Bragg grated fiber optic fluctuation sensing and monitoring system

A method for placing a medical device into a body of a patient, the method comprising:

• providing a broadband incident light signal to an optical fiber included within the medical device, wherein the optical fiber includes one or more core fibers, each of the one or more core fibers including a plurality of reflective gratings distributed along a longitudinal length of a corresponding core fiber and each of the plurality of reflective gratings being configured to (i) reflect a light signal of a different spectral width based on received incident light, and (ii) change a characteristic of the reflected light signal based on strain experienced by the optical fiber;
• receiving reflected light signals of different spectral widths of the broadband incident light signal by one or more of a plurality of sensors;
• processing the reflected light signals associated with the one or more core fibers to detect fluctuations of a portion of the optical fiber;
• and
• determining a location of the portion of the optical fiber or a defect affecting a vessel in which the portion is disposed based on the detected fluctuations.

A non-transitory computer-readable medium having stored thereon logic that, when executed by one or more processors, causes operations including:

• providing a broadband incident light signal to an optical fiber included within a medical device, wherein the optical fiber includes one or more core fibers, each of the one or more core fibers including a plurality of reflective gratings distributed along a longitudinal length of a corresponding core fiber and each of the plurality of reflective gratings being configured to (i) reflect a light signal of a different spectral width based on received incident light, and (ii) change a characteristic of the reflected light signal based on strain experienced by the optical fiber;
• receiving reflected light signals of different spectral widths of the broadband incident light signal by one or more of the plurality of sensors;
• processing the reflected light signals associated with the one or more core fibers to detect fluctuations of a portion of the optical fiber;
• and
• determining a location of the portion of the optical fiber or a defect affecting a vessel in which the portion is disposed based on the detected fluctuations.