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US 2013/0182730 A1Published application
Slot waveguide structure for wavelength tunable laser
AssigneeMars Technology
InventorsWenjun Fan, Ruolln Li
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Abstract
Exemplary embodiments provide a wavelength tunable laser device and methods using the wavelength tunable laser device for a laser tuning. An exemplary wavelength tunable laser device can include an active gain element, a slot waveguide structure, and a wavelength tuning structure including heating elements disposed around the grating structure for a wavelength selection.
Claims20
A laser device comprising:
- an active gain element;
- a slot waveguide structure optically coupled with the active gain element, wherein the slot waveguide structure comprises a cladding layer covering a slot region formed by and between a pair of strips;
- and
- a wavelength tuning structure disposed over the cladding layer of the slot waveguide structure, wherein the wavelength tuning structure comprises a gating structure and a plurality of heating elements disposed around the grating structure.
1 more element
A method for laser tuning comprising:
- passing a spectrum of light from an active gain element into a slot waveguide structure, wherein the spectrum of t reflects between an end mirror of the active gain element and a grating structure configured over the slot waveguide structure;
- locally adjusting a temperature of the grating structure to adjust a refractive index of the grating structure;
- and
- selecting a reflection peak wavelength from the reflected spectrum of light by controlling the temperature of the grating structure;
- wherein the slot waveguide structure comprises a cladding layer covering a slot region formed and between a pair of strips.
2 more elements
Dependencies are inferred from the claim text.