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US 6,801,698 B2Granted
High index-contrast fiber waveguides and applications
AssigneeOmniGuide Communications
InventorsWesley A. King, Emilia Anderson, Marin Soljacic, Mihai Ibanescu, Torkel Engeness, Maksim Skorobogatiy, Steven G. Johnson, Ori Weisberg, Yoel Fink, Rokan U. Ahmad, Lori Pressman
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Abstract
High index-contrast fiber waveguides, materials for forming high index-contrast fiber waveguides, and applications of high index-contrast fiber waveguides are disclosed.
Claims48
A fiber waveguide having a waveguide axis, comprising:
- a first portion extending along the waveguide axis comprising a first material having an index of refraction, n1, a working temperature, Tw, and a softening temperature, Ts;
- a second portion extending along the waveguide axis comprising a second material having an index of refraction, n2, and a viscosity, η2, that varies as a function of temperature, T;
- wherein the absolute difference between n1 and n2 is at least 0.35 and η2 at Tw is at least 103 Poise and no more than 106 Poise, and η2 at Ts is at least 105 Poise and no more than 1013 Poise.
A method for making an fiber waveguide having a waveguide axis, comprising:
- providing a fiber preform comprising a first portion and a second portion surrounding the first portion, wherein the first portion comprises a first material having a refractive index n1 and the second portion comprises a second material having a refractive index n2, and |n1−n2|≧0.3
- heating the fiber preform to a temperature where the first and second portions have a viscosity between 103 Poise and 106 Poise;
- and
- drawing the heated fiber preform into the fiber waveguide.
1 more element
A method for making an fiber waveguide having a waveguide axis, comprising:
- providing a fiber preform comprising:
- a first portion extending along the waveguide axis comprising a first material having an index of refraction, n1, a working temperature, Tw, and a softening temperature, Ts;
- a second portion extending along the waveguide axis comprising a second material having an index of refraction, n2, and a viscosity, η2, that varies as a function of temperature, T;
- wherein the absolute difference between n1 and n2 is at least 0.35 and η2 at Tw is at least 103 Poise and no more than 106 Poise, and η2 at Ts is at least 105 Poise and no more than 1013 Poise;
- heating the fiber preform;
- and
- drawing the heated fiber preform into the fiber waveguide.
4 more elements
Dependencies are inferred from the claim text.