Optical fiber termination structure, optical connection component and hollow-core optical fiber
AssigneeHakusan Inc.
InventorsHideki KAMITSUNA, Ryo NAGASE
Life of this patent
Estimating the term…
Abstract
An optical fiber termination structure including: a hollow-core optical fiber that includes a hollow portion through which light is transmitted; a light transmissive member that covers the hollow portion; and an antireflection mechanism that prevents reflection of the light passing through the light transmissive member. An example of the antireflection mechanism is a plate glass with an antireflection coating applied to both faces thereof. The thickness of the plate glass is preferably 100 μm or less. The plate glass is bonded to the end of the hollow-core optical fiber by a jig. An optical connection component is a component in which two plate glasses face each other.
Claims20
An optical fiber termination structure comprising:
- a hollow-core optical fiber that includes a hollow portion through which light is transmitted;
- a light transmissive member that covers the hollow portion, the light transmissive member being a plate glass;
- and
- a dent to store the light transmissive member at an end face of a ferrule into which the hollow-core optical fiber is inserted, wherein
- the light transmissive member is bonded to a flat portion of the dent, and
- the light transmissive member consists of the plate glass which has an antireflection coating on both surfaces of the plate glass.
A method for manufacturing an optical fiber termination structure, comprising:
- an inserting step of inserting a hollow-core optical fiber into a ferrule including a through-hole;
- after the inserting step, a cleaving and retracting step of cleaving a tip of the hollow-core optical fiber and retracting the hollow-core optical fiber to an inside of the ferrule;
- a transferring step of transferring an adhesive to a protrusion portion of an adhesive transfer jig by bringing the adhesive transfer jig close to the adhesive applied on a plate, pressing the adhesive against the protrusion portion, and thereafter removing the adhesive transfer jig, the protrusion portion of the adhesive transfer jig being a circular ring smaller than a glass region of the hollow-core optical fiber;
- a retransferring step of sucking and holding a plate glass by a suction jig, and retransferring the adhesive that is transferred in the transferring step to the plate glass sucked and held by the suction jig;
- after the retransferring step, a plate glass inserting step of inserting the plate glass into the ferrule in which the hollow-core optical fiber after the cleaving and retracting step is stored, and bringing the hollow-core optical fiber into contact with the plate glass;
- and
- after the plate glass inserting step, a curing step of curing the adhesive.
Dependencies are inferred from the claim text.