Patent ID: 8256969

Claim:
An optical fiber cord with an optical connector, wherein said optical fiber cord comprising: an optical fiber coated with buffer member; a tension member disposed around said optical fiber; and an outer jacket accommodating said optical fiber and said tension member therein; and wherein said optical connector comprising: a stop ring having a through hole formed therein having a crimping part at one end thereof, through which said optical fiber is disposed; a crimping ring being disposed around said optical fiber to crimp said stop ring and said optical fiber cord; a ferrule being disposed at the tip end part of said optical fiber in said optical fiber cord; a spring being disposed around said optical fiber and between said ferrule and said stop ring; a plug frame being engaged with said stop ring; and a grip being engaged with said plug frame; wherein said through hole of said stop ring having a stepwisely narrowing part in which a hole diameter is gradually reduced from said crimping part side to said ferrule side; wherein a hole diameter at said crimping part of said through hole is larger than a hole diameter at a ferrule end surface side of said through hole, and wherein an outer diameter of said optical fiber cord is at least about 3.5 mm.