Optic coupler, optical fiber laser device, and active optical module using the same

摘要

The inventive concept provides optic couplers, optical fiber laser devices, and active optical modules using the same. The optic coupler may include a first optical fiber having a first core and a first cladding surrounding the first core, a second optical fiber having a second core transmitting a signal light to the first optical fiber and a third cladding surrounding the second core, third optical fibers transmitting pump-light to the first optical fiber in a direction parallel to the second optical fiber; and a connector connected between the first optical fiber and the second optical fiber, the connector extending the third optical fibers disposed around the second optical fiber toward the first optical fiber, the connector comprising a third core connected between the first core and the second core and a fifth cladding surrounding the third core.

主权项

1. An optic coupler comprising:
a first optical fiber having a first core and a first cladding surrounding the first core; a second optical fiber transmitting a signal light to the first optical fiber, the second optical fiber being a few mode optical fiber having a second core and a third cladding surrounding the second core; third optical fibers providing a pump-light to the first optical fiber in a direction parallel to the second optical fiber, the third optical fibers includes a multi-mode optical fiber having a fourth core; and a connector disposed between the first optical fiber and the second optical fiber, the connector being connected with the third optical fibers, that are disposed around the second optical fiber, and toward the first optical fiber, the connector including a third core connected between the first core and the second core, and a fifth cladding surrounding the third core, the fifth cladding connected between the first cladding and the third optical fibers, the third core having a diameter equal to that of each of the first and second cores.