Abstract: In accordance with embodiments there is provided manufacturing processes for fibre optic sensors. In an example, a portion of a fiber optic cable is coated with a thin film layer and placed in a channel of a fiber carrying flexible member for a fiber optic sensor. The portion is embedded in the channel using one of: a thermal curing process after filling the channel with a metallic liquid suspension or polymeric adhesive; and an electroplating or electroless plating process. Filling the channel may comprises performing a controlled dispensing using an automated process such as a drop-on-demand deposition process. In an example, a fiber optical cable is placed in a channel of a flexible member. Micro-laser welding or electron beam welding is used to locally melt the member areas adjacent to the cable resulting in the flow of liquid around the fiber creating a solid structure with embedded fiber after solidification.

Abstract: In accordance with embodiments there is provided manufacturing processes for fibre optic sensors. In an example, a portion of a fiber optic cable is coated with a thin film layer and placed in a channel of a fiber carrying flexible member for a fiber optic sensor. The portion is embedded in the channel using one of: a thermal curing process after filling the channel with a metallic liquid suspension or polymeric adhesive; and an electroplating or electroless plating process. Filling the channel may comprises performing a controlled dispensing using an automated process such as a drop-on-demand deposition process. In an example, a fiber optical cable is placed in a channel of a flexible member. Micro-laser welding or electron beam welding is used to locally melt the member areas adjacent to the cable resulting in the flow of liquid around the fiber creating a solid structure with embedded fiber after solidification.

Abstract: Fiber optic sensors for distributed monitoring of physical parameters along a fiber optic cable are disclosed. A sensor comprises a fiber optic cable mounted to a flexible member disposed in a sensor housing body. The flexible member is coupled to the body and to a bladder in the body. The bladder is exposed to an immediate external environment to the sensor through a port in the body so that changes in pressure or liquid level in the environment cause changes to the size of the bladder, which in turn change the shape of the flexible body to impart mechanical strain on the cable. The cable may be inscribed by fiber Bragg gratings. Changes in spectra may be analyzed to measure the physical parameters. Simultaneous measurement of temperature, liquid and gas pressure, vibration, mechanical strain, liquid level, liquid flow rate, and deformation in a distributed fashion generates a 3-D environmental map.

Abstract: Fiber optic sensors for distributed monitoring of physical parameters along a fiber optic cable are disclosed. A sensor comprises a fiber optic cable mounted to a flexible member disposed in a sensor housing body. The flexible member is coupled to the body and to a bladder in the body. The bladder is exposed to an immediate external environment to the sensor through a port in the body so that changes in pressure or liquid level in the environment cause changes to the size of the bladder, which in turn change the shape of the flexible body to impart mechanical strain on the cable. The cable may be inscribed by fiber Bragg gratings. Changes in spectra may be analyzed to measure the physical parameters. Simultaneous measurement of temperature, liquid and gas pressure, vibration, mechanical strain, liquid level, liquid flow rate, and deformation in a distributed fashion generates a 3-D environmental map.