Patent ID: 11934005
Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
Field: Optics (Instruments)
Classification: CPC G  C | IPC C  G

Claim 3:
4. A method of manufacturing an optical connector, comprising:
preparing a multi-core optical fiber including a glass fiber and a resin coating that covers the glass fiber;
inserting into the ferrule the glass fiber exposed from the resin coating at one end of the multi-core optical fiber such that the glass fiber protrudes from an end surface of a ferrule by a length A mm;
rotating and aligning the multi-core optical fiber with respect to the ferrule;
fixing the multi-core optical fiber to the ferrule; and
polishing one end of the protruded glass fiber and the end surface of the ferrule so as to scrap off a tip end of the ferrule by a length B mm,
wherein a deviation angle in a circumferential direction between a first initial end surface of the one end of the prepared glass fiber and a cross section of the glass fiber separated from the first initial end surface by a length A+B mm is equal to or less than 0.9°, and
wherein the preparation includes:
preparing a first multi-core optical fiber having the deviation angle in the circumferential direction equal to or less than 0.9° between one end surface and a cross section separated by the length A+B mm from the one end surface; and
fusion-splicing a second multi-core optical fiber having the same core arrangement as the first multi-core optical fiber at the other end of the first multi-core optical fiber; and
setting the one end surface of the first multi-core optical fiber as the first initial end surface of the one end of the prepared glass fiber.