A device for realizing the splicing of an array fiber and a large-size quartz end cap comprises a carbon dioxide laser, a light splitter, a light beam shaper, a high reflectivity mirror, an image detection module, an array fiber and a carrier thereof, a large-size quartz end cap and a carrier thereof, a stepping motor, a thermodetector, and a computer; a laser beam emitted by the carbon dioxide laser is divided into two light beams through a light splitter, after the two light beams respectively pass through the beam shaper and the high reflectivity mirror, two strip-shaped light spots with uniform power density are integrally formed to heat a splicing face of the large-size quartz end cap, a uniform temperature field of a target splicing area is achieved through indirect heating and heat conduction.

A method of laser fusing an optical fiber to a silica element, such as another optical fiber or other, wherein the optical fiber is laterally fused to the silica element. The silica element may be another optical fiber or any other optical component.

A fusion splicer is capable of sensing whether or not the fusion splicer is in a stolen state in cooperation with a theft sensing device. The fusion splicer includes an authentication processing unit that authenticates the theft sensing device, a storage unit that stores identification information of the theft sensing device subjected to authentication processing, a decision unit that decides whether or not the fusion splicer is in a stolen state based on a communication condition with respect to the theft sensing device, a locking unit that locks at least a part of functions of the fusion splicer when it is decided that the fusion splicer is in a stolen state, a releasing unit that temporarily releases the locked function of the fusion splicer, and an input unit that receives an input of a release ID for releasing the locked state.

Apparatus include a first optical fiber including a core situated to propagate a signal beam at a signal wavelength and an unwanted stimulated Raman scattering (SRS) beam at an SRS wavelength associated with the signal wavelength, and a fiber Bragg grating (FBG) situated in a core of a second optical fiber optically coupled to the core of the first optical fiber, the FBG having a selected grating reflectivity associated with the SRS wavelength and being situated to reflect the SRS beam back along the core of the second optical fiber and to reduce a damage associated with propagation of the SRS beam to power sensitive laser system components optically coupled to the second optical fiber. Methods are also disclosed.

The present disclosure relates to a polymeric overcoating used as a splice protector, and a corresponding method of application where the resulting coated fusion spliced optical fibers or coated fusion spliced optical fiber ribbons can be bundled or stacked to reduce the size of splice protection.

A fusion splicer includes a first electrode, a second electrode, an optical fiber disposition unit, and a first conductive member. The first electrode has a first potential, the second electrode has a second potential lower than the first potential, and an arc discharge is generated therebetween. The optical fiber disposition unit has grooves in which first optical fibers and second optical fibers are accommodated. The first conductive member is provided apart from the grooves between the first electrode and the second electrode. The first conductive member has a third potential that is lower than the first potential and higher than the second potential, and is disposed at a position at which the shortest distance from one of the first electrode and the second electrode is shorter than the shortest distance from the other of the first electrode and the second electrode.

A laser device includes: a laser unit that outputs laser light; an output end that launches the laser light; a first fusion splice portion; and a second fusion splice portion. In each of the first fusion splice portion and the second fusion splice portion, two multi-mode fibers are fusion-spliced. Each of the two multi-mode fibers include a core through which the laser light propagates and a cladding that surrounds the core. The first fusion splice portion is disposed closer to the laser unit than is the second fusion splice portion. At least a part of the core in the first fusion splice portion contains a dopant that is the same type as a dopant contained in the cladding in the first fusion splice portion for decreasing a refractive index.

A fusion splicer for fusion-splicing a first group of optical fibers and a second group of optical fibers by arc discharge is disclosed. The fusion splicer includes first and second electrode rods, first and second fiber holding parts, and a first shield. The electrode rods generate the arc discharge therebetween. The first fiber holding part has a first plurality of V-grooves positioning the first group of optical fibers. The second fiber holding part has a second plurality of V-grooves positioning the second group of optical fibers. The first shield is located between the first and second plurality of V-grooves and the first electrode rod in a direction along a center line connecting a tip of the first electrode rod to a tip of the second electrode rod. The first shield is formed of an insulating material having heat resisting properties withstanding 1000 or more degrees Celsius.

A fiber optic cable and connector assembly including a fiber optic connector mounted at the end of a fiber optic cable. The fiber optic connector includes a ferrule assembly including a stub fiber supported within a ferrule. The stub fiber is fusion spliced to an optical fiber of the fiber optic cable at a location within the fiber optic connector.

A fiber optic cable and connector assembly including a fiber optic connector mounted at the end of a fiber optic cable. The fiber optic connector includes a ferrule assembly including a stub fiber supported within a ferrule. The stub fiber is fusion spliced to an optical fiber of the fiber optic cable at a location within the fiber optic connector.