light;
- a photodetector configured to detect the light;
- an electrical spectrum analyzer connected to the photodetector and configured to analyze a frequency and wavelength of the light using a detection signal of the photodetector;
- an interferometer including an input coupler provided between the frequency comb light source and the photodetector and receiving the light, branch waveguides branching off from the input coupler, and an output coupler connected to the branch waveguides;
- and
- programmable filters provided to the branch waveguides and selecting peak wavelengths of the light.
An optical self-heterodyne detection system comprising:
- a frequency comb light source configured to generate light;
- a photodetector configured to detect the light;
- an electrical spectrum analyzer connected to the photodetector and configured to analyze a frequency and wavelength of the light using a detection signal of the photodetector;
- an interferometer including an input coupler provided between the frequency comb light source and the photodetector and receiving the light, first and second branch waveguides branching off from the input coupler, and an output coupler connected to the first and second branch waveguides;
- first and second programmable filters provided to the first and second branch waveguides and selecting peak wavelengths of the light;
- and
- a first nonlinear crystal plate provided between the frequency comb light source and the input coupler.
Dependencies are inferred from the claim text.