Optical Modulator Directional Measurement System
OwnerKirk S. Giboneyinventor
Life of this patent
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Abstract
In an optical modulator directional measurement system embodiment, one or more modulation waves may be measured and directionally discriminated by measuring the modulations of one or more lightwaves. The optical modulator transmission function magnitude for a most phase-matched modulation may be substantially greater than that for other modulations. At sufficiently high modulation frequency, the most phase-matched modulation magnitude may be substantially greater than the other modulation magnitudes. Accordingly, a modulation wave may be distinctly measured by measuring the modulation of the most phase-matched lightwave.
Claims22
1-12. (canceled)
a directional measurement system comprising:
- a first travelling-wave optical modulator, said first travelling-wave optical modulator comprising a first modulation waveguide, and
- a second travelling-wave optical modulator, said second travelling-wave optical modulator comprising a second modulation waveguide, said second modulation waveguide and said first modulation waveguide connected in series electrical relation,
- the system adapted for measurement of:
- a first lightwave modulation, said first lightwave modulation including modulation of a first lightwave by a modulation wave in said first travelling-wave optical modulator while said first lightwave and said modulation wave co-propagate, and
- a second lightwave modulation, said second lightwave modulation including modulation of a second lightwave by said modulation wave in said second travelling-wave optical modulator while said second lightwave and said modulation wave counter-propagate.
14-20. (canceled)
a directional measurement system comprising a first electro-optic modulator and a second electro-optic modulator,
- the system configured for:
- propagation of a modulation wave in said first electro-optic modulator and in said second electro-optic modulator,
- propagation of a first lightwave in said first electro-optic modulator, said first lightwave propagating at a first angle relative to said modulation wave in said first electro-optic modulator, and
- propagation of a second lightwave in said second electro-optic modulator, said second lightwave propagating at a second angle relative to said modulation wave in said second electro-optic modulator, said second angle being substantially unequal to said first angle.
a directional measurement system comprising an electro-optic modulator and a gap waveguide,
- the system configured for:
- propagation of a modulation wave in said electro-optic modulator, said modulation wave guided by said gap waveguide,
- propagation of a first lightwave in said electro-optic modulator, said first lightwave propagating at a first angle relative to said modulation wave in said electro-optic modulator, and
- propagation of a second lightwave in said electro-optic modulator, said second lightwave propagating at a second angle relative to said modulation wave in said electro-optic modulator, said second angle being substantially unequal to said first angle.
a method for making directional measurements, the method comprising:
- propagating a modulation wave in a first electro-optic modulator and in a second electro-optic modulator,
- propagating a first lightwave in said first electro-optic modulator, said first lightwave propagating at a first angle relative to said modulation wave in said first electro-optic modulator,
- propagating a second lightwave in said second electro-optic modulator, said second lightwave propagating at a second angle relative to said modulation wave in said second electro-optic modulator, said second angle being substantially unequal to said first angle.
Dependencies are inferred from the claim text.