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US 12,761,078 B2Granted
Device for smoothing spectral transmission modulations and a method thereof
AssigneeNeola Medical AB
InventorMartin Hansson
Life of this patent
Estimating the term…
Abstract
A device, system and method for smoothing spectral transmission modulations in an optical fiber which includes at least one holder for coupling a portion of the optical fiber, a fiber bending member configured to cyclically moving a segment of the portion orthogonally to a longitudinal axis of the portion from an initial position. The fiber bending member is positioned adjacent the at least one holder and the movement changes a radius of a curvature of the portion.
Claims18
A system comprising:
- a light source connected to a first end of an optical fiber, wherein said light source is configured to be swept over a wavelength range for performing a spectroscopic measurement based on tunable diode laser absorption spectroscopy (TDLAS);
- and
- a device for smoothing spectral transmission modulations in said optical fiber during said spectroscopic measurement, the device comprising:
- at least one holder configured to couple a portion of said optical fiber to said device;
- and
- a fiber bender configured to cyclically move a segment of said portion orthogonally to a longitudinal axis of said portion from an initial position continuously during said spectroscopic measurement, wherein said fiber bender is positioned adjacent to said at least one holder and whereby said movement changes a radius of a curvature of said portion, thereby smoothing the spectral transmission modulations in the optical fiber by reducing interference originating from the optical fiber,
- wherein said smoothing of said spectral transmission modulations in the optical fiber reduces variations in a baseline when carrying out said spectroscopic measurement using light emitted from a second end of said optical fiber.
4 more elements
A method of smoothing spectral transmission modulations in an optical fiber, comprising:
- coupling said optical fiber to at least one holder;
- moving a segment of said optical fiber, using a fiber bender arranged adjacent to said at least on holder, orthogonally to a longitudinal axis of said optical fiber cyclically, wherein said moving of said segment changes a radius of a curvature of said segment;
- and
- sweeping a light source, connected at a first end to said optical fiber, over a wavelength range for performing a spectroscopic measurement using tunable diode laser absorption spectroscopy (TDLAS) based on light emitted from a second end of said optical fiber, such that variations in a baseline are reduced due to smoothing of said spectral transmission modulations in the optical fiber when carrying out said spectroscopic measurement.
1 more element
Dependencies are inferred from the claim text.