Phase error compensating apparatus
AssigneeElectronics and Telecomunications Research Institute
InventorsHeuk Park, Sae Kyoung Kang, Hwan Seok Chung
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Abstract
Provided is a phase error compensating apparatus. The phase error compensating apparatus may include a waveguide array disposed between a first free propagation region and a second free propagation region and configured to allow a light signal passed through the first free propagation region to move toward the second free propagation region, in which a length of each of the waveguides included in the waveguide array may be adjusted to compensate for a phase error of light signals passed through the waveguides.
Claims6
A phase error compensating apparatus, comprising:
- an input waveguide corresponding to an input port to which a light signal is to be input;
- an output waveguide corresponding to an output port from which a light signal is to be output;
- a first free propagation region in which the light signal input through the input waveguide is to be propagated;
- a second free propagation region in which a light signal is to be propagated toward the output waveguide;
- and
- a waveguide array comprising waveguides, disposed between the first free propagation region and the second free propagation region, and configured to allow a light signal passed through the first free propagation region to move toward the second free propagation region,
- wherein lengths of the waveguides are adjusted to compensate for a phase error of light signals passed through the waveguides, and
- wherein a length of a waveguide among the waveguides is adjusted based on a phase error of a light signal passed through the waveguide, a center wavelength of a light signal passed through the waveguide array, and an effective refractive index of the waveguide.
A phase error compensating apparatus, comprising:
- an input waveguide corresponding to an input port to which a light signal is to be input;
- an output waveguide corresponding to an output port from which a light signal is to be output;
- a first free propagation region in which a light signal input through the input waveguide is to be propagated;
- a second free propagation region in which a light signal is to be propagated toward the output waveguide;
- and
- a waveguide array comprising waveguides, disposed between the first free propagation region and the second free propagation region, and configured to allow the light signal passed through the first free propagation region to move toward the second free propagation region,
- wherein lengths of the waveguides are adjusted to compensate for a phase error of light signals passed through the waveguides, and
- wherein a length of each of the waveguides is adjusted based on a phase of a waveguide corresponding to a light signal having a greatest phase error among the light signals passed through the waveguides.
Dependencies are inferred from the claim text.