Manufacturing device and manufacturing method of optical fiber grating
AssigneeFujikura Ltd.
InventorsKeiichiro Hata, Kenichi Ohmori
Life of this patent
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Abstract
A manufacturing device of an optical fiber grating to write a grating in a core of an optical fiber by irradiating the optical fiber with laser light includes: a fixing device that fixes the optical fiber to at least one of a first position located more on an upstream side and a second position located more on a downstream side in a conveyance direction of the optical fiber than a laser light irradiating position of the optical fiber in a case of writing the grating; and a feeder having a structure capable of linearly reciprocating in the conveyance direction and adapted to feed a predetermined length of the optical fiber in the conveyance direction in a case where a fixed state of the optical fiber by the fixing device is released.
Claims13
A manufacturing device of an optical fiber grating writing a grating in a core of an optical fiber by irradiating the optical fiber with laser light, the device comprising:
- a fixing device configured to fix the optical fiber to at least one of a first position located more on an upstream side and a second position located more on a downstream side in a conveyance direction of the optical fiber than a laser light irradiating position of the optical fiber in a case of writing the grating;
- a feeder configured to be capable of linearly reciprocating in the conveyance direction and configured to feed a predetermined length of the optical fiber in the conveyance direction in a case where a fixed state of the optical fiber by the fixing device is released, the feeder comprising:
- a fixed portion having a guide extending in the conveyance direction, and
- a movable portion capable of reciprocating along the guide;
- and
- a holder attached to a position right above the movable portion and configured to hold the optical fiber when the movable portion is moved in the conveyance direction.
A manufacturing method of an optical fiber grating, comprising:
- fixing an optical fiber to at least one of a first position located more on an upstream side and a second position located more on a downstream side in a conveyance direction of the optical fiber than a laser light irradiating position of the optical fiber in order to write a grating in a core of the optical fiber;
- irradiating the irradiating position with the laser light;
- releasing a fixed state of the optical fiber at the first position and the second position;
- feeding a predetermined length of the optical fiber in the conveyance direction by using a feeder having a structure capable of linearly reciprocating in the conveyance direction and comprising,
- a fixed portion having a guide extending in the conveyance direction,
- a movable portion capable of reciprocating along the guide, and
- a holder attached to a position right above the movable portion and configured to hold the optical fiber when the movable portion is moved in the conveyance direction;
- and
- holding the optical fiber when the movable portion is moved in the conveyance direction.
Dependencies are inferred from the claim text.