Fiber component and laser device

摘要

The fiber component of the present invention has a fusion splice section for connecting optical fibers. The optical fiber as the receiver of transmitted light is coated with at least two-layer resin. In the vicinity of the fusion splice section for connecting optical fibers, the innermost layer of a resin-coat section is uncovered with other resin coat at the boundary between the resin-coat section and resin-coat removed section of the optical fiber coated with two-layer resin. The structure effectively releases light and suppresses increase in temperature of the resin-coat section, protecting the optical fibers from burn-out.

主权项

1. A fiber component having a fusion splice section for connecting optical fibers, comprising:
a first optical fiber for transmitting light including a first core; a second optical fiber for receiving the light including:
a second core;a first inner resin coat for covering the second core, having a refractive index lower than refractive index of the second core; anda first outer resin coat for covering the first inner resin coat; and a fusion splice section for connecting the first optical fiber with the second optical fiber, wherein, in an area adjacent to the fusion splice section contains a resin-coat removed section in which the first outer resin coat and the first inner resin coat of the second optical fiber are removed, an area adjacent to the resin-coat removed section contains a boundary section in which the first outer resin coat of the second optical fiber is removed and the first inner resin coat is exposed to outside, and the first core has a cross-sectional area tapering toward the fusion splice section.