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US 10,241,261 B2Granted
Fiber structural body and light source device
AssigneeCanon Kabushiki Kaisha
InventorsHideo Iwase, Yukihiro Inoue
Life of this patent
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Abstract
A fiber structural body includes a first fiber, and a second fiber spliced to the first fiber such that light having propagated through the first fiber propagates through the second fiber. At least one of the fibers is a photonic crystal fiber. The second fiber is coated with a first coating layer and a second coating layer in order from a splice surface, and the first coating layer has a refractive index n1 larger than that of a clad layer of the second fiber. In the fiber structural body, L, r, n1, and NA satisfy a particular relationship.
Claims7
A fiber structural body comprising:
- a first fiber;
- a second fiber spliced to the first fiber such that light that has propagated through the first fiber propagates through the second fiber;
- a first coating layer;
- a second coating layer;
- and
- a heat sink,
- wherein one of the first fiber and the second fiber is a photonic crystal fiber and the other of the first fiber and the second fiber is an optical fiber,
- wherein a splice surface between the first fiber and the second fiber is coated with the first coating layer,
- wherein the second fiber is coated with the second coating layer, and
- wherein the heat sink is in contact with the first coating layer and has a thermal conductivity higher than a thermal conductivity of the first coating layer.
7 more elements
Dependencies are inferred from the claim text.