US2020371297A1PendingUtilityA1

Ferrule, fiber connector, and ferrule production method

64
Assignee: HUAWEI TECH CO LTDPriority: Feb 11, 2018Filed: Aug 10, 2020Published: Nov 26, 2020
Est. expiryFeb 11, 2038(~11.5 yrs left)· nominal 20-yr term from priority
Inventors:Dan GuoBaoqi Wang
G03F 7/0002G02B 1/115G02B 1/111C23C 14/34C23C 14/24C23C 14/12C23C 14/10C23C 14/083C23C 14/081G02B 6/3845G02B 6/3818G02B 6/3885G02B 6/3847G02B 6/3882G02B 6/403G02B 6/3807
64
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Claims

Abstract

A ferrule is provided, the fiber is inserted into a through hole axially disposed in the ferrule body, a first end of the fiber is located inside the through hole, a vertical distance between an end face of the first end of the fiber and a plane on which a connection end face of the ferrule body is located is a first preset distance, and the first preset distance is a distance that can leave a gap between a fiber of the ferrule and a fiber of another ferrule after the ferrule abuts the another ferrule.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A ferrule, comprising a ferrule body and at least one fiber, wherein
 at least one through hole is axially disposed inside the ferrule body, each fiber is inserted into a corresponding through hole, a first end of the fiber is located inside the through hole, and a vertical distance between an end face of the first end of the fiber and a plane on which a connection end face of the ferrule body is located is a first preset distance, wherein the connection end face is an end face that is of the ferrule and that abuts another ferrule, and the first preset distance is a distance that can leave a gap between the fiber of the ferrule and a fiber of the another ferrule after the ferrule abuts the another ferrule; and   the through hole comprises a first section of through hole, a plane on which a top of the first section of through hole is located is the plane on which the connection end face is located, an area of any cross section of the first section of through hole in a direction vertical to an axial direction is greater than an area of the end face of the first end of the fiber, and a projection of the fiber in the axial direction does not coincide with a projection of the any cross section of the first section of through hole in the direction vertical to the axial direction.   
     
     
         2 . The ferrule according to  claim 1 , wherein an antireflection coating is plated on an outer wall of the fiber located inside the first section of through hole. 
     
     
         3 . The ferrule according to  claim 1 , wherein an antireflection coating is plated on a hole wall of the first section of through hole. 
     
     
         4 . The ferrule according to  claim 1 , wherein an area of a cross section of the first section of through hole in the direction vertical to the axial direction gradually increases from a bottom to the top of the first section of through hole, the bottom of the first section of through hole is a top of a second section of through hole, and the second section of through hole is a through hole other than the first section of through hole in the through hole. 
     
     
         5 . The ferrule according to  claim 1 , wherein a length of the first section of through hole is greater than or equal to the first preset distance. 
     
     
         6 . The ferrule according to  claim 1 , wherein there is a chamfer at an orifice of the first section of through hole. 
     
     
         7 . The ferrule according to  claim 1 , wherein the first preset distance is greater than 1.8 μm. 
     
     
         8 . A fiber connector, comprising a housing and at least one ferrule, the housing is configured to fasten the at least one ferrule, wherein, each of the ferrule comprises a ferrule body and at least one fiber, wherein:
 at least one through hole is axially disposed inside the ferrule body, each fiber is inserted into a corresponding through hole, a first end of the fiber is located inside the through hole, and a vertical distance between an end face of the first end of the fiber and a plane on which a connection end face of the ferrule body is located is a first preset distance, wherein the connection end face is an end face that is of the ferrule and that abuts another ferrule, and the first preset distance is a distance that can leave a gap between the fiber of the ferrule and a fiber of the another ferrule after the ferrule abuts the another ferrule; and   the through hole comprises a first section of through hole, a plane on which a top of the first section of through hole is located is the plane on which the connection end face is located, an area of any cross section of the first section of through hole in a direction vertical to an axial direction is greater than an area of the end face of the first end of the fiber, and a projection of the fiber in the axial direction does not coincide with a projection of the any cross section of the first section of through hole in the direction vertical to the axial direction.   
     
     
         9 . The fiber connector according to  claim 8 , wherein an antireflection coating is plated on an outer wall of the fiber located inside the first section of through hole. 
     
     
         10 . The fiber connector according to  claim 8 , wherein an antireflection coating is plated on a hole wall of the first section of through hole. 
     
     
         11 . The fiber connector according to  claim 8 , wherein an area of a cross section of the first section of through hole in the direction vertical to the axial direction gradually increases from a bottom to the top of the first section of through hole, the bottom of the first section of through hole is a top of a second section of through hole, and the second section of through hole is a through hole other than the first section of through hole in the through hole. 
     
     
         12 . The fiber connector according to  claim 8 , wherein a length of the first section of through hole is greater than or equal to the first preset distance. 
     
     
         13 . The fiber connector according to  claim 8 , wherein there is a chamfer at an orifice of the first section of through hole. 
     
     
         14 . The fiber connector according to  claim 8 , wherein the first preset distance is greater than 1.8 μm. 
     
     
         15 . An optical communications element, comprising an optical communications element body and at least one ferrule, wherein the ferrule is connected to the optical communications element body; wherein, each of the ferrule comprises a ferrule body and at least one fiber, wherein:
 at least one through hole is axially disposed inside the ferrule body, each fiber is inserted into a corresponding through hole, a first end of the fiber is located inside the through hole, and a vertical distance between an end face of the first end of the fiber and a plane on which a connection end face of the ferrule body is located is a first preset distance, wherein the connection end face is an end face that is of the ferrule and that abuts another ferrule, and the first preset distance is a distance that can leave a gap between the fiber of the ferrule and a fiber of the another ferrule after the ferrule abuts the another ferrule; and   the through hole comprises a first section of through hole, a plane on which a top of the first section of through hole is located is the plane on which the connection end face is located, an area of any cross section of the first section of through hole in a direction vertical to an axial direction is greater than an area of the end face of the first end of the fiber, and a projection of the fiber in the axial direction does not coincide with a projection of the any cross section of the first section of through hole in the direction vertical to the axial direction.   
     
     
         16 . The optical communications element according to  claim 15 , wherein an antireflection coating is plated on an outer wall of the fiber located inside the first section of through hole. 
     
     
         17 . The optical communications element according to  claim 15 , wherein an antireflection coating is plated on a hole wall of the first section of through hole. 
     
     
         18 . The optical communications element according to  claim 15 , wherein an area of a cross section of the first section of through hole in the direction vertical to the axial direction gradually increases from a bottom to the top of the first section of through hole, the bottom of the first section of through hole is a top of a second section of through hole, and the second section of through hole is a through hole other than the first section of through hole in the through hole. 
     
     
         19 . The optical communications element according to  claim 15 , wherein a length of the first section of through hole is greater than or equal to the first preset distance. 
     
     
         20 . The optical communications element according to  claim 15 , wherein there is a chamfer at an orifice of the first section of through hole. 
     
     
         21 . The optical communications element according to  claim 15 , wherein the first preset distance is greater than 1.8 μm.

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