Analyzing light by mode interference
AssigneeHewlett-Packard Development Company, L.P.
InventorsCharles M. Santori, Di Liang, Marco Fiorentino, David A. Fattal, Zhen Peng, Raymond G. Beausoleil, Andrei Faraon
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Abstract
Apparatuses and systems for analyzing light by mode interference are provided. An example of an apparatus for analyzing light by mode interference includes a number of waveguides to support in a multimode region two modes of the light of a particular polarization and a plurality of scattering objects offset from a center of at least one of the number of waveguides.
Claims15
An apparatus for analyzing light by mode interference, comprising:
- a number of waveguides to support in a multimode region two modes of the light of a particular polarization;
- and
- a plurality of scattering objects offset from a center of at least one of the number of waveguides,
- wherein the plurality of scattering objects is positioned at a spatial frequency associated with apices of a selected one of:
- an intensity of a first mode,
- an intensity of a second mode, and
- an intensity of an interference pattern of the first and second modes, and
- wherein at least one non-associated apex is between two associated apices such that the apices associated with the plurality of scattering objects are aliased to a lower spatial frequency.
An apparatus for analyzing light by mode interference, comprising:
- a number of waveguides to support two modes of the light that have a particular polarization;
- and
- a plurality of scattering objects offset from and substantially parallel to a center axis of each of the number of waveguides,
- wherein the plurality of scattering objects is positioned at a spatial frequency associated with apices of a selected one of:
- an intensity of a first mode,
- an intensity of a second mode, and
- an intensity of an interference pattern of the first and second modes,
- wherein at least one non-associated apex is between two associated apices such that the apices associated with the plurality of scattering objects are aliased to a lower spatial frequency, and
- wherein there is at least one scattering object between scattering objects associated with the two apices.
A system for analyzing light by mode interference, comprising:
- a plurality of scattering objects offset from and substantially parallel to a center axis of each of a number of waveguides;
- and
- wherein the number of waveguides is formed to support two modes of the light,
- wherein the plurality of scattering objects is positioned at a spatial frequency associated with apices of a selected one of:
- an intensity of a first mode,
- an intensity of a second mode, and
- an intensity of an interference pattern of the first and second modes, and
- wherein at least one non-associated apex is between two associated apices such that the apices associated with the plurality of scattering objects are aliased to a lower spatial frequency;
- and
- a charge coupled device with a spatial frequency of sensors co-aligned with the plurality of scattering objects positioned as such to directly collect signals emitted by the plurality of scattering objects.
Dependencies are inferred from the claim text.