Optical fiber illumination systems producing color movement

An illumination system comprising:

• a light-diffusing optical fiber comprising a first input end and a second input end, the light-diffusing optical fiber having a glass core, a cladding surrounding the glass core, and an outer surface, and further comprising a plurality of nano-sized structures situated within the glass core or at a core-cladding boundary, the nano-sized structures being configured to scatter light;
• a first light source optically coupled to the first input end of the light-diffusing optical fiber and configured to generate light having a first wavelength, wherein the intensity of light emitted from the first light source is adjustable;
• a second light source optically coupled to the second input end of the light-diffusing optical fiber and configured to generate light having a second wavelength, wherein the first wavelength, wherein the intensity of light emitted from the second light source is adjustable;
• a first potentiometer configured to control a power input to said first light source;
• and
• a second potentiometer configured to control a power input to said second light source;
• wherein a color variation forms within the light-diffusing optical fiber at a junction of the light emitted from the first light source and the light emitted from the second light source;
• wherein the location of the color variation is adjustable along the light-diffusing optical fiber by adjusting intensity of light emitted from one or more of the first light source and the second light source utilizing one or more of the first and second potentiometers.

An illumination system comprising:

• a light-diffusing optical fiber comprising a first input end and a second input end;
• a first light source optically coupled to the first input end of the light-diffusing optical fiber and configured to generate light having a first wavelength, wherein the intensity of light emitted from the first light source is adjustable;
• a second light source optically coupled to the second input end of the light-diffusing optical fiber and configured to generate light having a second wavelength, wherein the first wavelength, wherein the intensity of light emitted from the second light source is adjustable;
• wherein a color variation forms within the light-diffusing optical fiber at a junction of the light emitted from the first light source and the light emitted from the second light source;
• wherein the location of the color variation is adjustable along the light-diffusing optical fiber by adjusting intensity of light emitted from one or more of the first light source and the second light source.