Fiber laser device
AssigneeHamamatsu Photonics K.K.
InventorsMasatoshi Sato, Hirotake Fukuoka
Life of this patent
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Abstract
A fiber laser device includes a first optical fiber, a second optical fiber, and a third optical fiber configured by polarization maintaining fibers. The first optical fiber includes at least one first part and at least two second parts alternatively disposed with the first part. The first part and the second part adjacent to each other are connected to each other such that a fast axis of the first part coincides with a slow axis of the second part at a connection point. A total length of the first part is equal to a total length of the second parts. A mode field diameter of the first optical fiber is smaller than each of a mode field diameter of the second optical fiber and a mode field diameter of the third optical fiber.
Claims13
A fiber laser device comprising:
- a first optical fiber configured by a polarization maintaining fiber;
- a second optical fiber configured by a polarization maintaining fiber and connected to one end of the first optical fiber;
- and
- a third optical fiber configured by a polarization maintaining fiber and connected to the other end of the first optical fiber, wherein
- the first optical fiber includes at least one first part and at least two second parts alternatively disposed with the first part,
- the first part and the second part adjacent to each other are connected to each other such that a fast axis of the first part coincides with a slow axis of the second part at a connection point,
- a total length of the first part is equal to a total length of the second parts, and
- a mode field diameter of the first optical fiber is smaller than each of a mode field diameter of the second optical fiber and a mode field diameter of the third optical fiber.
Dependencies are inferred from the claim text.