Superfluorescent fiber source with enhanced mean wavelength stability
First Claim
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1. A method of generating light using a superfluorescent fiber source (SFS), the method comprising:
- providing a SFS having a mean wavelength influenced by a pump light wavelength, the SFS comprising a doped fiber having a first end, a second end, and a length between the first end and the second end; and
pumping the fiber with pump light from a pump source having a wavelength dependent on the temperature of the pump source and dependent on the power of the pump light, wherein the length of the fiber is selected to compromise between reduction of the dependence of the mean wavelength on the pump light power and reduction of the contribution of the forward amplified spantaneous emission light produced by the fiber to the output light.
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Abstract
A doped superfluorescent fiber source (SFS) has an enhanced mean wavelength stability. A method stabilizes the mean wavelength of a SFS. The method includes pumping the SFS with pump light from a pump source having a wavelength dependent on the temperature of the pump source and dependent on the power of the pump light. The length of the fiber is selected to compromise between reduction of the dependence of the mean wavelength on the pump light power and reduction of the contribution of the forward amplified spantaneous emission light produced by the fiber to the output light.
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Citations
18 Claims
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1. A method of generating light using a superfluorescent fiber source (SFS), the method comprising:
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providing a SFS having a mean wavelength influenced by a pump light wavelength, the SFS comprising a doped fiber having a first end, a second end, and a length between the first end and the second end; and pumping the fiber with pump light from a pump source having a wavelength dependent on the temperature of the pump source and dependent on the power of the pump light, wherein the length of the fiber is selected to compromise between reduction of the dependence of the mean wavelength on the pump light power and reduction of the contribution of the forward amplified spantaneous emission light produced by the fiber to the output light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A superfluorescent fiber source (SFS) comprising:
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a fiber having a first end, a second end, and a length between the first end and the second end, the fiber responsive to light by producing forward amplified spontaneous emission light and backward amplified spontaneous emission light; a light source optically coupled to the first end of the fiber, the light source producing light having a wavelength dependent on the temperature of the light source and dependent on the power of the light produced by the light source; and a reflective element optically coupled to the first end of the fiber and configured to reflect the backward amplified spontaneous emission light to the fiber, the fiber amplifying the reflected light, wherein output light from the fiber comprising the forward amplified spontaneous emission light and the reflected and amplified light is transmitted through the second end of the fiber, wherein the length is selected to compromise between reduction of the dependence of a mean wavelength of the output light on the power of the light produced by the light source and reduction of the contribution of the forward amplified spontaneous emission light to the output light. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification