Optical fiber connector in which Bragg grating is built

Abstract

An optical fiber connector embedded with a Bragg grating includes: a ferrule formed with a reception unit for inserting and fixing a temperature compensation connection port from one end, a space unit extended from the reception unit toward inside, and an optical fiber insertion hole penetrating a side surface of the other end along a center of an axial direction from an inclined surface gradually narrowed toward inside of the space unit; the temperature compensation connection port formed with a connection unit contacting with the reception unit of the ferrule, an optical fiber support unit having an outer diameter smaller than an inner diameter of the space unit of the ferrule from the connection unit and protruding to be spaced apart from an inlet of the ferrule by a predetermined distance to form a space for accommodating the Bragg grating and support an optical fiber, and the optical fiber insertion hole penetrating both ends along the center of the axial direction to insert the optical fiber; an optical fiber cable having the optical fiber inserted into the optical fiber insertion hole of the temperature compensation connection port and the optical fiber insertion hole of the ferrule and the Bragg grating placed in the space unit of the ferrule; and a socket, one end of which is fixed to the ferrule, and the other end of which is fixed to an optical fiber cladding of the optical fiber cable.

Description

technical field [0001] The invention relates to a fiber optic connector with a built-in Bragg grating, specifically used as a filter for optical communication that selectively reflects or transmits the wavelength band to be used, and monitors the chapping, displacement, deformation and stability of large structures such as bridges and tunnels In an optical fiber equipped with a Bragg grating used as an optical sensor that precisely measures pressure, stress, and elongation variation in the system, the reflection wavelength of the Bragg grating that occurs due to changes in the peripheral environment such as stress applied to the fiber grating from the outside and ambient temperature rise A fiber optic connector with a built-in Bragg grating that compensates for characteristic chirp and exhibits stable optical characteristics. Background technique [0002] Fiber Bragg grating (fiber Bragg grating) uses the light-induced refractive index modulation effect that occurs when the ...

AI Technical Summary

Problems solved by technology

However, the chirp rate measured at each temperature stage is different, but it is about 20~30pm / deg, which is about 2~3 times larger than the value of the chirp rate through the thermo-optic effect.

Images